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sparc.c: Remove all references to TARGET_EPILOGUE.

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* config/sparc/sparc.c: Remove all references to TARGET_EPILOGUE.
        (sparc_emitting_epilogue): New.
        (leaf_label, output_return, sparc_return_peephole_ok): Remove.
        * config/sparc/sparc-protos.h: Update.
        * config/sparc/sparc.h (MASK_EPILOGUE, TARGET_EPILOGUE): Remove.
        (TARGET_SWITCHES): Update.
        * config/sparc/sparc.md (return): Remove.
        (return_*): Use sparc_emitting_epilogue, not !TARGET_EPILOGUE.
        * config/sparc/freebsd.h, config/sparc/linux64.h, config/sparc/lite.h,
        config/sparc/liteelf.h, config/sparc/netbsd-elf.h,
        config/sparc/sol2-sld-64.h, config/sparc/sol2.h,
        config/sparc/sp64-aout.h, config/sparc/sp64-elf.h,
        config/sparc/sp86x-aout.h, config/sparc/sp86x-elf.h,
        config/sparc/splet.h, config/sparc/vxsparc64.h (TARGET_DEFAULT):
        Remove MASK_EPILOGUE.
        * doc/invoke.texi: Update.

From-SVN: r51626
This commit is contained in:
Richard Henderson 2002-03-30 19:11:20 -08:00 committed by Richard Henderson
parent afaef72670
commit 33074e5fe7
19 changed files with 155 additions and 312 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
gcc/ChangeLog
View File

@ -1,3 +1,22 @@
2002-03-30 Richard Henderson <rth@redhat.com>
* config/sparc/sparc.c: Remove all references to TARGET_EPILOGUE.
(sparc_emitting_epilogue): New.
(leaf_label, output_return, sparc_return_peephole_ok): Remove.
* config/sparc/sparc-protos.h: Update.
* config/sparc/sparc.h (MASK_EPILOGUE, TARGET_EPILOGUE): Remove.
(TARGET_SWITCHES): Update.
* config/sparc/sparc.md (return): Remove.
(return_*): Use sparc_emitting_epilogue, not !TARGET_EPILOGUE.
* config/sparc/freebsd.h, config/sparc/linux64.h, config/sparc/lite.h,
config/sparc/liteelf.h, config/sparc/netbsd-elf.h,
config/sparc/sol2-sld-64.h, config/sparc/sol2.h,
config/sparc/sp64-aout.h, config/sparc/sp64-elf.h,
config/sparc/sp86x-aout.h, config/sparc/sp86x-elf.h,
config/sparc/splet.h, config/sparc/vxsparc64.h (TARGET_DEFAULT):
Remove MASK_EPILOGUE.
* doc/invoke.texi: Update.
2002-03-30 Daniel Berlin <dan@dberlin.org>
* dwarf2out.c (dwarf2out_define): Remove start_source_file call,

2
gcc/config/sparc/freebsd.h
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@ -92,7 +92,7 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
#undef TARGET_DEFAULT
#define TARGET_DEFAULT \
(MASK_V9 + MASK_64BIT + MASK_PTR64 /* + MASK_FASTER_STRUCTS */ \
+ MASK_STACK_BIAS + MASK_APP_REGS + MASK_EPILOGUE + MASK_FPU \
+ MASK_STACK_BIAS + MASK_APP_REGS + MASK_FPU \
+ MASK_LONG_DOUBLE_128 /* + MASK_HARD_QUAD */)
/* The default code model. */

2
gcc/config/sparc/linux64.h
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@ -36,7 +36,7 @@ Boston, MA 02111-1307, USA. */
#undef TARGET_DEFAULT
#define TARGET_DEFAULT \
(MASK_V9 + MASK_PTR64 + MASK_64BIT /* + MASK_HARD_QUAD */ \
+ MASK_STACK_BIAS + MASK_APP_REGS + MASK_EPILOGUE + MASK_FPU + MASK_LONG_DOUBLE_128)
+ MASK_STACK_BIAS + MASK_APP_REGS + MASK_FPU + MASK_LONG_DOUBLE_128)
#endif
#undef ASM_CPU_DEFAULT_SPEC

2
gcc/config/sparc/lite.h
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@ -28,7 +28,7 @@ Boston, MA 02111-1307, USA. */
/* Enable app-regs and epilogue options. Do not enable the fpu. */
#undef TARGET_DEFAULT
#define TARGET_DEFAULT (MASK_APP_REGS + MASK_EPILOGUE)
#define TARGET_DEFAULT MASK_APP_REGS
/* US Software GOFAST library support. */
#undef INIT_SUBTARGET_OPTABS

