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target.def (conditional_register_usage): Define. 

* target.def (conditional_register_usage): Define.
	* reginfo.c (init_reg_sets_1): Call
	targetm.conditional_register_usage.
	* system.h (CONDITIONAL_REGISTER_USAGE): Poison.
	* doc/tm.texi.in (CONDITIONAL_REGISTER_USAGE): Adjust language
	for making it a hook.
	* doc/tm.texi: Regenerate.
	* config/alpha/alpha.h (CONDITIONAL_REGISTER_USAGE): Move logic...
	* config/alpha/alpha.c (alpha_conditional_register_usage): ...here.
	New function.
	(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
	* config/arc/arc.h (CONDITIONAL_REGISTER_USAGE): Move logic...
	* config/arc/arc.c (arc_conditional_register_usage): ...here.
	New function.
	(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
	* config/arm/arm.h (CONDITIONAL_REGISTER_USAGE): Move logic...
	* config/arm/arm.c (arm_conditional_register_usage): ...here.
	New function.
	(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
	* config/bfin/bfin.h (CONDITIONAL_REGISTER_USAGE): Delete.
	* config/bfin/bfin-protos.h (conditional_register_usage): Delete.
	* config/bfin/bfin.c (conditional_register_usage): Move code into...
	(bfin_conditional_register_usage): ...here.  New function.
	(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
	* config/cris/cris.h (CONDITIONAL_REGISTER_USAGE): Delete.
	* config/cris/cris-protos.h (cris_conditional_register_usage): Delete.
	* config/cris/cris.c (cris_conditional_register_usage): Make static.
	(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
	* config/fr30/fr30.h (FIXED_REGISTERS): Adjust comment.
	* config/frv/frv.h (CONDITIONAL_REGISTER_USAGE): Delete.
	* config/frv/frv-protos.h (frv_conditional_register_usage): Delete.
	* config/frv/frv.c (frv_conditional_register_usage): Make static.
	(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
	* config/h8300/h8300.h (CONDITIONAL_REGISTER_USAGE): Move logic...
	* config/h8300/h8300.c (h8300_conditional_register_usage): ...here.
	New function.
	(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
	* config/i386/i386.h (CONDITIONAL_REGISTER_USAGE): Delete.
	* config/i386/i386-protos.h (ix86_conditional_register_usage): Delete.
	* config/i386/i386.c (ix86_conditional_register_usage): Make static.
	(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
	* config/m32c/m32c.h (CONDITIONAL_REGISTER_USAGE): Delete.
	* config/m32c/m32c-protos.h (m32c_conditional_register_usage): Delete.
	* config/m32c/m32c.c (m32c_conditional_register_usage): Make static.
	(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
	* config/m32r/m32r.h (CONDITIONAL_REGISTER_USAGE): Move logic...
	* config/m32r/m32r.c (m32r_conditional_register_usage): ...here.
	New function.
	(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
	* config/m68hc11/m68hc11.h (CONDITIONAL_REGISTER_USAGE): Delete.
	* config/m68hc11/m68hc11-protos.h (m68hc11_conditional_register_usage):
	Delete.
	* config/m68hc11/m68hc11.c (m68hc11_conditional_register_usage): Make
	static.
	(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
	* config/mep/mep.h (CONDITIONAL_REGISTER_USAGE): Delete.
	* config/mep/mep-protos.h (mep_conditional_register_usage): Delete.
	* config/mep/mep.c (mep_conditional_register_usage): Make static.
	(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
	* config/mips/mips.h (CONDITIONAL_REGISTER_USAGE): Delete.
	* config/mips/mips-protos.h (mips_conditional_register_usage): Delete.
	* config/mips/mips.c (mips_conditional_register_usage): Make static.
	(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
	* config/mmix/mmix.h (CONDITIONAL_REGISTER_USAGE): Delete.
	* config/mmix/mmix-protos.h (mmix_conditional_register_usage): Delete.
	* config/mmix/mmix.c (mmix_conditional_register_usage): Make static.
	(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
	* config/mn10300/mn10300.h (CONDITIONAL_REGISTER_USAGE): Move logic...
	* config/mn10300/mn10300.c (mn10300_conditional_register_usage):
	...here.  New function.
	(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
	* config/pa/pa32-regs.h (CONDITIONAL_REGISTER_USAGE): Move logic...
	* config/pa/pa64-regs.h (CONDITIONAL_REGISTER_USAGE): ...with this...
	* config/pa/pa.c (pa_conditional_register_usage): ...here.
	New function.
	(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
	* config/pdp11/pdp11.h (CONDITIONAL_REGISTER_USAGE): Move logic...
	* config/pdp11/pdp11.c (pdp11_conditional_register_usage): ...here.
	New function.
	(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
	* config/rs6000/rs6000.h (CONDITIONAL_REGISTER_USAGE): Delete.
	* config/rs6000/rs6000-protos.h (rs6000_conditional_register_usage):
	Delete.
	* config/rs6000/rs6000.c (rs6000_conditional_register_usage): Make
	static.
	(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
	* config/rx/rx.h (CONDITIONAL_REGISTER_USAGE): Delete.
	* config/rx/rx-protos.h (rx_conditional_register_usage): Delete.
	* config/rx/rx.c (rx_conditional_register_usage): Make static.
	(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
	* config/s390/s390.h (CONDITIONAL_REGISTER_USAGE): Delete.
	* config/s390/s390-protos.h (s390_conditional_register_usage): Delete.
	* config/s390/s390.c (s390_conditional_register_usage): Make static.
	(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
	* config/score/score.h (CONDITIONAL_REGISTER_USAGE): Move logic...
	* config/score/score.c (score_conditional_register_usage): ...here.
	New function.
	(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
	* config/sh/sh.h (CONDITIONAL_REGISTER_USAGE): Move logic...
	* config/sh/sh.c (sh_conditional_register_usage): ...here.
	New function.
	(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
	* config/sparc/sparc.h (CONDITIONAL_REGISTER_USAGE): Move logic...
	* config/sparc/sparc.c (sparc_conditional_register_usage): ...here.
	New function.
	(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
	* config/spu/spu.h (CONDITIONAL_REGISTER_USAGE): Delete.
	* config/spu/spu-protos.h (spu_conditional_register_usage): Delete.
	* config/spu/spu.c (spu_conditional_register_usage): Make static.
	(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
	* config/v850/v850.h (CONDITIONAL_REGISTER_USAGE): Move logic...
	* config/v850/v850.c (v850_conditional_register_usage): ...here.
	New function.
	(TARGET_CONDITIONAL_REGISTER_USAGE): Define.

From-SVN: r167020
This commit is contained in:
Nathan Froyd 2010-11-22 01:57:50 +00:00 committed by Nathan Froyd
parent 87921b81c0
commit 5efd84c503
73 changed files with 647 additions and 521 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

117
gcc/ChangeLog
View File

@ -1,3 +1,120 @@
2010-11-21 Nathan Froyd <froydnj@codesourcery.com>
* target.def (conditional_register_usage): Define.
* reginfo.c (init_reg_sets_1): Call
targetm.conditional_register_usage.
* system.h (CONDITIONAL_REGISTER_USAGE): Poison.
* doc/tm.texi.in (CONDITIONAL_REGISTER_USAGE): Adjust language
for making it a hook.
* doc/tm.texi: Regenerate.
* config/alpha/alpha.h (CONDITIONAL_REGISTER_USAGE): Move logic...
* config/alpha/alpha.c (alpha_conditional_register_usage): ...here.
New function.
(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
* config/arc/arc.h (CONDITIONAL_REGISTER_USAGE): Move logic...
* config/arc/arc.c (arc_conditional_register_usage): ...here.
New function.
(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
* config/arm/arm.h (CONDITIONAL_REGISTER_USAGE): Move logic...
* config/arm/arm.c (arm_conditional_register_usage): ...here.
New function.
(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
* config/bfin/bfin.h (CONDITIONAL_REGISTER_USAGE): Delete.
* config/bfin/bfin-protos.h (conditional_register_usage): Delete.
* config/bfin/bfin.c (conditional_register_usage): Move code into...
(bfin_conditional_register_usage): ...here. New function.
(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
* config/cris/cris.h (CONDITIONAL_REGISTER_USAGE): Delete.
* config/cris/cris-protos.h (cris_conditional_register_usage): Delete.
* config/cris/cris.c (cris_conditional_register_usage): Make static.
(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
* config/fr30/fr30.h (FIXED_REGISTERS): Adjust comment.
* config/frv/frv.h (CONDITIONAL_REGISTER_USAGE): Delete.
* config/frv/frv-protos.h (frv_conditional_register_usage): Delete.
* config/frv/frv.c (frv_conditional_register_usage): Make static.
(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
* config/h8300/h8300.h (CONDITIONAL_REGISTER_USAGE): Move logic...
* config/h8300/h8300.c (h8300_conditional_register_usage): ...here.
New function.
(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
* config/i386/i386.h (CONDITIONAL_REGISTER_USAGE): Delete.
* config/i386/i386-protos.h (ix86_conditional_register_usage): Delete.
* config/i386/i386.c (ix86_conditional_register_usage): Make static.
(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
* config/m32c/m32c.h (CONDITIONAL_REGISTER_USAGE): Delete.
* config/m32c/m32c-protos.h (m32c_conditional_register_usage): Delete.
* config/m32c/m32c.c (m32c_conditional_register_usage): Make static.
(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
* config/m32r/m32r.h (CONDITIONAL_REGISTER_USAGE): Move logic...
* config/m32r/m32r.c (m32r_conditional_register_usage): ...here.
New function.
(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
* config/m68hc11/m68hc11.h (CONDITIONAL_REGISTER_USAGE): Delete.
* config/m68hc11/m68hc11-protos.h (m68hc11_conditional_register_usage):
Delete.
* config/m68hc11/m68hc11.c (m68hc11_conditional_register_usage): Make
static.
(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
* config/mep/mep.h (CONDITIONAL_REGISTER_USAGE): Delete.
* config/mep/mep-protos.h (mep_conditional_register_usage): Delete.
* config/mep/mep.c (mep_conditional_register_usage): Make static.
(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
* config/mips/mips.h (CONDITIONAL_REGISTER_USAGE): Delete.
* config/mips/mips-protos.h (mips_conditional_register_usage): Delete.
* config/mips/mips.c (mips_conditional_register_usage): Make static.
(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
* config/mmix/mmix.h (CONDITIONAL_REGISTER_USAGE): Delete.
* config/mmix/mmix-protos.h (mmix_conditional_register_usage): Delete.
* config/mmix/mmix.c (mmix_conditional_register_usage): Make static.
(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
* config/mn10300/mn10300.h (CONDITIONAL_REGISTER_USAGE): Move logic...
* config/mn10300/mn10300.c (mn10300_conditional_register_usage):
...here. New function.
(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
* config/pa/pa32-regs.h (CONDITIONAL_REGISTER_USAGE): Move logic...
* config/pa/pa64-regs.h (CONDITIONAL_REGISTER_USAGE): ...with this...
* config/pa/pa.c (pa_conditional_register_usage): ...here.
New function.
(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
* config/pdp11/pdp11.h (CONDITIONAL_REGISTER_USAGE): Move logic...
* config/pdp11/pdp11.c (pdp11_conditional_register_usage): ...here.
New function.
(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
* config/rs6000/rs6000.h (CONDITIONAL_REGISTER_USAGE): Delete.
* config/rs6000/rs6000-protos.h (rs6000_conditional_register_usage):
Delete.
* config/rs6000/rs6000.c (rs6000_conditional_register_usage): Make
static.
(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
* config/rx/rx.h (CONDITIONAL_REGISTER_USAGE): Delete.
* config/rx/rx-protos.h (rx_conditional_register_usage): Delete.
* config/rx/rx.c (rx_conditional_register_usage): Make static.
(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
* config/s390/s390.h (CONDITIONAL_REGISTER_USAGE): Delete.
* config/s390/s390-protos.h (s390_conditional_register_usage): Delete.
* config/s390/s390.c (s390_conditional_register_usage): Make static.
(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
* config/score/score.h (CONDITIONAL_REGISTER_USAGE): Move logic...
* config/score/score.c (score_conditional_register_usage): ...here.
New function.
(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
* config/sh/sh.h (CONDITIONAL_REGISTER_USAGE): Move logic...
* config/sh/sh.c (sh_conditional_register_usage): ...here.
New function.
(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
* config/sparc/sparc.h (CONDITIONAL_REGISTER_USAGE): Move logic...
* config/sparc/sparc.c (sparc_conditional_register_usage): ...here.
New function.
(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
* config/spu/spu.h (CONDITIONAL_REGISTER_USAGE): Delete.
* config/spu/spu-protos.h (spu_conditional_register_usage): Delete.
* config/spu/spu.c (spu_conditional_register_usage): Make static.
(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
* config/v850/v850.h (CONDITIONAL_REGISTER_USAGE): Move logic...
* config/v850/v850.c (v850_conditional_register_usage): ...here.
New function.
(TARGET_CONDITIONAL_REGISTER_USAGE): Define.
2010-11-21 Jan Hubicka <jh@suse.cz>
Dominique d'Humieres <dominiq@lps.ens.ft>

