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| author | James Van Artsdalen <jrv@gnu.org> | 1993-03-22 07:42:38 +0000 |
|---|---|---|
| committer | James Van Artsdalen <jrv@gnu.org> | 1993-03-22 07:42:38 +0000 |
| commit | d398b3b1338cccbc2861959d2eef8515af9cf6c3 (patch) | |
| tree | ebe9ea91e048736441872250eac04c8560120954 /gcc | |
| parent | 5e82e7bddbb58ea12883ecbe66f74137b076d676 (diff) | |
| download | gcc-d398b3b1338cccbc2861959d2eef8515af9cf6c3.zip gcc-d398b3b1338cccbc2861959d2eef8515af9cf6c3.tar.gz gcc-d398b3b1338cccbc2861959d2eef8515af9cf6c3.tar.bz2 | |
(PREFERRED_RELOAD_CLASS): Only narrow MODE_FLOAT reloads from ALL_REGS to GENERAL_REGS.
(PREFERRED_RELOAD_CLASS): Only narrow MODE_FLOAT reloads from ALL_REGS to
GENERAL_REGS.
(PREFERRED_OUTPUT_RELOAD_CLASS): Deleted.
(INIT_EXPANDERS): New macro.
From-SVN: r3828
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/config/i386/i386.h | 22 |
1 files changed, 12 insertions, 10 deletions
diff --git a/gcc/config/i386/i386.h b/gcc/config/i386/i386.h index fff1aab..f6d2bee 100644 --- a/gcc/config/i386/i386.h +++ b/gcc/config/i386/i386.h @@ -529,21 +529,16 @@ extern enum reg_class regclass_map[FIRST_PSEUDO_REGISTER]; reloaded into floating registers (since no move-insn can do that) and we ensure that QImodes aren't reloaded into the esi or edi reg. */ -/* Don't put float CONST_DOUBLE into fp regs. +/* Put float CONST_DOUBLE in the constant pool instead of fp regs. QImode must go into class Q_REGS. - MODE_INT must not go into FLOAT_REGS. */ + Narrow ALL_REGS to GENERAL_REGS. This supports allowing movsf and + movdf to do mem-to-mem moves through integer regs. */ #define PREFERRED_RELOAD_CLASS(X,CLASS) \ (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) != VOIDmode ? NO_REGS \ : GET_MODE (X) == QImode && ! reg_class_subset_p (CLASS, Q_REGS) ? Q_REGS \ - : (FLOAT_CLASS_P (CLASS) \ - && (GET_MODE (X) == VOIDmode \ - || GET_MODE_CLASS (GET_MODE (X)) == MODE_INT)) ? GENERAL_REGS \ - : (CLASS) == ALL_REGS ? GENERAL_REGS \ - : (CLASS)) - -#define PREFERRED_OUTPUT_RELOAD_CLASS(X,CLASS) \ - ((CLASS) == ALL_REGS ? GENERAL_REGS \ + : ((CLASS) == ALL_REGS \ + && GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT) ? GENERAL_REGS \ : (CLASS)) /* If we are copying between general and FP registers, we need a memory @@ -1090,6 +1085,13 @@ do \ } \ } \ while (0) + +/* Initialize data used by insn expanders. This is called from + init_emit, once for each function, before code is generated. + For 386, clear stack slot assignments remembered from previous + functions. */ + +#define INIT_EXPANDERS clear_386_stack_locals () /* Specify the machine mode that this machine uses for the index in the tablejump instruction. */ |