2
gcc/config/sparc/liteelf.h
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@ -38,7 +38,7 @@ Boston, MA 02111-1307, USA. */
/* Enable app-regs and epilogue options. Do not enable the fpu. */
#undef TARGET_DEFAULT
#define TARGET_DEFAULT (MASK_APP_REGS + MASK_EPILOGUE)
#define TARGET_DEFAULT MASK_APP_REGS
/* US Software GOFAST library support. */
#undef INIT_SUBTARGET_OPTABS

3
gcc/config/sparc/netbsd-elf.h
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@ -137,8 +137,7 @@ Boston, MA 02111-1307, USA. */
#undef TARGET_DEFAULT
#define TARGET_DEFAULT \
(MASK_V9 + MASK_PTR64 + MASK_64BIT /* + MASK_HARD_QUAD */ \
+ MASK_STACK_BIAS + MASK_APP_REGS + MASK_EPILOGUE + MASK_FPU \
+ MASK_LONG_DOUBLE_128)
+ MASK_STACK_BIAS + MASK_APP_REGS + MASK_FPU + MASK_LONG_DOUBLE_128)
#undef SPARC_DEFAULT_CMODEL
#define SPARC_DEFAULT_CMODEL CM_MEDANY

2
gcc/config/sparc/sol2-sld-64.h
View File

@ -27,7 +27,7 @@
#undef TARGET_DEFAULT
#define TARGET_DEFAULT \
(MASK_V9 + MASK_PTR64 + MASK_64BIT /* + MASK_HARD_QUAD */ + \
MASK_STACK_BIAS + MASK_EPILOGUE + MASK_FPU + MASK_LONG_DOUBLE_128)
MASK_STACK_BIAS + MASK_FPU + MASK_LONG_DOUBLE_128)
#endif
/* The default code model. */

2
gcc/config/sparc/sol2.h
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@ -237,7 +237,7 @@ Boston, MA 02111-1307, USA. */
/* Solaris allows 64 bit out and global registers in 32 bit mode.
sparc_override_options will disable V8+ if not generating V9 code. */
#undef TARGET_DEFAULT
#define TARGET_DEFAULT (MASK_EPILOGUE + MASK_FPU + MASK_V8PLUS + MASK_LONG_DOUBLE_128)
#define TARGET_DEFAULT (MASK_FPU + MASK_V8PLUS + MASK_LONG_DOUBLE_128)
/*
* Attempt to turn on access permissions for the stack.

2
gcc/config/sparc/sp64-aout.h
View File

@ -26,7 +26,7 @@ Boston, MA 02111-1307, USA. */
#undef TARGET_DEFAULT
#define TARGET_DEFAULT \
(MASK_V9 + MASK_PTR64 + MASK_64BIT + MASK_HARD_QUAD \
+ MASK_APP_REGS + MASK_EPILOGUE + MASK_FPU + MASK_STACK_BIAS)
+ MASK_APP_REGS + MASK_FPU + MASK_STACK_BIAS)
/* The only code model supported is Medium/Low. */
#undef SPARC_DEFAULT_CMODEL

2
gcc/config/sparc/sp64-elf.h
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@ -33,7 +33,7 @@ Boston, MA 02111-1307, USA. */
#undef TARGET_DEFAULT
#define TARGET_DEFAULT \
(MASK_V9 + MASK_PTR64 + MASK_64BIT + MASK_HARD_QUAD \
+ MASK_APP_REGS + MASK_EPILOGUE + MASK_FPU + MASK_STACK_BIAS + MASK_LONG_DOUBLE_128)
+ MASK_APP_REGS + MASK_FPU + MASK_STACK_BIAS + MASK_LONG_DOUBLE_128)
#undef SPARC_DEFAULT_CMODEL
#define SPARC_DEFAULT_CMODEL CM_EMBMEDANY

2
gcc/config/sparc/sp86x-aout.h
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@ -28,7 +28,7 @@ Boston, MA 02111-1307, USA. */
/* Enable app-regs and epilogue options. Do not enable the fpu. */
#undef TARGET_DEFAULT
#define TARGET_DEFAULT (MASK_APP_REGS + MASK_EPILOGUE)
#define TARGET_DEFAULT MASK_APP_REGS
#undef ASM_SPEC
#define ASM_SPEC "%{v:-v} %{mlittle-endian-data:--little-endian-data} %(asm_cpu)"

2
gcc/config/sparc/sp86x-elf.h
View File

@ -38,7 +38,7 @@ Boston, MA 02111-1307, USA. */
/* Enable app-regs and epilogue options. Do not enable the fpu. */
#undef TARGET_DEFAULT
#define TARGET_DEFAULT (MASK_APP_REGS + MASK_EPILOGUE)
#define TARGET_DEFAULT MASK_APP_REGS
#undef ASM_SPEC
#define ASM_SPEC "%{v:-V} %{mlittle-endian-data:--little-endian-data} %(asm_cpu)"