14
gcc/config/alpha/alpha.c
View File

@ -10974,6 +10974,17 @@ alpha_init_libfuncs (void)
}
}
/* On the Alpha, we use this to disable the floating-point registers
when they don't exist. */
static void
alpha_conditional_register_usage (void)
{
int i;
if (! TARGET_FPREGS)
for (i = 32; i < 63; i++)
fixed_regs[i] = call_used_regs[i] = 1;
}
/* Initialize the GCC target structure. */
#if TARGET_ABI_OPEN_VMS
@ -11158,6 +11169,9 @@ alpha_init_libfuncs (void)
#undef TARGET_LEGITIMATE_ADDRESS_P
#define TARGET_LEGITIMATE_ADDRESS_P alpha_legitimate_address_p
#undef TARGET_CONDITIONAL_REGISTER_USAGE
#define TARGET_CONDITIONAL_REGISTER_USAGE alpha_conditional_register_usage
struct gcc_target targetm = TARGET_INITIALIZER;

13
gcc/config/alpha/alpha.h
View File

@ -204,19 +204,6 @@ extern enum alpha_fp_trap_mode alpha_fptm;
{"cpu", "%{!mcpu=*:-mcpu=%(VALUE)}" }, \
{"tune", "%{!mtune=*:-mtune=%(VALUE)}" }
/* Define this macro to change register usage conditional on target flags.
On the Alpha, we use this to disable the floating-point registers when
they don't exist. */
#define CONDITIONAL_REGISTER_USAGE \
{ \
int i; \
if (! TARGET_FPREGS) \
for (i = 32; i < 63; i++) \
fixed_regs[i] = call_used_regs[i] = 1; \
}
/* target machine storage layout */

17
gcc/config/arc/arc.c
View File

@ -101,6 +101,7 @@ static void arc_function_arg_advance (CUMULATIVE_ARGS *, enum machine_mode,
static unsigned int arc_function_arg_boundary (enum machine_mode, const_tree);
static void arc_trampoline_init (rtx, tree, rtx);
static void arc_option_override (void);
static void arc_conditional_register_usage (void);
/* ARC specific attributs. */
@ -171,6 +172,9 @@ static const struct attribute_spec arc_attribute_table[] =
#undef TARGET_TRAMPOLINE_INIT
#define TARGET_TRAMPOLINE_INIT arc_trampoline_init
#undef TARGET_CONDITIONAL_REGISTER_USAGE
#define TARGET_CONDITIONAL_REGISTER_USAGE arc_conditional_register_usage
struct gcc_target targetm = TARGET_INITIALIZER;
/* Implement TARGET_HANDLE_OPTION. */
@ -2473,3 +2477,16 @@ arc_trampoline_init (rtx m_tramp, tree fndecl, rtx chain_value)
emit_insn (gen_flush_icache (m_tramp));
}
/* Worker function for TARGET_CONDITIONAL_REGISTER_USAGE. */
static void
arc_conditional_register_usage (void)
{
if (PIC_OFFSET_TABLE_REGNUM != INVALID_REGNUM)
{
fixed_regs[PIC_OFFSET_TABLE_REGNUM] = 1;
call_used_regs[PIC_OFFSET_TABLE_REGNUM] = 1;
}
}

10
gcc/config/arc/arc.h
View File

@ -260,16 +260,6 @@ if (GET_MODE_CLASS (MODE) == MODE_INT \
48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, \
27, 28, 29, 30 }
/* Macro to conditionally modify fixed_regs/call_used_regs. */
#define CONDITIONAL_REGISTER_USAGE \
do { \
if (PIC_OFFSET_TABLE_REGNUM != INVALID_REGNUM) \
{ \
fixed_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \
call_used_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \
} \
} while (0)
/* Return number of consecutive hard regs needed starting at reg REGNO
to hold something of mode MODE.
This is ordinarily the length in words of a value of mode MODE

106
gcc/config/arm/arm.c
View File

@ -248,6 +248,7 @@ static bool arm_builtin_support_vector_misalignment (enum machine_mode mode,
const_tree type,
int misalignment,
bool is_packed);
static void arm_conditional_register_usage (void);
/* Table of machine attributes. */
@ -571,6 +572,9 @@ static const struct default_options arm_option_optimization_table[] =
#undef TARGET_CAN_ELIMINATE
#define TARGET_CAN_ELIMINATE arm_can_eliminate
#undef TARGET_CONDITIONAL_REGISTER_USAGE
#define TARGET_CONDITIONAL_REGISTER_USAGE arm_conditional_register_usage
#undef TARGET_CLASS_LIKELY_SPILLED_P
#define TARGET_CLASS_LIKELY_SPILLED_P arm_class_likely_spilled_p
@ -23276,4 +23280,106 @@ arm_builtin_support_vector_misalignment (enum machine_mode mode,
is_packed);
}
static void
arm_conditional_register_usage (void)
{
int regno;
if (TARGET_SOFT_FLOAT || TARGET_THUMB1 || !TARGET_FPA)
{
for (regno = FIRST_FPA_REGNUM;
regno <= LAST_FPA_REGNUM; ++regno)
fixed_regs[regno] = call_used_regs[regno] = 1;
}
if (TARGET_THUMB1 && optimize_size)
{
/* When optimizing for size on Thumb-1, it's better not
to use the HI regs, because of the overhead of
stacking them. */
for (regno = FIRST_HI_REGNUM;
regno <= LAST_HI_REGNUM; ++regno)
fixed_regs[regno] = call_used_regs[regno] = 1;
}
/* The link register can be clobbered by any branch insn,
but we have no way to track that at present, so mark
it as unavailable. */
if (TARGET_THUMB1)
fixed_regs[LR_REGNUM] = call_used_regs[LR_REGNUM] = 1;
if (TARGET_32BIT && TARGET_HARD_FLOAT)
{
if (TARGET_MAVERICK)
{
for (regno = FIRST_FPA_REGNUM;
regno <= LAST_FPA_REGNUM; ++ regno)
fixed_regs[regno] = call_used_regs[regno] = 1;
for (regno = FIRST_CIRRUS_FP_REGNUM;
regno <= LAST_CIRRUS_FP_REGNUM; ++ regno)
{
fixed_regs[regno] = 0;
call_used_regs[regno] = regno < FIRST_CIRRUS_FP_REGNUM + 4;
}
}
if (TARGET_VFP)
{
/* VFPv3 registers are disabled when earlier VFP
versions are selected due to the definition of
LAST_VFP_REGNUM. */
for (regno = FIRST_VFP_REGNUM;
regno <= LAST_VFP_REGNUM; ++ regno)
{
fixed_regs[regno] = 0;
call_used_regs[regno] = regno < FIRST_VFP_REGNUM + 16
|| regno >= FIRST_VFP_REGNUM + 32;
}
}
}
if (TARGET_REALLY_IWMMXT)
{
regno = FIRST_IWMMXT_GR_REGNUM;
/* The 2002/10/09 revision of the XScale ABI has wCG0
and wCG1 as call-preserved registers. The 2002/11/21
revision changed this so that all wCG registers are
scratch registers. */
for (regno = FIRST_IWMMXT_GR_REGNUM;
regno <= LAST_IWMMXT_GR_REGNUM; ++ regno)
fixed_regs[regno] = 0;
/* The XScale ABI has wR0 - wR9 as scratch registers,
the rest as call-preserved registers. */
for (regno = FIRST_IWMMXT_REGNUM;
regno <= LAST_IWMMXT_REGNUM; ++ regno)
{
fixed_regs[regno] = 0;
call_used_regs[regno] = regno < FIRST_IWMMXT_REGNUM + 10;
}
}
if ((unsigned) PIC_OFFSET_TABLE_REGNUM != INVALID_REGNUM)
{
fixed_regs[PIC_OFFSET_TABLE_REGNUM] = 1;
call_used_regs[PIC_OFFSET_TABLE_REGNUM] = 1;
}
else if (TARGET_APCS_STACK)
{
fixed_regs[10] = 1;
call_used_regs[10] = 1;
}
/* -mcaller-super-interworking reserves r11 for calls to
_interwork_r11_call_via_rN(). Making the register global
is an easy way of ensuring that it remains valid for all
calls. */
if (TARGET_APCS_FRAME || TARGET_CALLER_INTERWORKING
|| TARGET_TPCS_FRAME || TARGET_TPCS_LEAF_FRAME)
{
fixed_regs[ARM_HARD_FRAME_POINTER_REGNUM] = 1;
call_used_regs[ARM_HARD_FRAME_POINTER_REGNUM] = 1;
if (TARGET_CALLER_INTERWORKING)
global_regs[ARM_HARD_FRAME_POINTER_REGNUM] = 1;
}
SUBTARGET_CONDITIONAL_REGISTER_USAGE
}
#include "gt-arm.h"

103
gcc/config/arm/arm.h
View File

@ -698,7 +698,7 @@ extern int arm_structure_size_boundary;
elimination code won't get rid of sfp. It tracks
fp exactly at all times.
*: See CONDITIONAL_REGISTER_USAGE */
*: See TARGET_CONDITIONAL_REGISTER_USAGE */
/*
mvf0 Cirrus floating point result
@ -790,107 +790,6 @@ extern int arm_structure_size_boundary;
#define SUBTARGET_CONDITIONAL_REGISTER_USAGE
#endif
#define CONDITIONAL_REGISTER_USAGE \
{ \
int regno; \
\
if (TARGET_SOFT_FLOAT || TARGET_THUMB1 || !TARGET_FPA) \
{ \
for (regno = FIRST_FPA_REGNUM; \
regno <= LAST_FPA_REGNUM; ++regno) \
fixed_regs[regno] = call_used_regs[regno] = 1; \
} \
\
if (TARGET_THUMB1 && optimize_size) \
{ \
/* When optimizing for size on Thumb-1, it's better not \
to use the HI regs, because of the overhead of \
stacking them. */ \
for (regno = FIRST_HI_REGNUM; \
regno <= LAST_HI_REGNUM; ++regno) \
fixed_regs[regno] = call_used_regs[regno] = 1; \
} \
\
/* The link register can be clobbered by any branch insn, \
but we have no way to track that at present, so mark \
it as unavailable. */ \
if (TARGET_THUMB1) \
fixed_regs[LR_REGNUM] = call_used_regs[LR_REGNUM] = 1; \
\
if (TARGET_32BIT && TARGET_HARD_FLOAT) \
{ \
if (TARGET_MAVERICK) \
{ \
for (regno = FIRST_FPA_REGNUM; \
regno <= LAST_FPA_REGNUM; ++ regno) \
fixed_regs[regno] = call_used_regs[regno] = 1; \
for (regno = FIRST_CIRRUS_FP_REGNUM; \
regno <= LAST_CIRRUS_FP_REGNUM; ++ regno) \
{ \
fixed_regs[regno] = 0; \
call_used_regs[regno] = regno < FIRST_CIRRUS_FP_REGNUM + 4; \
} \
} \
if (TARGET_VFP) \
{ \
/* VFPv3 registers are disabled when earlier VFP \
versions are selected due to the definition of \
LAST_VFP_REGNUM. */ \
for (regno = FIRST_VFP_REGNUM; \
regno <= LAST_VFP_REGNUM; ++ regno) \
{ \
fixed_regs[regno] = 0; \
call_used_regs[regno] = regno < FIRST_VFP_REGNUM + 16 \
|| regno >= FIRST_VFP_REGNUM + 32; \
} \
} \
} \
\
if (TARGET_REALLY_IWMMXT) \
{ \
regno = FIRST_IWMMXT_GR_REGNUM; \
/* The 2002/10/09 revision of the XScale ABI has wCG0 \
and wCG1 as call-preserved registers. The 2002/11/21 \
revision changed this so that all wCG registers are \
scratch registers. */ \
for (regno = FIRST_IWMMXT_GR_REGNUM; \
regno <= LAST_IWMMXT_GR_REGNUM; ++ regno) \
fixed_regs[regno] = 0; \
/* The XScale ABI has wR0 - wR9 as scratch registers, \
the rest as call-preserved registers. */ \
for (regno = FIRST_IWMMXT_REGNUM; \
regno <= LAST_IWMMXT_REGNUM; ++ regno) \
{ \
fixed_regs[regno] = 0; \
call_used_regs[regno] = regno < FIRST_IWMMXT_REGNUM + 10; \
} \
} \
\
if ((unsigned) PIC_OFFSET_TABLE_REGNUM != INVALID_REGNUM) \
{ \
fixed_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \
call_used_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \
} \
else if (TARGET_APCS_STACK) \
{ \
fixed_regs[10] = 1; \
call_used_regs[10] = 1; \
} \
/* -mcaller-super-interworking reserves r11 for calls to \
_interwork_r11_call_via_rN(). Making the register global \
is an easy way of ensuring that it remains valid for all \
calls. */ \
if (TARGET_APCS_FRAME || TARGET_CALLER_INTERWORKING \
|| TARGET_TPCS_FRAME || TARGET_TPCS_LEAF_FRAME) \
{ \
fixed_regs[ARM_HARD_FRAME_POINTER_REGNUM] = 1; \
call_used_regs[ARM_HARD_FRAME_POINTER_REGNUM] = 1; \
if (TARGET_CALLER_INTERWORKING) \
global_regs[ARM_HARD_FRAME_POINTER_REGNUM] = 1; \
} \
SUBTARGET_CONDITIONAL_REGISTER_USAGE \
}
/* These are a couple of extensions to the formats accepted
by asm_fprintf:
%@ prints out ASM_COMMENT_START

