diff options
| author | law <law@138bc75d-0d04-0410-961f-82ee72b054a4> | 1998-05-31 15:13:36 +0000 |
|---|---|---|
| committer | law <law@138bc75d-0d04-0410-961f-82ee72b054a4> | 1998-05-31 15:13:36 +0000 |
| commit | a69791114b5f3f5e750145d5b06955757c0a7868 (patch) | |
| tree | 0c1c29104eec694d1022f9b5a1440651674fc445 /gcc/reload.c | |
| parent | 2b32c30c62908c0c0f8294046ae23d86924efe50 (diff) | |
| download | gcc-a69791114b5f3f5e750145d5b06955757c0a7868.tar.gz | |
* reload.c (find_reloads): Record the existing mode if
operand_mode == VOIDmode before replacing a register with
a constant.
* i386.md (tstsi, tsthi, tstqi, tstsf, tstdf, tstxf): Set
i386_compare_op1 to const0_rtx for the benefit of the
conditional move patterns.
(movsicc, movhicc, movsfcc, movdfcc, movxfcc, movdicc): Rewrite
based on suggestions from Jim Wilson.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@20151 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/reload.c')
| -rw-r--r-- | gcc/reload.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/gcc/reload.c b/gcc/reload.c index 694c23601b6..1604a7b0ba0 100644 --- a/gcc/reload.c +++ b/gcc/reload.c @@ -2641,8 +2641,16 @@ find_reloads (insn, replace, ind_levels, live_known, reload_reg_p) register int regno = REGNO (recog_operand[i]); if (reg_equiv_constant[regno] != 0 && (set == 0 || &SET_DEST (set) != recog_operand_loc[i])) - substed_operand[i] = recog_operand[i] - = reg_equiv_constant[regno]; + { + /* Record the existing mode so that the check if constants are + allowed will work when operand_mode isn't specified. */ + + if (operand_mode[i] == VOIDmode) + operand_mode[i] = GET_MODE (recog_operand[i]); + + substed_operand[i] = recog_operand[i] + = reg_equiv_constant[regno]; + } #if 0 /* This might screw code in reload1.c to delete prior output-reload that feeds this insn. */ if (reg_equiv_mem[regno] != 0) |