4
gcc/config/sparc/sparc-protos.h
View File

@ -24,6 +24,8 @@ Boston, MA 02111-1307, USA. */
#ifndef __SPARC_PROTOS_H__
#define __SPARC_PROTOS_H__
extern bool sparc_emitting_epilogue;
#ifdef TREE_CODE
extern struct rtx_def *function_value PARAMS ((tree, enum machine_mode, int));
extern void function_arg_advance PARAMS ((CUMULATIVE_ARGS *,
@ -84,7 +86,6 @@ extern void sparc_emit_set_symbolic_const64 PARAMS ((rtx, rtx, rtx));
extern int sparc_splitdi_legitimate PARAMS ((rtx, rtx));
extern int sparc_absnegfloat_split_legitimate PARAMS ((rtx, rtx));
extern char *output_cbranch PARAMS ((rtx, rtx, int, int, int, int, rtx));
extern const char *output_return PARAMS ((rtx *));
extern const char *output_sibcall PARAMS ((rtx, rtx));
extern char *output_v9branch PARAMS ((rtx, rtx, int, int, int, int, int,
rtx));
@ -115,7 +116,6 @@ extern char *sparc_v8plus_shift PARAMS ((rtx *, rtx, const char *));
/* Function used for V8+ code generation. Returns 1 if the high
32 bits of REG are 0 before INSN. */
extern int sparc_check_64 PARAMS ((rtx, rtx));
extern int sparc_return_peephole_ok PARAMS ((rtx, rtx));
extern rtx gen_df_reg PARAMS ((rtx, int));
#endif /* RTX_CODE */