1
gcc/config/bfin/bfin-protos.h
View File

@ -87,7 +87,6 @@ extern bool bfin_longcall_p (rtx, int);
extern bool bfin_dsp_memref_p (rtx);
extern bool bfin_expand_movmem (rtx, rtx, rtx, rtx);
extern void conditional_register_usage (void);
extern int bfin_register_move_cost (enum machine_mode, enum reg_class,
enum reg_class);
extern int bfin_memory_move_cost (enum machine_mode, enum reg_class, int in);

29
gcc/config/bfin/bfin.c
View File

@ -371,17 +371,6 @@ output_file_start (void)
max_arg_registers = i; /* how many arg reg used */
}
/* Called early in the compilation to conditionally modify
fixed_regs/call_used_regs. */
void
conditional_register_usage (void)
{
/* initialize condition code flag register rtx */
bfin_cc_rtx = gen_rtx_REG (BImode, REG_CC);
bfin_rets_rtx = gen_rtx_REG (Pmode, REG_RETS);
}
/* Examine machine-dependent attributes of function type FUNTYPE and return its
type. See the definition of E_FUNKIND. */
@ -6589,6 +6578,21 @@ bfin_expand_builtin (tree exp, rtx target ATTRIBUTE_UNUSED,
gcc_unreachable ();
}
static void
bfin_conditional_register_usage (void)
{
/* initialize condition code flag register rtx */
bfin_cc_rtx = gen_rtx_REG (BImode, REG_CC);
bfin_rets_rtx = gen_rtx_REG (Pmode, REG_RETS);
if (TARGET_FDPIC)
call_used_regs[FDPIC_REGNO] = 1;
if (!TARGET_FDPIC && flag_pic)
{
fixed_regs[PIC_OFFSET_TABLE_REGNUM] = 1;
call_used_regs[PIC_OFFSET_TABLE_REGNUM] = 1;
}
}
#undef TARGET_INIT_BUILTINS
#define TARGET_INIT_BUILTINS bfin_init_builtins
@ -6691,6 +6695,9 @@ bfin_expand_builtin (tree exp, rtx target ATTRIBUTE_UNUSED,
#undef TARGET_CAN_ELIMINATE
#define TARGET_CAN_ELIMINATE bfin_can_eliminate
#undef TARGET_CONDITIONAL_REGISTER_USAGE
#define TARGET_CONDITIONAL_REGISTER_USAGE bfin_conditional_register_usage
#undef TARGET_ASM_TRAMPOLINE_TEMPLATE
#define TARGET_ASM_TRAMPOLINE_TEMPLATE bfin_asm_trampoline_template
#undef TARGET_TRAMPOLINE_INIT

13
gcc/config/bfin/bfin.h
View File

@ -498,19 +498,6 @@ extern const char *bfin_library_id_string;
REG_LT0, REG_LT1, REG_LC0, REG_LC1, REG_LB0, REG_LB1 \
}
/* Macro to conditionally modify fixed_regs/call_used_regs. */
#define CONDITIONAL_REGISTER_USAGE \
{ \
conditional_register_usage(); \
if (TARGET_FDPIC) \
call_used_regs[FDPIC_REGNO] = 1; \
if (!TARGET_FDPIC && flag_pic) \
{ \
fixed_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \
call_used_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \
} \
}
/* Define the classes of registers for register constraints in the
machine description. Also define ranges of constants.

1
gcc/config/cris/cris-protos.h
View File

@ -25,7 +25,6 @@ along with GCC; see the file COPYING3. If not see
#define STDIO_INCLUDED
#endif
extern void cris_conditional_register_usage (void);
extern bool cris_simple_epilogue (void);
#ifdef RTX_CODE
extern const char *cris_op_str (rtx);

9
gcc/config/cris/cris.c
View File

@ -113,6 +113,8 @@ static void cris_print_operand_address (FILE *, rtx);
static bool cris_print_operand_punct_valid_p (unsigned char code);
static void cris_conditional_register_usage (void);
static void cris_asm_output_mi_thunk
(FILE *, tree, HOST_WIDE_INT, HOST_WIDE_INT, tree);
@ -187,6 +189,9 @@ static const struct default_options cris_option_optimization_table[] =
#undef TARGET_PRINT_OPERAND_PUNCT_VALID_P
#define TARGET_PRINT_OPERAND_PUNCT_VALID_P cris_print_operand_punct_valid_p
#undef TARGET_CONDITIONAL_REGISTER_USAGE
#define TARGET_CONDITIONAL_REGISTER_USAGE cris_conditional_register_usage
#undef TARGET_ASM_OUTPUT_MI_THUNK
#define TARGET_ASM_OUTPUT_MI_THUNK cris_asm_output_mi_thunk
#undef TARGET_ASM_CAN_OUTPUT_MI_THUNK
@ -445,9 +450,9 @@ cris_store_multiple_op_p (rtx op)
return true;
}
/* The CONDITIONAL_REGISTER_USAGE worker. */
/* The TARGET_CONDITIONAL_REGISTER_USAGE worker. */
void
static void
cris_conditional_register_usage (void)
{
/* FIXME: This isn't nice. We should be able to use that register for

3
gcc/config/cris/cris.h
View File

@ -431,9 +431,6 @@ extern int cris_cpu_version;
#define CALL_USED_REGISTERS \
{0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1}
#define CONDITIONAL_REGISTER_USAGE cris_conditional_register_usage ()
/* Node: Allocation Order */
/* We need this on CRIS, because call-used regs should be used first,

5
gcc/config/fr30/fr30.h
View File

@ -180,8 +180,9 @@ along with GCC; see the file COPYING3. If not see
The table initialized from this macro, and the table initialized by the
following one, may be overridden at run time either automatically, by the
actions of the macro `CONDITIONAL_REGISTER_USAGE', or by the user with the
command options `-ffixed-REG', `-fcall-used-REG' and `-fcall-saved-REG'. */
actions of the macro `TARGET_CONDITIONAL_REGISTER_USAGE', or by the user
with the command options `-ffixed-REG', `-fcall-used-REG' and
`-fcall-saved-REG'. */
#define FIXED_REGISTERS \
{ 1, 0, 0, 0, 0, 0, 0, 0, /* 0 - 7 */ \
0, 0, 0, 0, 0, 0, 0, 1, /* 8 - 15 */ \

1
gcc/config/frv/frv-protos.h
View File

@ -38,7 +38,6 @@ extern frv_cpu_t frv_cpu_type; /* value of -mcpu= */
/* Define functions defined in frv.c */
extern void frv_expand_prologue (void);
extern void frv_expand_epilogue (bool);
extern void frv_conditional_register_usage (void);
extern frv_stack_t *frv_stack_info (void);
extern void frv_debug_stack (frv_stack_t *);
extern int frv_initial_elimination_offset (int, int);

6
gcc/config/frv/frv.c
View File

@ -405,6 +405,7 @@ static reg_class_t frv_secondary_reload (bool, rtx, reg_class_t,
secondary_reload_info *);
static bool frv_frame_pointer_required (void);
static bool frv_can_eliminate (const int, const int);
static void frv_conditional_register_usage (void);
static void frv_trampoline_init (rtx, tree, rtx);
static bool frv_class_likely_spilled_p (reg_class_t);
@ -535,6 +536,9 @@ static const struct default_options frv_option_optimization_table[] =
#undef TARGET_CAN_ELIMINATE
#define TARGET_CAN_ELIMINATE frv_can_eliminate
#undef TARGET_CONDITIONAL_REGISTER_USAGE
#define TARGET_CONDITIONAL_REGISTER_USAGE frv_conditional_register_usage
#undef TARGET_TRAMPOLINE_INIT
#define TARGET_TRAMPOLINE_INIT frv_trampoline_init
@ -903,7 +907,7 @@ frv_string_begins_with (const_tree name, const char *prefix)
switches, then GCC will automatically avoid using these registers when the
target switches are opposed to them.) */
void
static void
frv_conditional_register_usage (void)
{
int i;

22
gcc/config/frv/frv.h
View File

@ -784,28 +784,6 @@
1, 1 /* 171-172, iacc0 */ \
}
/* Zero or more C statements that may conditionally modify two variables
`fixed_regs' and `call_used_regs' (both of type `char []') after they have
been initialized from the two preceding macros.
This is necessary in case the fixed or call-clobbered registers depend on
target flags.
You need not define this macro if it has no work to do.
If the usage of an entire class of registers depends on the target flags,
you may indicate this to GCC by using this macro to modify `fixed_regs' and
`call_used_regs' to 1 for each of the registers in the classes which should
not be used by GCC. Also define the macro `REG_CLASS_FROM_LETTER' to return
`NO_REGS' if it is called with a letter for a class that shouldn't be used.
(However, if this class is not included in `GENERAL_REGS' and all of the
insn patterns whose constraints permit this class are controlled by target
switches, then GCC will automatically avoid using these registers when the
target switches are opposed to them.) */
#define CONDITIONAL_REGISTER_USAGE frv_conditional_register_usage ()
/* Order of allocation of registers. */

12
gcc/config/h8300/h8300.c
View File

@ -1919,6 +1919,15 @@ h8300_can_eliminate (const int from ATTRIBUTE_UNUSED, const int to)
return (to == STACK_POINTER_REGNUM ? ! frame_pointer_needed : true);
}
/* Conditionally modify register usage based on target flags. */
static void
h8300_conditional_register_usage (void)
{
if (!TARGET_MAC)
fixed_regs[MAC_REG] = call_used_regs[MAC_REG] = 1;
}
/* Function for INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET).
Define the offset between two registers, one to be eliminated, and
the other its replacement, at the start of a routine. */
@ -5954,6 +5963,9 @@ h8300_trampoline_init (rtx m_tramp, tree fndecl, rtx cxt)
#undef TARGET_CAN_ELIMINATE
#define TARGET_CAN_ELIMINATE h8300_can_eliminate
#undef TARGET_CONDITIONAL_REGISTER_USAGE
#define TARGET_CONDITIONAL_REGISTER_USAGE h8300_conditional_register_usage
#undef TARGET_TRAMPOLINE_INIT
#define TARGET_TRAMPOLINE_INIT h8300_trampoline_init

