diff options
| author | Jeffrey A Law <law@cygnus.com> | 2001-12-10 22:52:26 +0000 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 2001-12-10 15:52:26 -0700 |
| commit | 805f169411c36a862b57cc888038b03424dbfb0c (patch) | |
| tree | 62b2bc534406191558e8d82da9b25d635b405911 /gcc/combine.c | |
| parent | 9aaceb4b3e161bc4ce5d2265bf6d3a95d1e62d66 (diff) | |
| download | gcc-805f169411c36a862b57cc888038b03424dbfb0c.zip gcc-805f169411c36a862b57cc888038b03424dbfb0c.tar.gz gcc-805f169411c36a862b57cc888038b03424dbfb0c.tar.bz2 | |
combine.c (known_cond): Check mode of each operand to determine if COND is comparing floating point values.
* combine.c (known_cond): Check mode of each operand to determine
if COND is comparing floating point values.
From-SVN: r47855
Diffstat (limited to 'gcc/combine.c')
| -rw-r--r-- | gcc/combine.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/gcc/combine.c b/gcc/combine.c index ee27919..0e15def 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -7351,8 +7351,14 @@ known_cond (x, cond, reg, val) if (side_effects_p (x)) return x; - if (cond == EQ && rtx_equal_p (x, reg) && !FLOAT_MODE_P (cond)) + /* If either operand of the condition is a floating point value, + then we have to avoid collapsing an EQ comparison. */ + if (cond == EQ + && rtx_equal_p (x, reg) + && ! FLOAT_MODE_P (GET_MODE (x)) + && ! FLOAT_MODE_P (GET_MODE (val))) return val; + if (cond == UNEQ && rtx_equal_p (x, reg)) return val; |