343
gcc/config/sparc/sparc.c
View File

@ -68,18 +68,17 @@ Boston, MA 02111-1307, USA. */
static int apparent_fsize;
static int actual_fsize;
/* Number of live general or floating point registers needed to be saved
(as 4-byte quantities). This is only done if TARGET_EPILOGUE. */
/* Number of live general or floating point registers needed to be
saved (as 4-byte quantities). */
static int num_gfregs;
/* Save the operands last given to a compare for use when we
generate a scc or bcc insn. */
rtx sparc_compare_op0, sparc_compare_op1;
/* We may need an epilogue if we spill too many registers.
If this is non-zero, then we branch here for the epilogue. */
static rtx leaf_label;
/* Coordinate with the md file wrt special insns created by
sparc_nonflat_function_epilogue. */
bool sparc_emitting_epilogue;
#ifdef LEAF_REGISTERS
@ -3392,31 +3391,28 @@ compute_frame_size (size, leaf_function)
int outgoing_args_size = (current_function_outgoing_args_size
+ REG_PARM_STACK_SPACE (current_function_decl));
if (TARGET_EPILOGUE)
/* N_REGS is the number of 4-byte regs saved thus far. This applies
even to v9 int regs to be consistent with save_regs/restore_regs. */
if (TARGET_ARCH64)
{
/* N_REGS is the number of 4-byte regs saved thus far. This applies
even to v9 int regs to be consistent with save_regs/restore_regs. */
if (TARGET_ARCH64)
{
for (i = 0; i < 8; i++)
if (regs_ever_live[i] && ! call_used_regs[i])
n_regs += 2;
}
else
{
for (i = 0; i < 8; i += 2)
if ((regs_ever_live[i] && ! call_used_regs[i])
|| (regs_ever_live[i+1] && ! call_used_regs[i+1]))
n_regs += 2;
}
for (i = 32; i < (TARGET_V9 ? 96 : 64); i += 2)
for (i = 0; i < 8; i++)
if (regs_ever_live[i] && ! call_used_regs[i])
n_regs += 2;
}
else
{
for (i = 0; i < 8; i += 2)
if ((regs_ever_live[i] && ! call_used_regs[i])
|| (regs_ever_live[i+1] && ! call_used_regs[i+1]))
n_regs += 2;
}
for (i = 32; i < (TARGET_V9 ? 96 : 64); i += 2)
if ((regs_ever_live[i] && ! call_used_regs[i])
|| (regs_ever_live[i+1] && ! call_used_regs[i+1]))
n_regs += 2;
/* Set up values for use in `function_epilogue'. */
num_gfregs = n_regs;
@ -3640,24 +3636,9 @@ sparc_nonflat_function_prologue (file, size, leaf_function)
base = frame_base_name;
}
n_regs = 0;
if (TARGET_EPILOGUE && ! leaf_function)
/* ??? Originally saved regs 0-15 here. */
n_regs = save_regs (file, 0, 8, base, offset, 0, real_offset);
else if (leaf_function)
/* ??? Originally saved regs 0-31 here. */
n_regs = save_regs (file, 0, 8, base, offset, 0, real_offset);
if (TARGET_EPILOGUE)
save_regs (file, 32, TARGET_V9 ? 96 : 64, base, offset, n_regs,
real_offset);
}
leaf_label = 0;
if (leaf_function && actual_fsize != 0)
{
/* warning ("leaf procedure with frame size %d", actual_fsize); */
if (! TARGET_EPILOGUE)
leaf_label = gen_label_rtx ();
n_regs = save_regs (file, 0, 8, base, offset, 0, real_offset);
save_regs (file, 32, TARGET_V9 ? 96 : 64, base, offset, n_regs,
real_offset);
}
}
@ -3684,15 +3665,8 @@ output_restore_regs (file, leaf_function)
base = frame_base_name;
}
n_regs = 0;
if (TARGET_EPILOGUE && ! leaf_function)
/* ??? Originally saved regs 0-15 here. */
n_regs = restore_regs (file, 0, 8, base, offset, 0);
else if (leaf_function)
/* ??? Originally saved regs 0-31 here. */
n_regs = restore_regs (file, 0, 8, base, offset, 0);
if (TARGET_EPILOGUE)
restore_regs (file, 32, TARGET_V9 ? 96 : 64, base, offset, n_regs);
n_regs = restore_regs (file, 0, 8, base, offset, 0);
restore_regs (file, 32, TARGET_V9 ? 96 : 64, base, offset, n_regs);
}
/* This function generates the assembly code for function exit,
@ -3725,12 +3699,6 @@ sparc_nonflat_function_epilogue (file, size, leaf_function)
{
const char *ret;
if (leaf_label)
{
emit_label_after (leaf_label, get_last_insn ());
final_scan_insn (get_last_insn (), file, 0, 0, 1);
}
if (current_function_epilogue_delay_list == 0)
{
/* If code does not drop into the epilogue, we need
@ -3751,95 +3719,93 @@ sparc_nonflat_function_epilogue (file, size, leaf_function)
else