6
gcc/config/h8300/h8300.h
View File

@ -244,12 +244,6 @@ extern const char * const *h8_reg_names;
/* r0 r1 r2 r3 r4 r5 r6 r7 mac ap rap fp */ \
{ 2, 3, 0, 1, 4, 5, 6, 8, 7, 9, 10, 11 }
#define CONDITIONAL_REGISTER_USAGE \
{ \
if (!TARGET_MAC) \
fixed_regs[MAC_REG] = call_used_regs[MAC_REG] = 1; \
}
#define HARD_REGNO_NREGS(REGNO, MODE) \
h8300_hard_regno_nregs ((REGNO), (MODE))

2
gcc/config/i386/i386-protos.h
View File

@ -20,8 +20,6 @@ along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
/* Functions in i386.c */
extern void ix86_conditional_register_usage (void);
extern bool ix86_target_stack_probe (void);
extern bool ix86_can_use_return_insn_p (void);
extern void ix86_setup_frame_addresses (void);

9
gcc/config/i386/i386.c
View File

@ -4114,7 +4114,7 @@ ix86_option_override (void)
/* Update register usage after having seen the compiler flags. */
void
static void
ix86_conditional_register_usage (void)
{
int i;
@ -5619,8 +5619,8 @@ ix86_asm_output_function_label (FILE *asm_out_file, const char *fname,
extern void init_regs (void);
/* Implementation of call abi switching target hook. Specific to FNDECL
the specific call register sets are set. See also CONDITIONAL_REGISTER_USAGE
for more details. */
the specific call register sets are set. See also
ix86_conditional_register_usage for more details. */
void
ix86_call_abi_override (const_tree fndecl)
{
@ -34706,6 +34706,9 @@ ix86_autovectorize_vector_sizes (void)
#undef TARGET_ASM_CODE_END
#define TARGET_ASM_CODE_END ix86_code_end
#undef TARGET_CONDITIONAL_REGISTER_USAGE
#define TARGET_CONDITIONAL_REGISTER_USAGE ix86_conditional_register_usage
struct gcc_target targetm = TARGET_INITIALIZER;
#include "gt-i386.h"

10
gcc/config/i386/i386.h
View File

@ -899,7 +899,7 @@ enum target_cpu_default
64 bit targets, one if the register if fixed on both 32 and 64
bit targets, two if it is only fixed on 32bit targets and three
if its only fixed on 64bit targets.
Proper values are computed in the CONDITIONAL_REGISTER_USAGE.
Proper values are computed in TARGET_CONDITIONAL_REGISTER_USAGE.
*/
#define FIXED_REGISTERS \
/*ax,dx,cx,bx,si,di,bp,sp,st,st1,st2,st3,st4,st5,st6,st7*/ \
@ -927,7 +927,7 @@ enum target_cpu_default
64 bit targets, one if the register if call used on both 32 and 64
bit targets, two if it is only call used on 32bit targets and three
if its only call used on 64bit targets.
Proper values are computed in the CONDITIONAL_REGISTER_USAGE.
Proper values are computed in TARGET_CONDITIONAL_REGISTER_USAGE.
*/
#define CALL_USED_REGISTERS \
/*ax,dx,cx,bx,si,di,bp,sp,st,st1,st2,st3,st4,st5,st6,st7*/ \
@ -967,9 +967,6 @@ enum target_cpu_default
#define OVERRIDE_ABI_FORMAT(FNDECL) ix86_call_abi_override (FNDECL)
/* Macro to conditionally modify fixed_regs/call_used_regs. */
#define CONDITIONAL_REGISTER_USAGE ix86_conditional_register_usage ()
/* Return number of consecutive hard regs needed starting at reg REGNO
to hold something of mode MODE.
This is ordinarily the length in words of a value of mode MODE
@ -1251,7 +1248,8 @@ enum reg_class
for a vector of HARD_REG_SET of length N_REG_CLASSES.
Note that the default setting of CLOBBERED_REGS is for 32-bit; this
is adjusted by CONDITIONAL_REGISTER_USAGE for the 64-bit ABI in effect. */
is adjusted by TARGET_CONDITIONAL_REGISTER_USAGE for the 64-bit ABI
in effect. */
#define REG_CLASS_CONTENTS \
{ { 0x00, 0x0 }, \

1
gcc/config/m32c/m32c-protos.h
View File

@ -22,7 +22,6 @@
#define MM enum machine_mode
#define UINT unsigned int
void m32c_conditional_register_usage (void);
int m32c_const_ok_for_constraint_p (HOST_WIDE_INT, char, const char *);
UINT m32c_dwarf_frame_regnum (int);
int m32c_eh_return_data_regno (int);

9
gcc/config/m32c/m32c.c
View File

@ -88,6 +88,7 @@ static rtx m32c_subreg (enum machine_mode, rtx, enum machine_mode, int);
static int need_to_save (int);
static rtx m32c_function_value (const_tree, const_tree, bool);
static rtx m32c_libcall_value (enum machine_mode, const_rtx);
static void m32c_conditional_register_usage (void);
/* Returns true if an address is specified, else false. */
static bool m32c_get_pragma_address (const char *varname, unsigned *addr);
@ -523,11 +524,13 @@ static struct
{ 1, 1, 0, 0, 0 }, /* mem7 */
};
/* Implements CONDITIONAL_REGISTER_USAGE. We adjust the number of
available memregs, and select which registers need to be preserved
/* Implements TARGET_CONDITIONAL_REGISTER_USAGE. We adjust the number
of available memregs, and select which registers need to be preserved
across calls based on the chip family. */
void
#undef TARGET_CONDITIONAL_REGISTER_USAGE
#define TARGET_CONDITIONAL_REGISTER_USAGE m32c_conditional_register_usage
static void
m32c_conditional_register_usage (void)
{
int i;

2
gcc/config/m32c/m32c.h
View File

@ -228,8 +228,6 @@ machine_function;
1, 1, 1, 1, \
1, 1, 1, 1, 1, 1, 1, 1 }
#define CONDITIONAL_REGISTER_USAGE m32c_conditional_register_usage ();
/* The *_REGNO theme matches m32c.md and most register number
arguments; the PC_REGNUM is the odd one out. */
#ifndef PC_REGNO

14
gcc/config/m32r/m32r.c
View File

@ -101,6 +101,7 @@ static rtx m32r_function_arg (CUMULATIVE_ARGS *, enum machine_mode,
static void m32r_function_arg_advance (CUMULATIVE_ARGS *, enum machine_mode,
const_tree, bool);
static bool m32r_can_eliminate (const int, const int);
static void m32r_conditional_register_usage (void);
static void m32r_trampoline_init (rtx, tree, rtx);
/* M32R specific attributes. */
@ -204,6 +205,9 @@ static const struct default_options m32r_option_optimization_table[] =
#undef TARGET_CAN_ELIMINATE
#define TARGET_CAN_ELIMINATE m32r_can_eliminate
#undef TARGET_CONDITIONAL_REGISTER_USAGE
#define TARGET_CONDITIONAL_REGISTER_USAGE m32r_conditional_register_usage
#undef TARGET_TRAMPOLINE_INIT
#define TARGET_TRAMPOLINE_INIT m32r_trampoline_init
@ -2837,3 +2841,13 @@ m32r_trampoline_init (rtx m_tramp, tree fndecl, rtx chain_value)
gen_int_mode (TRAMPOLINE_SIZE, SImode), SImode,
GEN_INT (3), SImode);
}
static void
m32r_conditional_register_usage (void)
{
if (flag_pic)
{
fixed_regs[PIC_OFFSET_TABLE_REGNUM] = 1;
call_used_regs[PIC_OFFSET_TABLE_REGNUM] = 1;
}
}

24
gcc/config/m32r/m32r.h
View File

@ -456,30 +456,6 @@ extern enum m32r_sdata m32r_sdata;
#define CALL_REALLY_USED_REGISTERS CALL_USED_REGISTERS
/* Zero or more C statements that may conditionally modify two variables
`fixed_regs' and `call_used_regs' (both of type `char []') after they
have been initialized from the two preceding macros.
This is necessary in case the fixed or call-clobbered registers depend
on target flags.
You need not define this macro if it has no work to do. */
#ifdef SUBTARGET_CONDITIONAL_REGISTER_USAGE
#define CONDITIONAL_REGISTER_USAGE SUBTARGET_CONDITIONAL_REGISTER_USAGE
#else
#define CONDITIONAL_REGISTER_USAGE \
do \
{ \
if (flag_pic) \
{ \
fixed_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \
call_used_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \
} \
} \
while (0)
#endif
/* If defined, an initializer for a vector of integers, containing the
numbers of hard registers in the order in which GCC should
prefer to use them (from most preferred to least). */

1
gcc/config/m68hc11/m68hc11-protos.h
View File

@ -20,7 +20,6 @@ along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
extern void m68hc11_conditional_register_usage (void);
extern int hard_regno_mode_ok (int, enum machine_mode);
extern int m68hc11_hard_regno_rename_ok (int, int);

9
gcc/config/m68hc11/m68hc11.c
View File

@ -96,6 +96,7 @@ static void m68hc11_init_libfuncs (void);
static rtx m68hc11_struct_value_rtx (tree, int);
static bool m68hc11_return_in_memory (const_tree, const_tree);
static bool m68hc11_can_eliminate (const int, const int);
static void m68hc11_conditional_register_usage (void);
static void m68hc11_trampoline_init (rtx, tree, rtx);
static rtx m68hc11_function_arg (CUMULATIVE_ARGS*, enum machine_mode,
@ -302,6 +303,9 @@ static const struct attribute_spec m68hc11_attribute_table[] =
#undef TARGET_CAN_ELIMINATE
#define TARGET_CAN_ELIMINATE m68hc11_can_eliminate
#undef TARGET_CONDITIONAL_REGISTER_USAGE
#define TARGET_CONDITIONAL_REGISTER_USAGE m68hc11_conditional_register_usage
#undef TARGET_CLASS_LIKELY_SPILLED_P
#define TARGET_CLASS_LIKELY_SPILLED_P m68hc11_class_likely_spilled_p
@ -382,7 +386,10 @@ m68hc11_option_override (void)
}
void
/* The soft-registers are disabled or enabled according to the
-msoft-reg-count=<n> option. */
static void
m68hc11_conditional_register_usage (void)
{
int i;

8
gcc/config/m68hc11/m68hc11.h
View File

@ -372,14 +372,6 @@ SOFT_REG_FIRST+28, SOFT_REG_FIRST+29,SOFT_REG_FIRST+30,SOFT_REG_FIRST+31
/* X, D, Y, SP,PC,A, B, CCR, Z, FP, ZTMP,ZR,XYR, D1 - 32, SOFT-FP, AP */
/* Define this macro to change register usage conditional on target flags.
The soft-registers are disabled or enabled according to the
-msoft-reg-count=<n> option. */
#define CONDITIONAL_REGISTER_USAGE (m68hc11_conditional_register_usage ())
/* List the order in which to allocate registers. Each register must be
listed once, even those in FIXED_REGISTERS. */
#define REG_ALLOC_ORDER \

25
gcc/config/m68k/m68k.c
View File

@ -133,6 +133,7 @@ static void m68k_sched_dfa_post_advance_cycle (void);
static int m68k_sched_first_cycle_multipass_dfa_lookahead (void);
static bool m68k_can_eliminate (const int, const int);
static void m68k_conditional_register_usage (void);
static bool m68k_legitimate_address_p (enum machine_mode, rtx, bool);
static bool m68k_handle_option (size_t, const char *, int);
static void m68k_option_override (void);
@ -278,6 +279,9 @@ const char *m68k_library_id_string = "_current_shared_library_a5_offset_";
#undef TARGET_CAN_ELIMINATE
#define TARGET_CAN_ELIMINATE m68k_can_eliminate
#undef TARGET_CONDITIONAL_REGISTER_USAGE
#define TARGET_CONDITIONAL_REGISTER_USAGE m68k_conditional_register_usage
#undef TARGET_TRAMPOLINE_INIT
#define TARGET_TRAMPOLINE_INIT m68k_trampoline_init
@ -6568,4 +6572,25 @@ m68k_return_pops_args (tree fundecl, tree funtype, int size)
? size : 0);
}
/* Make sure everything's fine if we *don't* have a given processor.
This assumes that putting a register in fixed_regs will keep the
compiler's mitts completely off it. We don't bother to zero it out
of register classes. */
static void
m68k_conditional_register_usage (void)
{
int i;
HARD_REG_SET x;
if (!TARGET_HARD_FLOAT)
{
COPY_HARD_REG_SET (x, reg_class_contents[(int)FP_REGS]);
for (i = 0; i < FIRST_PSEUDO_REGISTER; i++)
if (TEST_HARD_REG_BIT (x, i))
fixed_regs[i] = call_used_regs[i] = 1;
}
if (flag_pic)
fixed_regs[PIC_REG] = call_used_regs[PIC_REG] = 1;
}
#include "gt-m68k.h"

