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| author | law <law@138bc75d-0d04-0410-961f-82ee72b054a4> | 2000-02-11 19:35:57 +0000 |
|---|---|---|
| committer | law <law@138bc75d-0d04-0410-961f-82ee72b054a4> | 2000-02-11 19:35:57 +0000 |
| commit | 3cc4218a4239d4c95cdcbb19082c73a5b125f4aa (patch) | |
| tree | 4f7c1de9d41848cde64412c8651f3224743ee4d4 /gcc/jump.c | |
| parent | ffb6162735a81d82e931314fe2bde06d9ea4a94e (diff) | |
| download | gcc-3cc4218a4239d4c95cdcbb19082c73a5b125f4aa.tar.gz | |
* jump.c (jump_optimize_1): The first operand in a relational
can be a CONST_INT.
* optabs.c (emit_conditional_move): Handle relationals which
have a known true/false result.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@31929 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/jump.c')
| -rw-r--r-- | gcc/jump.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/gcc/jump.c b/gcc/jump.c index fcabc27d349..d816b126ac4 100644 --- a/gcc/jump.c +++ b/gcc/jump.c @@ -1305,10 +1305,16 @@ jump_optimize_1 (f, cross_jump, noop_moves, after_regscan, mark_labels_only) insn? After all, we're going to delete it. We'd have to modify emit_conditional_move to take a comparison rtx instead or write a new function. */ - cond0 = gen_reg_rtx (GET_MODE (XEXP (temp4, 0))); + /* We want the target to be able to simplify comparisons with zero (and maybe other constants as well), so don't create pseudos for them. There's no need to either. */ + if (GET_CODE (XEXP (temp4, 0)) == CONST_INT + || GET_CODE (XEXP (temp4, 0)) == CONST_DOUBLE) + cond0 = XEXP (temp4, 0); + else + cond0 = gen_reg_rtx (GET_MODE (XEXP (temp4, 0))); + if (GET_CODE (XEXP (temp4, 1)) == CONST_INT || GET_CODE (XEXP (temp4, 1)) == CONST_DOUBLE) cond1 = XEXP (temp4, 1); |