ret = (SKIP_CALLERS_UNIMP_P ? "jmp\t%i7+12" : "ret");
if (TARGET_EPILOGUE || leaf_label)
if (! leaf_function)
{
int old_target_epilogue = TARGET_EPILOGUE;
target_flags &= ~old_target_epilogue;
if (! leaf_function)
if (current_function_calls_eh_return)
{
if (current_function_calls_eh_return)
{
if (current_function_epilogue_delay_list)
abort ();
if (SKIP_CALLERS_UNIMP_P)
abort ();
if (current_function_epilogue_delay_list)
abort ();
if (SKIP_CALLERS_UNIMP_P)
abort ();
fputs ("\trestore\n\tretl\n\tadd\t%sp, %g1, %sp\n", file);
}
/* If we wound up with things in our delay slot, flush them here. */
else if (current_function_epilogue_delay_list)
{
rtx delay = PATTERN (XEXP (current_function_epilogue_delay_list, 0));
if (TARGET_V9 && ! epilogue_renumber (&delay, 1))
{
epilogue_renumber (&delay, 0);
fputs (SKIP_CALLERS_UNIMP_P
? "\treturn\t%i7+12\n"
: "\treturn\t%i7+8\n", file);
final_scan_insn (XEXP (current_function_epilogue_delay_list, 0), file, 1, 0, 0);
}
else
{
rtx insn = emit_jump_insn_after (gen_rtx_RETURN (VOIDmode),
get_last_insn ());
rtx src;
if (GET_CODE (delay) != SET)
abort();
src = SET_SRC (delay);
if (GET_CODE (src) == ASHIFT)
{
if (XEXP (src, 1) != const1_rtx)
abort();
SET_SRC (delay) = gen_rtx_PLUS (GET_MODE (src), XEXP (src, 0),
XEXP (src, 0));
}
PATTERN (insn) = gen_rtx_PARALLEL (VOIDmode,
gen_rtvec (2, delay, PATTERN (insn)));
final_scan_insn (insn, file, 1, 0, 1);
}
}
else if (TARGET_V9 && ! SKIP_CALLERS_UNIMP_P)
fputs ("\treturn\t%i7+8\n\tnop\n", file);
else
fprintf (file, "\t%s\n\trestore\n", ret);
fputs ("\trestore\n\tretl\n\tadd\t%sp, %g1, %sp\n", file);
}
else if (current_function_calls_eh_return)
abort ();
/* All of the following cases are for leaf functions. */
/* If we wound up with things in our delay slot, flush them here. */
else if (current_function_epilogue_delay_list)
{
/* eligible_for_epilogue_delay_slot ensures that if this is a
leaf function, then we will only have insn in the delay slot
if the frame size is zero, thus no adjust for the stack is
needed here. */
if (actual_fsize != 0)
abort ();
fprintf (file, "\t%s\n", ret);
final_scan_insn (XEXP (current_function_epilogue_delay_list, 0),
file, 1, 0, 1);
rtx delay = PATTERN (XEXP (current_function_epilogue_delay_list, 0));
if (TARGET_V9 && ! epilogue_renumber (&delay, 1))
{
epilogue_renumber (&delay, 0);
fputs (SKIP_CALLERS_UNIMP_P
? "\treturn\t%i7+12\n"
: "\treturn\t%i7+8\n", file);
final_scan_insn (XEXP (current_function_epilogue_delay_list, 0),
file, 1, 0, 0);
}
else
{
rtx insn, src;
if (GET_CODE (delay) != SET)
abort();
src = SET_SRC (delay);
if (GET_CODE (src) == ASHIFT)
{
if (XEXP (src, 1) != const1_rtx)
abort();
SET_SRC (delay)
= gen_rtx_PLUS (GET_MODE (src), XEXP (src, 0),
XEXP (src, 0));
}
insn = gen_rtx_PARALLEL (VOIDmode,
gen_rtvec (2, delay,
gen_rtx_RETURN (VOIDmode)));
insn = emit_jump_insn (insn);
sparc_emitting_epilogue = true;
final_scan_insn (insn, file, 1, 0, 1);
sparc_emitting_epilogue = false;
}
}
/* Output 'nop' instead of 'sub %sp,-0,%sp' when no frame, so as to
avoid generating confusing assembly language output. */
else if (actual_fsize == 0)
fprintf (file, "\t%s\n\tnop\n", ret);
else if (actual_fsize <= 4096)
fprintf (file, "\t%s\n\tsub\t%%sp, -%d, %%sp\n", ret, actual_fsize);
else if (actual_fsize <= 8192)
fprintf (file, "\tsub\t%%sp, -4096, %%sp\n\t%s\n\tsub\t%%sp, -%d, %%sp\n",
ret, actual_fsize - 4096);
else if ((actual_fsize & 0x3ff) == 0)
fprintf (file, "\tsethi\t%%hi(%d), %%g1\n\t%s\n\tadd\t%%sp, %%g1, %%sp\n",
actual_fsize, ret);
else
fprintf (file, "\tsethi\t%%hi(%d), %%g1\n\tor\t%%g1, %%lo(%d), %%g1\n\t%s\n\tadd\t%%sp, %%g1, %%sp\n",
actual_fsize, actual_fsize, ret);
target_flags |= old_target_epilogue;
else if (TARGET_V9 && ! SKIP_CALLERS_UNIMP_P)
fputs ("\treturn\t%i7+8\n\tnop\n", file);
else
fprintf (file, "\t%s\n\trestore\n", ret);
}
/* All of the following cases are for leaf functions. */
else if (current_function_calls_eh_return)
abort ();
else if (current_function_epilogue_delay_list)