19
gcc/config/m68k/m68k.h
View File

@ -398,25 +398,6 @@ along with GCC; see the file COPYING3. If not see
}
/* Make sure everything's fine if we *don't* have a given processor.
This assumes that putting a register in fixed_regs will keep the
compiler's mitts completely off it. We don't bother to zero it out
of register classes. */
#define CONDITIONAL_REGISTER_USAGE \
{ \
int i; \
HARD_REG_SET x; \
if (!TARGET_HARD_FLOAT) \
{ \
COPY_HARD_REG_SET (x, reg_class_contents[(int)FP_REGS]); \
for (i = 0; i < FIRST_PSEUDO_REGISTER; i++) \
if (TEST_HARD_REG_BIT (x, i)) \
fixed_regs[i] = call_used_regs[i] = 1; \
} \
if (flag_pic) \
fixed_regs[PIC_REG] = call_used_regs[PIC_REG] = 1; \
}
/* On the m68k, ordinary registers hold 32 bits worth;
for the 68881 registers, a single register is always enough for
anything that can be stored in them at all. */

1
gcc/config/mep/mep-protos.h
View File

@ -19,7 +19,6 @@ You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
extern void mep_conditional_register_usage (void);
extern int mep_regno_reg_class (int);
extern int mep_reg_class_from_constraint (int, const char *);
extern bool mep_const_ok_for_letter_p (HOST_WIDE_INT, int);

5
gcc/config/mep/mep.c
View File

@ -231,6 +231,7 @@ static tree mep_build_builtin_va_list (void);
static void mep_expand_va_start (tree, rtx);
static tree mep_gimplify_va_arg_expr (tree, tree, gimple_seq *, gimple_seq *);
static bool mep_can_eliminate (const int, const int);
static void mep_conditional_register_usage (void);
static void mep_trampoline_init (rtx, tree, rtx);
#define WANT_GCC_DEFINITIONS
@ -278,7 +279,7 @@ mep_set_leaf_registers (int enable)
mep_leaf_registers[i] = enable;
}
void
static void
mep_conditional_register_usage (void)
{
int i;
@ -7454,6 +7455,8 @@ mep_asm_init_sections (void)
#define TARGET_GIMPLIFY_VA_ARG_EXPR mep_gimplify_va_arg_expr
#undef TARGET_CAN_ELIMINATE
#define TARGET_CAN_ELIMINATE mep_can_eliminate
#undef TARGET_CONDITIONAL_REGISTER_USAGE
#define TARGET_CONDITIONAL_REGISTER_USAGE mep_conditional_register_usage
#undef TARGET_TRAMPOLINE_INIT
#define TARGET_TRAMPOLINE_INIT mep_trampoline_init

3
gcc/config/mep/mep.h
View File

@ -256,9 +256,6 @@ crtbegin.o%s"
1, CALL_USED_SHADOW_REGISTERS \
}
#define CONDITIONAL_REGISTER_USAGE \
mep_conditional_register_usage ();
#define REG_ALLOC_ORDER { \
/* core registers */ \
3, 2, 1, 0, 9, 10, 11, 12, 4, 5, 6, 7, 8, 13, 14, 15, \

1
gcc/config/mips/mips-protos.h
View File

@ -248,7 +248,6 @@ extern bool mips_expand_ext_as_unaligned_load (rtx, rtx, HOST_WIDE_INT,
extern bool mips_expand_ins_as_unaligned_store (rtx, rtx, HOST_WIDE_INT,
HOST_WIDE_INT);
extern bool mips_mem_fits_mode_p (enum machine_mode mode, rtx x);
extern void mips_conditional_register_usage (void);
extern void mips_order_regs_for_local_alloc (void);
extern HOST_WIDE_INT mips_debugger_offset (rtx, HOST_WIDE_INT);

7
gcc/config/mips/mips.c
View File

@ -15926,9 +15926,9 @@ mips_swap_registers (unsigned int i)
#undef SWAP_INT
}
/* Implement CONDITIONAL_REGISTER_USAGE. */
/* Implement TARGET_CONDITIONAL_REGISTER_USAGE. */
void
static void
mips_conditional_register_usage (void)
{
@ -16615,6 +16615,9 @@ mips_shift_truncation_mask (enum machine_mode mode)
#undef TARGET_CAN_ELIMINATE
#define TARGET_CAN_ELIMINATE mips_can_eliminate
#undef TARGET_CONDITIONAL_REGISTER_USAGE
#define TARGET_CONDITIONAL_REGISTER_USAGE mips_conditional_register_usage
#undef TARGET_TRAMPOLINE_INIT
#define TARGET_TRAMPOLINE_INIT mips_trampoline_init

6
gcc/config/mips/mips.h
View File

@ -1085,8 +1085,6 @@ enum mips_code_readable_setting {
/* The CACHE instruction is available. */
#define ISA_HAS_CACHE (TARGET_CACHE_BUILTIN && !TARGET_MIPS16)
#define CONDITIONAL_REGISTER_USAGE mips_conditional_register_usage ()
/* Tell collect what flags to pass to nm. */
#ifndef NM_FLAGS
#define NM_FLAGS "-Bn"
@ -1518,8 +1516,8 @@ enum mips_code_readable_setting {
Regarding coprocessor registers: without evidence to the contrary,
it's best to assume that each coprocessor register has a unique
use. This can be overridden, in, e.g., mips_option_override or
CONDITIONAL_REGISTER_USAGE should the assumption be inappropriate
for a particular target. */
TARGET_CONDITIONAL_REGISTER_USAGE should the assumption be
inappropriate for a particular target. */
#define FIXED_REGISTERS \
{ \

1
gcc/config/mmix/mmix-protos.h
View File

@ -45,7 +45,6 @@ extern void mmix_asm_output_skip (FILE *, int);
extern void mmix_asm_output_align (FILE *, int);
extern int mmix_shiftable_wyde_value (unsigned HOST_WIDEST_INT);
extern void mmix_output_register_setting (FILE *, int, HOST_WIDEST_INT, int);
extern void mmix_conditional_register_usage (void);
extern int mmix_opposite_regno (int, int);
extern int mmix_local_regno (int);
extern unsigned mmix_dbx_register_number (unsigned);

8
gcc/config/mmix/mmix.c
View File

@ -159,6 +159,7 @@ static bool mmix_pass_by_reference (CUMULATIVE_ARGS *,
static bool mmix_frame_pointer_required (void);
static void mmix_asm_trampoline_template (FILE *);
static void mmix_trampoline_init (rtx, tree, rtx);
static void mmix_conditional_register_usage (void);
/* TARGET_OPTION_OPTIMIZATION_TABLE. */
@ -212,6 +213,9 @@ static const struct default_options mmix_option_optimization_table[] =
#undef TARGET_ASM_OUTPUT_SOURCE_FILENAME
#define TARGET_ASM_OUTPUT_SOURCE_FILENAME mmix_asm_output_source_filename
#undef TARGET_CONDITIONAL_REGISTER_USAGE
#define TARGET_CONDITIONAL_REGISTER_USAGE mmix_conditional_register_usage
#undef TARGET_RTX_COSTS
#define TARGET_RTX_COSTS mmix_rtx_costs
#undef TARGET_ADDRESS_COST
@ -337,9 +341,9 @@ mmix_local_alignment (tree type ATTRIBUTE_UNUSED, unsigned basic_align)
return basic_align;
}
/* CONDITIONAL_REGISTER_USAGE. */
/* TARGET_CONDITIONAL_REGISTER_USAGE. */
void
static void
mmix_conditional_register_usage (void)
{
int i;

2
gcc/config/mmix/mmix.h
View File

@ -275,8 +275,6 @@ struct GTY(()) machine_function
1, 1, 1, 1, 1, 1, 1 \
}
#define CONDITIONAL_REGISTER_USAGE mmix_conditional_register_usage ()
#define INCOMING_REGNO(OUT) mmix_opposite_regno (OUT, 0)
#define OUTGOING_REGNO(IN) mmix_opposite_regno (IN, 1)

25
gcc/config/mn10300/mn10300.c
View File

@ -2475,6 +2475,28 @@ mn10300_adjust_sched_cost (rtx insn, rtx link, rtx dep, int cost)
/* Extract the latency value from the timings attribute. */
return timings < 100 ? (timings % 10) : (timings % 100);
}
static void
mn10300_conditional_register_usage (void)
{
unsigned int i;
if (!TARGET_AM33)
{
for (i = FIRST_EXTENDED_REGNUM;
i <= LAST_EXTENDED_REGNUM; i++)
fixed_regs[i] = call_used_regs[i] = 1;
}
if (!TARGET_AM33_2)
{
for (i = FIRST_FP_REGNUM;
i <= LAST_FP_REGNUM; i++)
fixed_regs[i] = call_used_regs[i] = 1;
}
if (flag_pic)
fixed_regs[PIC_OFFSET_TABLE_REGNUM] =
call_used_regs[PIC_OFFSET_TABLE_REGNUM] = 1;
}
/* Initialize the GCC target structure. */
@ -2561,4 +2583,7 @@ mn10300_adjust_sched_cost (rtx insn, rtx link, rtx dep, int cost)
#undef TARGET_SCHED_ADJUST_COST
#define TARGET_SCHED_ADJUST_COST mn10300_adjust_sched_cost
#undef TARGET_CONDITIONAL_REGISTER_USAGE
#define TARGET_CONDITIONAL_REGISTER_USAGE mn10300_conditional_register_usage
struct gcc_target targetm = TARGET_INITIALIZER;

21
gcc/config/mn10300/mn10300.h
View File

@ -202,27 +202,6 @@ extern enum processor_type mn10300_tune_cpu;
, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 51 \
}
#define CONDITIONAL_REGISTER_USAGE \
{ \
unsigned int i; \
\
if (!TARGET_AM33) \
{ \
for (i = FIRST_EXTENDED_REGNUM; \
i <= LAST_EXTENDED_REGNUM; i++) \
fixed_regs[i] = call_used_regs[i] = 1; \
} \
if (!TARGET_AM33_2) \
{ \
for (i = FIRST_FP_REGNUM; \
i <= LAST_FP_REGNUM; i++) \
fixed_regs[i] = call_used_regs[i] = 1; \
} \
if (flag_pic) \
fixed_regs[PIC_OFFSET_TABLE_REGNUM] = \
call_used_regs[PIC_OFFSET_TABLE_REGNUM] = 1;\
}
/* Return number of consecutive hard regs needed starting at reg REGNO
to hold something of mode MODE.

