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i386.h (VALID_FP_MODE_P, [...]): New.

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* i386.h (VALID_FP_MODE_P, VALID_INT_MODE_P): New.
	(HARD_REGNO_MODE_OK): Move offline to ....
	* i386.c (ix86_hard_regno_mode_ok) ... here;
	refuse all incorrect modes.
	* i386-protos.h (ix86_hard_regno_mode_ok): Declare.

From-SVN: r39621
This commit is contained in:
Jan Hubicka 2001-02-13 10:05:56 +00:00 committed by Jan Hubicka
parent 1b9ea8eb1a
commit a946dd0074
5 changed files with 54 additions and 21 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,11 @@
Die Feb 13 11:04:25 CET 2001 Jan Hubicka <jh@suse.cz>
* i386.h (VALID_FP_MODE_P, VALID_INT_MODE_P): New.
(HARD_REGNO_MODE_OK): Move offline to ....
* i386.c (ix86_hard_regno_mode_ok) ... here;
refuse all incorrect modes.
* i386-protos.h (ix86_hard_regno_mode_ok): Declare.
2001-02-13 Richard Henderson <rth@redhat.com>
* sparc.md (cmp_cc_arith_op_set): Don't use match_dup on the

1
gcc/config/i386/i386-protos.h
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@ -131,6 +131,7 @@ extern enum machine_mode ix86_fp_compare_mode PARAMS ((enum rtx_code));
extern rtx ix86_force_to_memory PARAMS ((enum machine_mode, rtx));
extern void ix86_free_from_memory PARAMS ((enum machine_mode));
extern void ix86_split_fp_branch PARAMS ((rtx, rtx, rtx, rtx, rtx, rtx));
extern int ix86_hard_regno_mode_ok PARAMS ((int, enum machine_mode));
#ifdef TREE_CODE
extern void init_cumulative_args PARAMS ((CUMULATIVE_ARGS *, tree, rtx));

30
gcc/config/i386/i386.c
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@ -8724,3 +8724,33 @@ ix86_free_from_memory (mode)
? 2
: 4))));
}
/* Return 1 if hard register REGNO can hold a value of machine-mode MODE. */
int
ix86_hard_regno_mode_ok (regno, mode)
int regno;
enum machine_mode mode;
{
/* Flags and only flags can only hold CCmode values. */
if (CC_REGNO_P (regno))
return GET_MODE_CLASS (mode) == MODE_CC;
if (GET_MODE_CLASS (mode) == MODE_CC
|| GET_MODE_CLASS (mode) == MODE_RANDOM
|| GET_MODE_CLASS (mode) == MODE_PARTIAL_INT)
return 0;
if (FP_REGNO_P (regno))
return VALID_FP_MODE_P (mode);
if (SSE_REGNO_P (regno))
return VALID_SSE_REG_MODE (mode);
if (MMX_REGNO_P (regno))
return VALID_MMX_REG_MODE (mode);
/* We handle both integer and floats in the general purpose registers.
In future we should be able to handle vector modes as well. */
if (!VALID_INT_MODE_P (mode) && !VALID_FP_MODE_P (mode))
return 0;
/* Take care for QImode values - they can be in non-QI regs, but then
they do cause partial register stalls. */
if (QI_REG_P (regno) || mode != QImode)
return 1;
return reload_in_progress || reload_completed || !TARGET_PARTIAL_REG_STALL;
}

34
gcc/config/i386/i386.h
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@ -775,28 +775,22 @@ extern int ix86_arch;
(VALID_SSE_REG_MODE (MODE) && TARGET_SSE ? 1 \
: VALID_MMX_REG_MODE (MODE) && TARGET_MMX ? 1 : 0)
#define VALID_FP_MODE_P(mode) \
((mode) == SFmode || (mode) == DFmode || (mode) == TFmode \
|| (mode) == XFmode \
|| (mode) == SCmode || (mode) == DCmode || (mode) == TCmode\
|| (mode) == XCmode)
#define VALID_INT_MODE_P(mode) \
((mode) == QImode || (mode) == HImode || (mode) == SImode \
|| (mode) == DImode \
|| (mode) == CQImode || (mode) == CHImode || (mode) == CSImode \
|| (mode) == CDImode)
/* Value is 1 if hard register REGNO can hold a value of machine-mode MODE. */
#define HARD_REGNO_MODE_OK(REGNO, MODE) \
/* Flags and only flags can only hold CCmode values. */ \
(CC_REGNO_P (REGNO) \
? GET_MODE_CLASS (MODE) == MODE_CC \
: GET_MODE_CLASS (MODE) == MODE_CC ? 0 \
/* FP regs can only hold floating point; make it clear they \
cannot hold TFmode floats. */ \
: FP_REGNO_P (REGNO) \
? ((GET_MODE_CLASS (MODE) == MODE_FLOAT \
|| GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT) \
&& GET_MODE_UNIT_SIZE (MODE) <= 16)\
: SSE_REGNO_P (REGNO) ? VALID_SSE_REG_MODE (MODE) \
: MMX_REGNO_P (REGNO) ? VALID_MMX_REG_MODE (MODE) \
/* Only SSE and MMX regs can hold vector modes. */ \
: VECTOR_MODE_P (MODE) || (MODE) == TImode ? 0 \
: (REGNO) < 4 ? 1 \
/* Other regs cannot do byte accesses. */ \
: (MODE) != QImode ? 1 \
: reload_in_progress || reload_completed \
|| !TARGET_PARTIAL_REG_STALL)
#define HARD_REGNO_MODE_OK(REGNO, MODE) \
ix86_hard_regno_mode_ok (REGNO, MODE)
/* Value is 1 if it is a good idea to tie two pseudo registers
when one has mode MODE1 and one has mode MODE2.

2
gcc/configure vendored
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@ -1571,7 +1571,7 @@ esac
# Find some useful tools
for ac_prog in gawk mawk nawk awk
for ac_prog in mawk gawk nawk awk
do
# Extract the first word of "$ac_prog", so it can be a program name with args.
set dummy $ac_prog; ac_word=$2