{
/* eligible_for_epilogue_delay_slot ensures that if this is a
leaf function, then we will only have insn in the delay slot
if the frame size is zero, thus no adjust for the stack is
needed here. */
if (actual_fsize != 0)
abort ();
fprintf (file, "\t%s\n", ret);
final_scan_insn (XEXP (current_function_epilogue_delay_list, 0),
file, 1, 0, 1);
}
/* Output 'nop' instead of 'sub %sp,-0,%sp' when no frame, so as to
avoid generating confusing assembly language output. */
else if (actual_fsize == 0)
fprintf (file, "\t%s\n\tnop\n", ret);
else if (actual_fsize <= 4096)
fprintf (file, "\t%s\n\tsub\t%%sp, -%d, %%sp\n", ret, actual_fsize);
else if (actual_fsize <= 8192)
fprintf (file, "\tsub\t%%sp, -4096, %%sp\n\t%s\n\tsub\t%%sp, -%d, %%sp\n",
ret, actual_fsize - 4096);
else if ((actual_fsize & 0x3ff) == 0)
fprintf (file, "\tsethi\t%%hi(%d), %%g1\n\t%s\n\tadd\t%%sp, %%g1, %%sp\n",
actual_fsize, ret);
else
fprintf (file, "\tsethi\t%%hi(%d), %%g1\n\tor\t%%g1, %%lo(%d), %%g1\n\t%s\n\tadd\t%%sp, %%g1, %%sp\n",
actual_fsize, actual_fsize, ret);
output_vectors:
sparc_output_deferred_case_vectors ();
@ -5699,87 +5665,6 @@ epilogue_renumber (where, test)
}
return 0;
}
/* Output assembler code to return from a function. */
const char *
output_return (operands)
rtx *operands;
{
rtx delay = final_sequence ? XVECEXP (final_sequence, 0, 1) : 0;
if (leaf_label)
{
operands[0] = leaf_label;
return "b%* %l0%(";
}
else if (current_function_uses_only_leaf_regs)
{
/* No delay slot in a leaf function. */
if (delay)
abort ();
/* If we didn't allocate a frame pointer for the current function,
the stack pointer might have been adjusted. Output code to
restore it now. */
operands[0] = GEN_INT (actual_fsize);
/* Use sub of negated value in first two cases instead of add to
allow actual_fsize == 4096. */
if (actual_fsize <= 4096)
{
if (SKIP_CALLERS_UNIMP_P)
return "jmp\t%%o7+12\n\tsub\t%%sp, -%0, %%sp";
else
return "retl\n\tsub\t%%sp, -%0, %%sp";
}
else if (actual_fsize <= 8192)
{
operands[0] = GEN_INT (actual_fsize - 4096);
if (SKIP_CALLERS_UNIMP_P)
return "sub\t%%sp, -4096, %%sp\n\tjmp\t%%o7+12\n\tsub\t%%sp, -%0, %%sp";
else
return "sub\t%%sp, -4096, %%sp\n\tretl\n\tsub\t%%sp, -%0, %%sp";
}
else if (SKIP_CALLERS_UNIMP_P)
{
if ((actual_fsize & 0x3ff) != 0)
return "sethi\t%%hi(%a0), %%g1\n\tor\t%%g1, %%lo(%a0), %%g1\n\tjmp\t%%o7+12\n\tadd\t%%sp, %%g1, %%sp";
else
return "sethi\t%%hi(%a0), %%g1\n\tjmp\t%%o7+12\n\tadd\t%%sp, %%g1, %%sp";
}
else
{
if ((actual_fsize & 0x3ff) != 0)
return "sethi\t%%hi(%a0), %%g1\n\tor\t%%g1, %%lo(%a0), %%g1\n\tretl\n\tadd\t%%sp, %%g1, %%sp";
else
return "sethi\t%%hi(%a0), %%g1\n\tretl\n\tadd\t%%sp, %%g1, %%sp";
}
}
else if (TARGET_V9)
{
if (delay)
{
epilogue_renumber (&SET_DEST (PATTERN (delay)), 0);
epilogue_renumber (&SET_SRC (PATTERN (delay)), 0);
}
if (SKIP_CALLERS_UNIMP_P)
return "return\t%%i7+12%#";
else
return "return\t%%i7+8%#";
}
else
{
if (delay)
abort ();
if (SKIP_CALLERS_UNIMP_P)
return "jmp\t%%i7+12\n\trestore";
else
return "ret\n\trestore";
}
}
/* Leaf functions and non-leaf functions have different needs. */
@ -8593,23 +8478,6 @@ sparc_v8plus_shift (operands, insn, opcode)
else
return strcat (asm_code, "\t%3, %2, %3\n\tsrlx\t%3, 32, %H0\n\tmov\t%3, %L0");
}
/* Return 1 if DEST and SRC reference only global and in registers. */
int
sparc_return_peephole_ok (dest, src)
rtx dest, src;
{
if (! TARGET_V9)
return 0;
if (current_function_uses_only_leaf_regs)
return 0;
if (GET_CODE (src) != CONST_INT
&& (GET_CODE (src) != REG || ! IN_OR_GLOBAL_P (src)))
return 0;
return IN_OR_GLOBAL_P (dest);
}
/* Output rtl to increment the profiler label LABELNO
for profiling a function entry. */
@ -8651,7 +8519,6 @@ sparc_add_gc_roots ()
{
ggc_add_rtx_root (&sparc_compare_op0, 1);
ggc_add_rtx_root (&sparc_compare_op1, 1);
ggc_add_rtx_root (&leaf_label, 1);
ggc_add_rtx_root (&global_offset_table, 1);
ggc_add_rtx_root (&get_pc_symbol, 1);
ggc_add_rtx_root (&sparc_addr_diff_list, 1);