24
gcc/config/pa/pa.c
View File

@ -181,6 +181,7 @@ static rtx pa_delegitimize_address (rtx);
static bool pa_print_operand_punct_valid_p (unsigned char);
static rtx pa_internal_arg_pointer (void);
static bool pa_can_eliminate (const int, const int);
static void pa_conditional_register_usage (void);
/* The following extra sections are only used for SOM. */
static GTY(()) section *som_readonly_data_section;
@ -386,6 +387,8 @@ static const struct default_options pa_option_optimization_table[] =
#define TARGET_INTERNAL_ARG_POINTER pa_internal_arg_pointer
#undef TARGET_CAN_ELIMINATE
#define TARGET_CAN_ELIMINATE pa_can_eliminate
#undef TARGET_CONDITIONAL_REGISTER_USAGE
#define TARGET_CONDITIONAL_REGISTER_USAGE pa_conditional_register_usage
struct gcc_target targetm = TARGET_INITIALIZER;
@ -10176,4 +10179,25 @@ pa_initial_elimination_offset (int from, int to)
return offset;
}
static void
pa_conditional_register_usage (void)
{
int i;
if (!TARGET_64BIT && !TARGET_PA_11)
{
for (i = 56; i <= FP_REG_LAST; i++)
fixed_regs[i] = call_used_regs[i] = 1;
for (i = 33; i < 56; i += 2)
fixed_regs[i] = call_used_regs[i] = 1;
}
if (TARGET_DISABLE_FPREGS || TARGET_SOFT_FLOAT)
{
for (i = FP_REG_FIRST; i <= FP_REG_LAST; i++)
fixed_regs[i] = call_used_regs[i] = 1;
}
if (flag_pic)
fixed_regs[PIC_OFFSET_TABLE_REGNUM] = 1;
}
#include "gt-pa.h"

19
gcc/config/pa/pa32-regs.h
View File

@ -121,25 +121,6 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
/* shift register and soft frame pointer */ \
1, 1}
#define CONDITIONAL_REGISTER_USAGE \
{ \
int i; \
if (!TARGET_PA_11) \
{ \
for (i = 56; i < 88; i++) \
fixed_regs[i] = call_used_regs[i] = 1; \
for (i = 33; i < 88; i += 2) \
fixed_regs[i] = call_used_regs[i] = 1; \
} \
if (TARGET_DISABLE_FPREGS || TARGET_SOFT_FLOAT)\
{ \
for (i = 32; i < 88; i++) \
fixed_regs[i] = call_used_regs[i] = 1; \
} \
if (flag_pic) \
fixed_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \
}
/* Allocate the call used registers first. This should minimize
the number of registers that need to be saved (as call used
registers will generally not be allocated across a call).

12
gcc/config/pa/pa64-regs.h
View File

@ -101,18 +101,6 @@ along with GCC; see the file COPYING3. If not see
/* shift register and soft frame pointer */ \
1, 1}
#define CONDITIONAL_REGISTER_USAGE \
{ \
int i; \
if (TARGET_DISABLE_FPREGS || TARGET_SOFT_FLOAT)\
{ \
for (i = FP_REG_FIRST; i <= FP_REG_LAST; i++)\
fixed_regs[i] = call_used_regs[i] = 1; \
} \
if (flag_pic) \
fixed_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \
}
/* Allocate the call used registers first. This should minimize
the number of registers that need to be saved (as call used
registers will generally not be allocated across a call).

37
gcc/config/pdp11/pdp11.c
View File

@ -156,6 +156,7 @@ static rtx pdp11_function_arg (CUMULATIVE_ARGS *, enum machine_mode,
const_tree, bool);
static void pdp11_function_arg_advance (CUMULATIVE_ARGS *,
enum machine_mode, const_tree, bool);
static void pdp11_conditional_register_usage (void);
/* Implement TARGET_OPTION_OPTIMIZATION_TABLE. */
@ -230,6 +231,9 @@ static const struct default_options pdp11_option_optimization_table[] =
#undef TARGET_LEGITIMATE_ADDRESS_P
#define TARGET_LEGITIMATE_ADDRESS_P pdp11_legitimate_address_p
#undef TARGET_CONDITIONAL_REGISTER_USAGE
#define TARGET_CONDITIONAL_REGISTER_USAGE pdp11_conditional_register_usage
/* Implement TARGET_HANDLE_OPTION. */
@ -2101,4 +2105,37 @@ pdp11_function_arg_advance (CUMULATIVE_ARGS *cum, enum machine_mode mode,
: int_size_in_bytes (type));
}
/* Make sure everything's fine if we *don't* have an FPU.
This assumes that putting a register in fixed_regs will keep the
compiler's mitts completely off it. We don't bother to zero it out
of register classes. Also fix incompatible register naming with
the UNIX assembler. */
static void
pdp11_conditional_register_usage (void)
{
int i;
HARD_REG_SET x;
if (!TARGET_FPU)
{
COPY_HARD_REG_SET (x, reg_class_contents[(int)FPU_REGS]);
for (i = 0; i < FIRST_PSEUDO_REGISTER; i++ )
if (TEST_HARD_REG_BIT (x, i))
fixed_regs[i] = call_used_regs[i] = 1;
}
if (TARGET_AC0)
call_used_regs[AC0_REGNUM] = 1;
if (TARGET_UNIX_ASM)
{
/* Change names of FPU registers for the UNIX assembler. */
reg_names[8] = "fr0";
reg_names[9] = "fr1";
reg_names[10] = "fr2";
reg_names[11] = "fr3";
reg_names[12] = "fr4";
reg_names[13] = "fr5";
}
}
struct gcc_target targetm = TARGET_INITIALIZER;

32
gcc/config/pdp11/pdp11.h
View File

@ -168,38 +168,6 @@ extern const struct real_format pdp11_d_format;
0, 0, 0, 0, 0, 0, 1, 1 }
/* Make sure everything's fine if we *don't* have an FPU.
This assumes that putting a register in fixed_regs will keep the
compiler's mitts completely off it. We don't bother to zero it out
of register classes. Also fix incompatible register naming with
the UNIX assembler.
*/
#define CONDITIONAL_REGISTER_USAGE \
{ \
int i; \
HARD_REG_SET x; \
if (!TARGET_FPU) \
{ \
COPY_HARD_REG_SET (x, reg_class_contents[(int)FPU_REGS]); \
for (i = R0_REGNUM; i < FIRST_PSEUDO_REGISTER; i++ ) \
if (TEST_HARD_REG_BIT (x, i)) \
fixed_regs[i] = call_used_regs[i] = 1; \
} \
\
if (TARGET_AC0) \
call_used_regs[AC0_REGNUM] = 1; \
if (TARGET_UNIX_ASM) \
{ \
/* Change names of FPU registers for the UNIX assembler. */ \
reg_names[8] = "fr0"; \
reg_names[9] = "fr1"; \
reg_names[10] = "fr2"; \
reg_names[11] = "fr3"; \
reg_names[12] = "fr4"; \
reg_names[13] = "fr5"; \
} \
}
/* Return number of consecutive hard regs needed starting at reg REGNO
to hold something of mode MODE.
This is ordinarily the length in words of a value of mode MODE

1
gcc/config/rs6000/rs6000-protos.h
View File

@ -167,7 +167,6 @@ extern void rs6000_emit_epilogue (int);
extern void rs6000_emit_eh_reg_restore (rtx, rtx);
extern const char * output_isel (rtx *);
extern bool rs6000_tls_referenced_p (rtx);
extern void rs6000_conditional_register_usage (void);
extern void rs6000_aix_asm_output_dwarf_table_ref (char *);

6
gcc/config/rs6000/rs6000.c
View File

@ -1202,6 +1202,7 @@ static const reg_class_t *rs6000_ira_cover_classes (void);
const int INSN_NOT_AVAILABLE = -1;
static enum machine_mode rs6000_eh_return_filter_mode (void);
static bool rs6000_can_eliminate (const int, const int);
static void rs6000_conditional_register_usage (void);
static void rs6000_trampoline_init (rtx, tree, rtx);
/* Hash table stuff for keeping track of TOC entries. */
@ -1630,6 +1631,9 @@ static const struct default_options rs6000_option_optimization_table[] =
#undef TARGET_CAN_ELIMINATE
#define TARGET_CAN_ELIMINATE rs6000_can_eliminate
#undef TARGET_CONDITIONAL_REGISTER_USAGE
#define TARGET_CONDITIONAL_REGISTER_USAGE rs6000_conditional_register_usage
#undef TARGET_TRAMPOLINE_INIT
#define TARGET_TRAMPOLINE_INIT rs6000_trampoline_init
@ -6989,7 +6993,7 @@ rs6000_offsettable_memref_p (rtx op)
}
/* Change register usage conditional on target flags. */
void
static void
rs6000_conditional_register_usage (void)
{
int i;

5
gcc/config/rs6000/rs6000.h
View File

@ -1102,11 +1102,6 @@ extern unsigned rs6000_pointer_size;
#define FIXED_SCRATCH 0
/* Define this macro to change register usage conditional on target
flags. */
#define CONDITIONAL_REGISTER_USAGE rs6000_conditional_register_usage ()
/* Specify the registers used for certain standard purposes.
The values of these macros are register numbers. */

1
gcc/config/rx/rx-protos.h
View File

@ -25,7 +25,6 @@
#define Mmode enum machine_mode
#define Fargs CUMULATIVE_ARGS
extern void rx_conditional_register_usage (void);
extern void rx_expand_prologue (void);
extern int rx_initial_elimination_offset (int, int);

5
gcc/config/rx/rx.c
View File

@ -933,7 +933,7 @@ is_naked_func (const_tree decl)
static bool use_fixed_regs = false;
void
static void
rx_conditional_register_usage (void)
{
static bool using_fixed_regs = false;
@ -2847,6 +2847,9 @@ rx_memory_move_cost (enum machine_mode mode, reg_class_t regclass, bool in)
#undef TARGET_CAN_ELIMINATE
#define TARGET_CAN_ELIMINATE rx_can_eliminate
#undef TARGET_CONDITIONAL_REGISTER_USAGE
#define TARGET_CONDITIONAL_REGISTER_USAGE rx_conditional_register_usage
#undef TARGET_ASM_TRAMPOLINE_TEMPLATE
#define TARGET_ASM_TRAMPOLINE_TEMPLATE rx_trampoline_template

3
gcc/config/rx/rx.h
View File

@ -245,9 +245,6 @@ enum reg_class
1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1 \
}
#define CONDITIONAL_REGISTER_USAGE \
rx_conditional_register_usage ()
#define LIBCALL_VALUE(MODE) \
gen_rtx_REG (((GET_MODE_CLASS (MODE) != MODE_INT \
|| GET_MODE_SIZE (MODE) >= 4) \

1
gcc/config/s390/s390-protos.h
View File

@ -38,7 +38,6 @@ extern HOST_WIDE_INT s390_initial_elimination_offset (int, int);
extern void s390_emit_prologue (void);
extern void s390_emit_epilogue (bool);
extern void s390_function_profiler (FILE *, int);
extern void s390_conditional_register_usage (void);
extern void s390_set_has_landing_pad_p (bool);
extern bool s390_hard_regno_mode_ok (unsigned int, enum machine_mode);
extern bool s390_hard_regno_rename_ok (unsigned int, unsigned int);

7
gcc/config/s390/s390.c
View File

@ -9742,9 +9742,9 @@ s390_emit_call (rtx addr_location, rtx tls_call, rtx result_reg,
return insn;
}
/* Implement CONDITIONAL_REGISTER_USAGE. */
/* Implement TARGET_CONDITIONAL_REGISTER_USAGE. */
void
static void
s390_conditional_register_usage (void)
{
int i;
@ -10648,6 +10648,9 @@ s390_loop_unroll_adjust (unsigned nunroll, struct loop *loop)
#undef TARGET_CAN_ELIMINATE
#define TARGET_CAN_ELIMINATE s390_can_eliminate
#undef TARGET_CONDITIONAL_REGISTER_USAGE
#define TARGET_CONDITIONAL_REGISTER_USAGE s390_conditional_register_usage
#undef TARGET_LOOP_UNROLL_ADJUST
#define TARGET_LOOP_UNROLL_ADJUST s390_loop_unroll_adjust

2
gcc/config/s390/s390.h
View File

@ -373,8 +373,6 @@ extern int s390_arch_flags;
1, 1, 1, 1, \
0, 0 }
#define CONDITIONAL_REGISTER_USAGE s390_conditional_register_usage ()
/* Preferred register allocation order. */
#define REG_ALLOC_ORDER \
{ 1, 2, 3, 4, 5, 0, 12, 11, 10, 9, 8, 7, 6, 14, 13, \

11
gcc/config/score/score.c
View File

@ -138,6 +138,9 @@ static const struct default_options score_option_optimization_table[] =
#undef TARGET_CAN_ELIMINATE
#define TARGET_CAN_ELIMINATE score_can_eliminate
#undef TARGET_CONDITIONAL_REGISTER_USAGE
#define TARGET_CONDITIONAL_REGISTER_USAGE score_conditional_register_usage
#undef TARGET_ASM_TRAMPOLINE_TEMPLATE
#define TARGET_ASM_TRAMPOLINE_TEMPLATE score_asm_trampoline_template
#undef TARGET_TRAMPOLINE_INIT
@ -1232,4 +1235,12 @@ score_block_move (rtx *ops)
return false;
}
static void
score_conditional_register_usage (void)
{
if (!flag_pic)
fixed_regs[PIC_OFFSET_TABLE_REGNUM] =
call_used_regs[PIC_OFFSET_TABLE_REGNUM] = 0;
}
struct gcc_target targetm = TARGET_INITIALIZER;

