diff options
| author | Jakub Jelinek <jakub@redhat.com> | 2000-09-11 22:20:32 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2000-09-11 22:20:32 +0200 |
| commit | 6ff85fd82d366db03289da8f6b47e202eb4eee7b (patch) | |
| tree | 90cccff7b1e490cd93a4558a51852a30f3faaae4 | |
| parent | 4102c782e32436af07666c512e1fbf2a3404cc18 (diff) | |
| download | gcc-6ff85fd82d366db03289da8f6b47e202eb4eee7b.zip gcc-6ff85fd82d366db03289da8f6b47e202eb4eee7b.tar.gz gcc-6ff85fd82d366db03289da8f6b47e202eb4eee7b.tar.bz2 | |
combine.c (simplify_if_then_else): Don't convert a == b ? b ...
* combine.c (simplify_if_then_else): Don't convert a == b ? b : a
to a if the comparison is floating mode and not -ffast-math.
* simplify-rtx.c (simplify_ternary_operation): Likewise.
From-SVN: r36326
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/combine.c | 2 | ||||
| -rw-r--r-- | gcc/simplify-rtx.c | 2 |
3 files changed, 10 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 0aa4fd4..dd8593e 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2000-09-11 Jakub Jelinek <jakub@redhat.com> + + * combine.c (simplify_if_then_else): Don't convert a == b ? b : a + to a if the comparison is floating mode and not -ffast-math. + * simplify-rtx.c (simplify_ternary_operation): Likewise. + Mon Sep 11 20:07:48 2000 J"orn Rennecke <amylaar@redhat.co.uk> * sh.h (INITIALIZE_TRAMPOLINE): Remove stray call to diff --git a/gcc/combine.c b/gcc/combine.c index 053b420..478aab2 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -4703,10 +4703,12 @@ simplify_if_then_else (x) /* Convert a == b ? b : a to "a". */ if (true_code == EQ && ! side_effects_p (cond) + && (! FLOAT_MODE_P (mode) || flag_fast_math) && rtx_equal_p (XEXP (cond, 0), false) && rtx_equal_p (XEXP (cond, 1), true)) return false; else if (true_code == NE && ! side_effects_p (cond) + && (! FLOAT_MODE_P (mode) || flag_fast_math) && rtx_equal_p (XEXP (cond, 0), true) && rtx_equal_p (XEXP (cond, 1), false)) return true; diff --git a/gcc/simplify-rtx.c b/gcc/simplify-rtx.c index 701b7ba..0091d72 100644 --- a/gcc/simplify-rtx.c +++ b/gcc/simplify-rtx.c @@ -1976,10 +1976,12 @@ simplify_ternary_operation (code, mode, op0_mode, op0, op1, op2) /* Convert a == b ? b : a to "a". */ if (GET_CODE (op0) == NE && ! side_effects_p (op0) + && (! FLOAT_MODE_P (mode) || flag_fast_math) && rtx_equal_p (XEXP (op0, 0), op1) && rtx_equal_p (XEXP (op0, 1), op2)) return op1; else if (GET_CODE (op0) == EQ && ! side_effects_p (op0) + && (! FLOAT_MODE_P (mode) || flag_fast_math) && rtx_equal_p (XEXP (op0, 1), op1) && rtx_equal_p (XEXP (op0, 0), op2)) return op2; |