11
gcc/config/sparc/sparc.h
View File

@ -387,11 +387,6 @@ extern int target_flags;
#define MASK_FPU 1
#define TARGET_FPU (target_flags & MASK_FPU)
/* Nonzero if we should use function_epilogue(). Otherwise, we
use fast return insns, but lose some generality. */
#define MASK_EPILOGUE 2
#define TARGET_EPILOGUE (target_flags & MASK_EPILOGUE)
/* Nonzero if we should assume that double pointers might be unaligned.
This can happen when linking gcc compiled code with other compilers,
because the ABI only guarantees 4 byte alignment. */
@ -535,10 +530,6 @@ extern int target_flags;
{"soft-float", -MASK_FPU, \
N_("Do not use hardware fp") }, \
{"soft-float", MASK_FPU_SET, NULL }, \
{"epilogue", MASK_EPILOGUE, \
N_("Use function_epilogue()") }, \
{"no-epilogue", -MASK_EPILOGUE, \
N_("Do not use function_epilogue()") }, \
{"unaligned-doubles", MASK_UNALIGNED_DOUBLES, \
N_("Assume possible double misalignment") }, \
{"no-unaligned-doubles", -MASK_UNALIGNED_DOUBLES, \
@ -607,7 +598,7 @@ extern int target_flags;
/* 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). */
#define TARGET_DEFAULT (MASK_APP_REGS + MASK_EPILOGUE + MASK_FPU)
#define TARGET_DEFAULT (MASK_APP_REGS + MASK_FPU)
/* This is meant to be redefined in target specific files. */
#define SUBTARGET_SWITCHES

47
gcc/config/sparc/sparc.md
View File

@ -8744,21 +8744,6 @@
[(set_attr "type" "multi")
(set_attr "length" "3")])
(define_insn "return"
[(return)
(use (reg:SI 31))]
"! TARGET_EPILOGUE"
"* return output_return (operands);"
[(set_attr "type" "return")])
(define_peephole
[(set (match_operand:SI 0 "register_operand" "=r")
(match_operand:SI 1 "arith_operand" "rI"))
(parallel [(return)
(use (reg:SI 31))])]
"sparc_return_peephole_ok (operands[0], operands[1])"
"return\\t%%i7+8\\n\\tmov\\t%Y1, %Y0")
(define_insn "nop"
[(const_int 0)]
""
@ -9155,14 +9140,14 @@
(compare:CC (match_dup 1) (const_int 0)))])]
"")
;; Return peepholes. First the "normal" ones.
;; These are necessary to catch insns ending up in the epilogue delay list.
;; Return peepholes. These are generated by sparc_nonflat_function_epilogue
;; who then immediately calls final_scan_insn.
(define_insn "*return_qi"
[(set (match_operand:QI 0 "restore_operand" "")
(match_operand:QI 1 "arith_operand" "rI"))
(return)]
"! TARGET_EPILOGUE"
"sparc_emitting_epilogue"
"*
{
if (! TARGET_ARCH64 && current_function_returns_struct)
@ -9180,7 +9165,7 @@
[(set (match_operand:HI 0 "restore_operand" "")
(match_operand:HI 1 "arith_operand" "rI"))
(return)]
"! TARGET_EPILOGUE"
"sparc_emitting_epilogue"
"*
{
if (! TARGET_ARCH64 && current_function_returns_struct)
@ -9198,7 +9183,7 @@
[(set (match_operand:SI 0 "restore_operand" "")
(match_operand:SI 1 "arith_operand" "rI"))
(return)]
"! TARGET_EPILOGUE"
"sparc_emitting_epilogue"
"*
{
if (! TARGET_ARCH64 && current_function_returns_struct)
@ -9212,15 +9197,11 @@
[(set_attr "type" "multi")
(set_attr "length" "2")])
;; The following pattern is only generated by delayed-branch scheduling,
;; when the insn winds up in the epilogue. This can happen not only when
;; ! TARGET_FPU because we move complex types around by parts using
;; SF mode SUBREGs.
(define_insn "*return_sf_no_fpu"
[(set (match_operand:SF 0 "restore_operand" "=r")
(match_operand:SF 1 "register_operand" "r"))
(return)]
"! TARGET_EPILOGUE"
"sparc_emitting_epilogue"
"*
{
if (! TARGET_ARCH64 && current_function_returns_struct)
@ -9237,7 +9218,7 @@
[(set (match_operand:DF 0 "restore_operand" "=r")
(match_operand:DF 1 "register_operand" "r"))
(return)]
"! TARGET_EPILOGUE && TARGET_ARCH64"
"sparc_emitting_epilogue && TARGET_ARCH64"
"*
{
if (IN_OR_GLOBAL_P (operands[1]))
@ -9253,7 +9234,7 @@
(plus:SI (match_operand:SI 1 "register_operand" "r")
(match_operand:SI 2 "arith_operand" "rI")))
(return)]
"! TARGET_EPILOGUE"
"sparc_emitting_epilogue"
"*
{
if (! TARGET_ARCH64 && current_function_returns_struct)
@ -9274,7 +9255,7 @@
(lo_sum:SI (match_operand:SI 1 "register_operand" "r")
(match_operand:SI 2 "immediate_operand" "in")))
(return)]
"! TARGET_EPILOGUE && ! TARGET_CM_MEDMID"
"sparc_emitting_epilogue && ! TARGET_CM_MEDMID"
"*
{
if (! TARGET_ARCH64 && current_function_returns_struct)
@ -9292,7 +9273,7 @@
[(set (match_operand:DI 0 "restore_operand" "")
(match_operand:DI 1 "arith_double_operand" "rHI"))
(return)]
"TARGET_ARCH64 && ! TARGET_EPILOGUE"
"sparc_emitting_epilogue && TARGET_ARCH64"
"ret\;restore %%g0, %1, %Y0"
[(set_attr "type" "multi")
(set_attr "length" "2")])
@ -9302,7 +9283,7 @@
(plus:DI (match_operand:DI 1 "arith_operand" "%r")
(match_operand:DI 2 "arith_double_operand" "rHI")))
(return)]
"TARGET_ARCH64 && ! TARGET_EPILOGUE"
"sparc_emitting_epilogue && TARGET_ARCH64"
"ret\;restore %r1, %2, %Y0"
[(set_attr "type" "multi")
(set_attr "length" "2")])
@ -9312,18 +9293,16 @@
(lo_sum:DI (match_operand:DI 1 "arith_operand" "%r")
(match_operand:DI 2 "immediate_operand" "in")))
(return)]
"TARGET_ARCH64 && ! TARGET_EPILOGUE && ! TARGET_CM_MEDMID"
"sparc_emitting_epilogue && TARGET_ARCH64 && ! TARGET_CM_MEDMID"
"ret\;restore %r1, %%lo(%a2), %Y0"
[(set_attr "type" "multi")
(set_attr "length" "2")])
;; The following pattern is only generated by delayed-branch scheduling,
;; when the insn winds up in the epilogue.
(define_insn "*return_sf"
[(set (reg:SF 32)
(match_operand:SF 0 "register_operand" "f"))
(return)]
"! TARGET_EPILOGUE"
"sparc_emitting_epilogue"
"ret\;fmovs\\t%0, %%f0"
[(set_attr "type" "multi")
(set_attr "length" "2")])