9
gcc/config/score/score.h
View File

@ -218,7 +218,7 @@
Regarding coprocessor registers: without evidence to the contrary,
it's best to assume that each coprocessor register has a unique
use. This can be overridden, in, e.g., TARGET_OPTION_OVERRIDE or
CONDITIONAL_REGISTER_USAGE should the assumption be inappropriate
TARGET_CONDITIONAL_REGISTER_USAGE should the assumption be inappropriate
for a particular target. */
/* Control Registers, use mfcr/mtcr insn
@ -305,13 +305,6 @@
/* Macro to conditionally modify fixed_regs/call_used_regs. */
#define PIC_OFFSET_TABLE_REGNUM 29
#define CONDITIONAL_REGISTER_USAGE \
{ \
if (!flag_pic) \
fixed_regs[PIC_OFFSET_TABLE_REGNUM] = \
call_used_regs[PIC_OFFSET_TABLE_REGNUM] = 0; \
}
#define HARD_REGNO_NREGS(REGNO, MODE) \
((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)

52
gcc/config/sh/sh.c
View File

@ -298,6 +298,7 @@ static void sh_encode_section_info (tree, rtx, int);
static int sh2a_function_vector_p (tree);
static void sh_trampoline_init (rtx, tree, rtx);
static rtx sh_trampoline_adjust_address (rtx);
static void sh_conditional_register_usage (void);
static const struct attribute_spec sh_attribute_table[] =
{
@ -588,6 +589,9 @@ static const struct default_options sh_option_optimization_table[] =
#undef TARGET_SECONDARY_RELOAD
#define TARGET_SECONDARY_RELOAD sh_secondary_reload
#undef TARGET_CONDITIONAL_REGISTER_USAGE
#define TARGET_CONDITIONAL_REGISTER_USAGE sh_conditional_register_usage
#undef TARGET_LEGITIMATE_ADDRESS_P
#define TARGET_LEGITIMATE_ADDRESS_P sh_legitimate_address_p
@ -12415,6 +12419,54 @@ sh_secondary_reload (bool in_p, rtx x, reg_class_t rclass_i,
return NO_REGS;
}
static void
sh_conditional_register_usage (void)
{
int regno;
for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno ++)
if (! VALID_REGISTER_P (regno))
fixed_regs[regno] = call_used_regs[regno] = 1;
/* R8 and R9 are call-clobbered on SH5, but not on earlier SH ABIs. */
if (TARGET_SH5)
{
call_used_regs[FIRST_GENERAL_REG + 8]
= call_used_regs[FIRST_GENERAL_REG + 9] = 1;
call_really_used_regs[FIRST_GENERAL_REG + 8]
= call_really_used_regs[FIRST_GENERAL_REG + 9] = 1;
}
if (TARGET_SHMEDIA)
{
regno_reg_class[FIRST_GENERAL_REG] = GENERAL_REGS;
CLEAR_HARD_REG_SET (reg_class_contents[FP0_REGS]);
regno_reg_class[FIRST_FP_REG] = FP_REGS;
}
if (flag_pic)
{
fixed_regs[PIC_OFFSET_TABLE_REGNUM] = 1;
call_used_regs[PIC_OFFSET_TABLE_REGNUM] = 1;
}
/* Renesas saves and restores mac registers on call. */
if (TARGET_HITACHI && ! TARGET_NOMACSAVE)
{
call_really_used_regs[MACH_REG] = 0;
call_really_used_regs[MACL_REG] = 0;
}
for (regno = FIRST_FP_REG + (TARGET_LITTLE_ENDIAN != 0);
regno <= LAST_FP_REG; regno += 2)
SET_HARD_REG_BIT (reg_class_contents[DF_HI_REGS], regno);
if (TARGET_SHMEDIA)
{
for (regno = FIRST_TARGET_REG; regno <= LAST_TARGET_REG; regno ++)
if (! fixed_regs[regno] && call_really_used_regs[regno])
SET_HARD_REG_BIT (reg_class_contents[SIBCALL_REGS], regno);
}
else
for (regno = FIRST_GENERAL_REG; regno <= LAST_GENERAL_REG; regno++)
if (! fixed_regs[regno] && call_really_used_regs[regno])
SET_HARD_REG_BIT (reg_class_contents[SIBCALL_REGS], regno);
}
enum sh_divide_strategy_e sh_div_strategy = SH_DIV_STRATEGY_DEFAULT;
#include "gt-sh.h"

57
gcc/config/sh/sh.h
View File

@ -106,51 +106,6 @@ do { \
#define SUBTARGET_FRAME_POINTER_REQUIRED 0
#endif
#define CONDITIONAL_REGISTER_USAGE do \
{ \
int regno; \
for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno ++) \
if (! VALID_REGISTER_P (regno)) \
fixed_regs[regno] = call_used_regs[regno] = 1; \
/* R8 and R9 are call-clobbered on SH5, but not on earlier SH ABIs. */ \
if (TARGET_SH5) \
{ \
call_used_regs[FIRST_GENERAL_REG + 8] \
= call_used_regs[FIRST_GENERAL_REG + 9] = 1; \
call_really_used_regs[FIRST_GENERAL_REG + 8] \
= call_really_used_regs[FIRST_GENERAL_REG + 9] = 1; \
} \
if (TARGET_SHMEDIA) \
{ \
regno_reg_class[FIRST_GENERAL_REG] = GENERAL_REGS; \
CLEAR_HARD_REG_SET (reg_class_contents[FP0_REGS]); \
regno_reg_class[FIRST_FP_REG] = FP_REGS; \
} \
if (flag_pic) \
{ \
fixed_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \
call_used_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \
} \
/* Renesas saves and restores mac registers on call. */ \
if (TARGET_HITACHI && ! TARGET_NOMACSAVE) \
{ \
call_really_used_regs[MACH_REG] = 0; \
call_really_used_regs[MACL_REG] = 0; \
} \
for (regno = FIRST_FP_REG + (TARGET_LITTLE_ENDIAN != 0); \
regno <= LAST_FP_REG; regno += 2) \
SET_HARD_REG_BIT (reg_class_contents[DF_HI_REGS], regno); \
if (TARGET_SHMEDIA) \
{ \
for (regno = FIRST_TARGET_REG; regno <= LAST_TARGET_REG; regno ++)\
if (! fixed_regs[regno] && call_really_used_regs[regno]) \
SET_HARD_REG_BIT (reg_class_contents[SIBCALL_REGS], regno); \
} \
else \
for (regno = FIRST_GENERAL_REG; regno <= LAST_GENERAL_REG; regno++) \
if (! fixed_regs[regno] && call_really_used_regs[regno]) \
SET_HARD_REG_BIT (reg_class_contents[SIBCALL_REGS], regno); \
} while (0)
/* Nonzero if this is an ELF target - compile time only */
#define TARGET_ELF 0
@ -806,8 +761,8 @@ extern char sh_additional_register_names[ADDREGNAMES_SIZE] \
(GENERAL_REGISTER_P (REGNO) || FP_REGISTER_P (REGNO) \
|| TARGET_REGISTER_P (REGNO))
/* This is to be used in CONDITIONAL_REGISTER_USAGE, to mark registers
that should be fixed. */
/* This is to be used in TARGET_CONDITIONAL_REGISTER_USAGE, to mark
registers that should be fixed. */
#define VALID_REGISTER_P(REGNO) \
(SHMEDIA_REGISTER_P (REGNO) || XD_REGISTER_P (REGNO) \
|| (REGNO) == AP_REG || (REGNO) == RAP_REG \
@ -908,8 +863,8 @@ extern char sh_additional_register_names[ADDREGNAMES_SIZE] \
1, 1, \
}
/* CONDITIONAL_REGISTER_USAGE might want to make a register call-used, yet
fixed, like PIC_OFFSET_TABLE_REGNUM. */
/* TARGET_CONDITIONAL_REGISTER_USAGE might want to make a register
call-used, yet fixed, like PIC_OFFSET_TABLE_REGNUM. */
#define CALL_REALLY_USED_REGISTERS CALL_USED_REGISTERS
/* Only the lower 32-bits of R10-R14 are guaranteed to be preserved
@ -1147,7 +1102,7 @@ enum reg_class
{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00300000 }, \
/* FPUL_REGS: */ \
{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00400000 }, \
/* SIBCALL_REGS: Initialized in CONDITIONAL_REGISTER_USAGE. */ \
/* SIBCALL_REGS: Initialized in TARGET_CONDITIONAL_REGISTER_USAGE. */ \
{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, \
/* GENERAL_REGS: */ \
{ 0xffffffff, 0xffffffff, 0x00000000, 0x00000000, 0x03020000 }, \
@ -1155,7 +1110,7 @@ enum reg_class
{ 0x00000000, 0x00000000, 0x00000001, 0x00000000, 0x00000000 }, \
/* FP_REGS: */ \
{ 0x00000000, 0x00000000, 0xffffffff, 0xffffffff, 0x00000000 }, \
/* DF_HI_REGS: Initialized in CONDITIONAL_REGISTER_USAGE. */ \
/* DF_HI_REGS: Initialized in TARGET_CONDITIONAL_REGISTER_USAGE. */ \
{ 0x00000000, 0x00000000, 0xffffffff, 0xffffffff, 0x0000ff00 }, \
/* DF_REGS: */ \
{ 0x00000000, 0x00000000, 0xffffffff, 0xffffffff, 0x0000ff00 }, \

54
gcc/config/sparc/sparc.c
View File

@ -441,6 +441,7 @@ static void sparc_output_dwarf_dtprel (FILE *, int, rtx) ATTRIBUTE_UNUSED;
static void sparc_file_end (void);
static bool sparc_frame_pointer_required (void);
static bool sparc_can_eliminate (const int, const int);
static void sparc_conditional_register_usage (void);
#ifdef TARGET_ALTERNATE_LONG_DOUBLE_MANGLING
static const char *sparc_mangle_type (const_tree);
#endif
@ -639,6 +640,9 @@ static const struct default_options sparc_option_optimization_table[] =
#undef TARGET_CAN_ELIMINATE
#define TARGET_CAN_ELIMINATE sparc_can_eliminate
#undef TARGET_CONDITIONAL_REGISTER_USAGE
#define TARGET_CONDITIONAL_REGISTER_USAGE sparc_conditional_register_usage
#ifdef TARGET_ALTERNATE_LONG_DOUBLE_MANGLING
#undef TARGET_MANGLE_TYPE
#define TARGET_MANGLE_TYPE sparc_mangle_type
@ -9621,4 +9625,54 @@ sparc_can_eliminate (const int from ATTRIBUTE_UNUSED, const int to)
|| !targetm.frame_pointer_required ());
}
/* If !TARGET_FPU, then make the fp registers and fp cc regs fixed so that
they won't be allocated. */
static void
sparc_conditional_register_usage (void)
{
if (PIC_OFFSET_TABLE_REGNUM != INVALID_REGNUM)
{
fixed_regs[PIC_OFFSET_TABLE_REGNUM] = 1;
call_used_regs[PIC_OFFSET_TABLE_REGNUM] = 1;
}
/* If the user has passed -f{fixed,call-{used,saved}}-g5 */
/* then honor it. */
if (TARGET_ARCH32 && fixed_regs[5])
fixed_regs[5] = 1;
else if (TARGET_ARCH64 && fixed_regs[5] == 2)
fixed_regs[5] = 0;
if (! TARGET_V9)
{
int regno;
for (regno = SPARC_FIRST_V9_FP_REG;
regno <= SPARC_LAST_V9_FP_REG;
regno++)
fixed_regs[regno] = 1;
/* %fcc0 is used by v8 and v9. */
for (regno = SPARC_FIRST_V9_FCC_REG + 1;
regno <= SPARC_LAST_V9_FCC_REG;
regno++)
fixed_regs[regno] = 1;
}
if (! TARGET_FPU)
{
int regno;
for (regno = 32; regno < SPARC_LAST_V9_FCC_REG; regno++)
fixed_regs[regno] = 1;
}
/* If the user has passed -f{fixed,call-{used,saved}}-g2 */
/* then honor it. Likewise with g3 and g4. */
if (fixed_regs[2] == 2)
fixed_regs[2] = ! TARGET_APP_REGS;
if (fixed_regs[3] == 2)
fixed_regs[3] = ! TARGET_APP_REGS;
if (TARGET_ARCH32 && fixed_regs[4] == 2)
fixed_regs[4] = ! TARGET_APP_REGS;
else if (TARGET_CM_EMBMEDANY)
fixed_regs[4] = 1;
else if (fixed_regs[4] == 2)
fixed_regs[4] = 0;
}
#include "gt-sparc.h"

