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| author | Roger Sayle <roger@eyesopen.com> | 2003-08-12 01:43:31 +0000 |
|---|---|---|
| committer | Roger Sayle <sayle@gcc.gnu.org> | 2003-08-12 01:43:31 +0000 |
| commit | af7b5c1c00a3ee89369358ef8a53f4b4b74bbbf9 (patch) | |
| tree | 903143e6aa6edea240dc58d6e7bffe3a4e4efee4 | |
| parent | e3bf220a4651c57a992496ece0e6b96cf2d1bc82 (diff) | |
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fold-const.c (fold): Optimize any associative floating point operator with...
* fold-const.c (fold): Optimize any associative floating point
operator with -funsafe-math-optimizations, not just MULT_EXPR.
From-SVN: r70348
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/fold-const.c | 8 |
2 files changed, 8 insertions, 5 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 959f77d..39d3f20 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2003-08-11 Roger Sayle <roger@eyesopen.com> + + * fold-const.c (fold): Optimize any associative floating point + operator with -funsafe-math-optimizations, not just MULT_EXPR. + 2003-08-11 Kaz Kojima <kkojima@gcc.gnu.org> * config/sh/lib1funcs.asm (__udivdi3): Add .type and .size diff --git a/gcc/fold-const.c b/gcc/fold-const.c index 9333c59..9db9f2e 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -5803,13 +5803,11 @@ fold (tree expr) associate: /* In most languages, can't associate operations on floats through parentheses. Rather than remember where the parentheses were, we - don't associate floats at all. It shouldn't matter much. However, - associating multiplications is only very slightly inaccurate, so do - that if -funsafe-math-optimizations is specified. */ + don't associate floats at all, unless the user has specified + -funsafe-math-optimizations. */ if (! wins - && (! FLOAT_TYPE_P (type) - || (flag_unsafe_math_optimizations && code == MULT_EXPR))) + && (! FLOAT_TYPE_P (type) || flag_unsafe_math_optimizations)) { tree var0, con0, lit0, minus_lit0; tree var1, con1, lit1, minus_lit1; |