2
gcc/config/sparc/splet.h
View File

@ -20,7 +20,7 @@ the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#undef TARGET_DEFAULT
#define TARGET_DEFAULT (MASK_APP_REGS + MASK_EPILOGUE)
#define TARGET_DEFAULT MASK_APP_REGS
#define CPP_PREDEFINES "-Dsparc -Acpu=sparc -Amachine=sparc"

2
gcc/config/sparc/vxsparc64.h
View File

@ -71,7 +71,7 @@ Boston, MA 02111-1307, USA. */
#define CPP_SPEC "%(cpp_cpu) %(cpp_arch) -DCPU=ULTRASPARC -D__CPU__=CPU"
#undef TARGET_DEFAULT
#define TARGET_DEFAULT (MASK_APP_REGS | MASK_EPILOGUE | MASK_FPU \
#define TARGET_DEFAULT (MASK_APP_REGS | MASK_FPU \
| MASK_LONG_DOUBLE_128 | MASK_64BIT)
#undef SPARC_DEFAULT_CMODEL

16
gcc/doc/invoke.texi
View File

@ -349,10 +349,10 @@ in the following sections.
-mcmodel=@var{code-model} @gol
-m32 -m64 @gol
-mapp-regs -mbroken-saverestore -mcypress @gol
-mepilogue -mfaster-structs -mflat @gol
-mfaster-structs -mflat @gol
-mfpu -mhard-float -mhard-quad-float @gol
-mimpure-text -mlive-g0 -mno-app-regs @gol
-mno-epilogue -mno-faster-structs -mno-flat -mno-fpu @gol
-mno-faster-structs -mno-flat -mno-fpu @gol
-mno-impure-text -mno-stack-bias -mno-unaligned-doubles @gol
-msoft-float -msoft-quad-float -msparclite -mstack-bias @gol
-msupersparc -munaligned-doubles -mv8}
@ -5164,18 +5164,6 @@ emulates the effect of the instruction. Because of the trap handler overhead,
this is much slower than calling the ABI library routines. Thus the
@option{-msoft-quad-float} option is the default.
@item -mno-epilogue
@itemx -mepilogue
@opindex mno-epilogue
@opindex mepilogue
With @option{-mepilogue} (the default), the compiler always emits code for
function exit at the end of each function. Any function exit in
the middle of the function (such as a return statement in C) will
generate a jump to the exit code at the end of the function.
With @option{-mno-epilogue}, the compiler tries to emit exit code inline
at every function exit.
@item -mno-flat
@itemx -mflat
@opindex mno-flat