56
gcc/config/sparc/sparc.h
View File

@ -517,7 +517,8 @@ extern enum cmodel sparc_cmodel;
/* MASK_APP_REGS must always be the default because that's what
FIXED_REGISTERS is set to and -ffixed- is processed before
CONDITIONAL_REGISTER_USAGE is called (where we process -mno-app-regs). */
TARGET_CONDITIONAL_REGISTER_USAGE is called (where we process
-mno-app-regs). */
#define TARGET_DEFAULT (MASK_APP_REGS + MASK_FPU)
/* Processor type.
@ -756,7 +757,7 @@ extern struct sparc_cpu_select sparc_select[];
stack frames.
Registers fixed in arch32 and not arch64 (or vice-versa) are marked in
CONDITIONAL_REGISTER_USAGE in order to properly handle -ffixed-.
TARGET_CONDITIONAL_REGISTER_USAGE in order to properly handle -ffixed-.
*/
#define FIXED_REGISTERS \
@ -802,57 +803,6 @@ extern struct sparc_cpu_select sparc_select[];
\
1, 1, 1, 1, 1, 1}
/* If !TARGET_FPU, then make the fp registers and fp cc regs fixed so that
they won't be allocated. */
#define CONDITIONAL_REGISTER_USAGE \
do \
{ \
if (PIC_OFFSET_TABLE_REGNUM != INVALID_REGNUM) \
{ \
fixed_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \
call_used_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \
} \
/* If the user has passed -f{fixed,call-{used,saved}}-g5 */ \
/* then honor it. */ \
if (TARGET_ARCH32 && fixed_regs[5]) \
fixed_regs[5] = 1; \
else if (TARGET_ARCH64 && fixed_regs[5] == 2) \
fixed_regs[5] = 0; \
if (! TARGET_V9) \
{ \
int regno; \
for (regno = SPARC_FIRST_V9_FP_REG; \
regno <= SPARC_LAST_V9_FP_REG; \
regno++) \
fixed_regs[regno] = 1; \
/* %fcc0 is used by v8 and v9. */ \
for (regno = SPARC_FIRST_V9_FCC_REG + 1; \
regno <= SPARC_LAST_V9_FCC_REG; \
regno++) \
fixed_regs[regno] = 1; \
} \
if (! TARGET_FPU) \
{ \
int regno; \
for (regno = 32; regno < SPARC_LAST_V9_FCC_REG; regno++) \
fixed_regs[regno] = 1; \
} \
/* If the user has passed -f{fixed,call-{used,saved}}-g2 */ \
/* then honor it. Likewise with g3 and g4. */ \
if (fixed_regs[2] == 2) \
fixed_regs[2] = ! TARGET_APP_REGS; \
if (fixed_regs[3] == 2) \
fixed_regs[3] = ! TARGET_APP_REGS; \
if (TARGET_ARCH32 && fixed_regs[4] == 2) \
fixed_regs[4] = ! TARGET_APP_REGS; \
else if (TARGET_CM_EMBMEDANY) \
fixed_regs[4] = 1; \
else if (fixed_regs[4] == 2) \
fixed_regs[4] = 0; \
} \
while (0)
/* Return number of consecutive hard regs needed starting at reg REGNO
to hold something of mode MODE.
This is ordinarily the length in words of a value of mode MODE

1
gcc/config/spu/spu-protos.h
View File

@ -58,7 +58,6 @@ extern rtx spu_function_value (const_tree type, const_tree func);
extern void spu_setup_incoming_varargs (int *cum, enum machine_mode mode,
tree type, int *pretend_size,
int no_rtl);
extern void spu_conditional_register_usage (void);
extern int spu_expand_mov (rtx * ops, enum machine_mode mode);
extern int spu_split_load (rtx * ops);
extern int spu_split_store (rtx * ops);

6
gcc/config/spu/spu.c
View File

@ -231,6 +231,7 @@ static section *spu_select_section (tree, int, unsigned HOST_WIDE_INT);
static void spu_unique_section (tree, int);
static rtx spu_expand_load (rtx, rtx, rtx, int);
static void spu_trampoline_init (rtx, tree, rtx);
static void spu_conditional_register_usage (void);
/* Which instruction set architecture to use. */
int spu_arch;
@ -489,6 +490,9 @@ static const struct attribute_spec spu_attribute_table[] =
#undef TARGET_EXCEPT_UNWIND_INFO
#define TARGET_EXCEPT_UNWIND_INFO sjlj_except_unwind_info
#undef TARGET_CONDITIONAL_REGISTER_USAGE
#define TARGET_CONDITIONAL_REGISTER_USAGE spu_conditional_register_usage
struct gcc_target targetm = TARGET_INITIALIZER;
static void
@ -4285,7 +4289,7 @@ spu_setup_incoming_varargs (CUMULATIVE_ARGS * cum, enum machine_mode mode,
}
}
void
static void
spu_conditional_register_usage (void)
{
if (flag_pic)

3
gcc/config/spu/spu.h
View File

@ -167,9 +167,6 @@ extern GTY(()) int spu_tune;
1, 1, 1 \
}
#define CONDITIONAL_REGISTER_USAGE \
spu_conditional_register_usage()
/* Values in Registers */

17
gcc/config/v850/v850.c
View File

@ -3064,6 +3064,20 @@ v850_can_eliminate (const int from ATTRIBUTE_UNUSED, const int to)
return (to == STACK_POINTER_REGNUM ? ! frame_pointer_needed : true);
}
/* Worker function for TARGET_CONDITIONAL_REGISTER_USAGE.
If TARGET_APP_REGS is not defined then add r2 and r5 to
the pool of fixed registers. See PR 14505. */
static void
v850_conditional_register_usage (void)
{
if (TARGET_APP_REGS)
{
fixed_regs[2] = 0; call_used_regs[2] = 0;
fixed_regs[5] = 0; call_used_regs[5] = 1;
}
}
/* Worker function for TARGET_ASM_TRAMPOLINE_TEMPLATE. */
@ -3194,6 +3208,9 @@ static const struct attribute_spec v850_attribute_table[] =
#undef TARGET_CAN_ELIMINATE
#define TARGET_CAN_ELIMINATE v850_can_eliminate
#undef TARGET_CONDITIONAL_REGISTER_USAGE
#define TARGET_CONDITIONAL_REGISTER_USAGE v850_conditional_register_usage
#undef TARGET_ASM_TRAMPOLINE_TEMPLATE
#define TARGET_ASM_TRAMPOLINE_TEMPLATE v850_asm_trampoline_template
#undef TARGET_TRAMPOLINE_INIT

12
gcc/config/v850/v850.h
View File

@ -256,18 +256,6 @@ extern struct small_memory_info small_memory[(int)SMALL_MEMORY_max];
34, 35 \
}
/* If TARGET_APP_REGS is not defined then add r2 and r5 to
the pool of fixed registers. See PR 14505. */
#define CONDITIONAL_REGISTER_USAGE \
{ \
if (TARGET_APP_REGS) \
{ \
fixed_regs[2] = 0; call_used_regs[2] = 0; \
fixed_regs[5] = 0; call_used_regs[5] = 1; \
} \
}
/* Return number of consecutive hard regs needed starting at reg REGNO
to hold something of mode MODE.

8
gcc/doc/tm.texi
View File

@ -1916,8 +1916,8 @@ preserve the entire contents of a register across a call.
@findex global_regs
@findex reg_names
@findex reg_class_contents
@defmac CONDITIONAL_REGISTER_USAGE
Zero or more C statements that may conditionally modify five variables
@deftypefn {Target Hook} void TARGET_CONDITIONAL_REGISTER_USAGE (void)
This hook may conditionally modify five variables
@code{fixed_regs}, @code{call_used_regs}, @code{global_regs},
@code{reg_names}, and @code{reg_class_contents}, to take into account
any dependence of these register sets on target flags. The first three
@ -1932,8 +1932,6 @@ from @code{FIXED_REGISTERS}, @code{CALL_USED_REGISTERS},
@option{-fcall-used-@var{reg}} and @option{-fcall-saved-@var{reg}}
command options have been applied.
You need not define this macro if it has no work to do.
@cindex disabling certain registers
@cindex controlling register usage
If the usage of an entire class of registers depends on the target
@ -1948,7 +1946,7 @@ is called with a letter for a class that shouldn't be used.
of the insn patterns whose constraints permit this class are
controlled by target switches, then GCC will automatically avoid using
these registers when the target switches are opposed to them.)
@end defmac
@end deftypefn
@defmac INCOMING_REGNO (@var{out})
Define this macro if the target machine has register windows. This C

8
gcc/doc/tm.texi.in
View File

@ -1906,8 +1906,8 @@ preserve the entire contents of a register across a call.
@findex global_regs
@findex reg_names
@findex reg_class_contents
@defmac CONDITIONAL_REGISTER_USAGE
Zero or more C statements that may conditionally modify five variables
@hook TARGET_CONDITIONAL_REGISTER_USAGE
This hook may conditionally modify five variables
@code{fixed_regs}, @code{call_used_regs}, @code{global_regs},
@code{reg_names}, and @code{reg_class_contents}, to take into account
any dependence of these register sets on target flags. The first three
@ -1922,8 +1922,6 @@ from @code{FIXED_REGISTERS}, @code{CALL_USED_REGISTERS},
@option{-fcall-used-@var{reg}} and @option{-fcall-saved-@var{reg}}
command options have been applied.
You need not define this macro if it has no work to do.
@cindex disabling certain registers
@cindex controlling register usage
If the usage of an entire class of registers depends on the target
@ -1938,7 +1936,7 @@ is called with a letter for a class that shouldn't be used.
of the insn patterns whose constraints permit this class are
controlled by target switches, then GCC will automatically avoid using
these registers when the target switches are opposed to them.)
@end defmac
@end deftypefn
@defmac INCOMING_REGNO (@var{out})
Define this macro if the target machine has register windows. This C

7
gcc/reginfo.c
View File

@ -342,12 +342,9 @@ init_reg_sets_1 (void)
inv_reg_alloc_order[reg_alloc_order[i]] = i;
#endif
/* This macro allows the fixed or call-used registers
and the register classes to depend on target flags. */
/* Let the target tweak things if necessary. */
#ifdef CONDITIONAL_REGISTER_USAGE
CONDITIONAL_REGISTER_USAGE;
#endif
targetm.conditional_register_usage ();
/* Compute number of hard regs in each class. */

2
gcc/system.h
View File

@ -784,7 +784,7 @@ extern void fancy_abort (const char *, int, const char *) ATTRIBUTE_NORETURN;
ASM_DECLARE_CONSTANT_NAME MODIFY_TARGET_NAME SWITCHES_NEED_SPACES \
SWITCH_CURTAILS_COMPILATION SWITCH_TAKES_ARG WORD_SWITCH_TAKES_ARG \
TARGET_OPTION_TRANSLATE_TABLE HANDLE_PRAGMA_PACK_PUSH_POP \
HANDLE_SYSV_PRAGMA HANDLE_PRAGMA_WEAK
HANDLE_SYSV_PRAGMA HANDLE_PRAGMA_WEAK CONDITIONAL_REGISTER_USAGE
/* Hooks that are no longer used. */
#pragma GCC poison LANG_HOOKS_FUNCTION_MARK LANG_HOOKS_FUNCTION_FREE \

9
gcc/target.def
View File

@ -2258,6 +2258,15 @@ DEFHOOK
bool, (const int from_reg, const int to_reg),
hook_bool_const_int_const_int_true)
/* Modify any or all of fixed_regs, call_used_regs, global_regs,
reg_names, and reg_class_contents to account of the vagaries of the
target. */
DEFHOOK
(conditional_register_usage,
"",
void, (void),
hook_void_void)
/* Functions specific to the C family of frontends. */
#undef HOOK_PREFIX
#define HOOK_PREFIX "TARGET_C_"