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| author | Roger Sayle <roger@eyesopen.com> | 2005-01-21 17:54:26 +0000 |
|---|---|---|
| committer | Roger Sayle <sayle@gcc.gnu.org> | 2005-01-21 17:54:26 +0000 |
| commit | d284eb28eb6f3ef8c3f27e7428b8cdc8e51d965f (patch) | |
| tree | 87965b49d99f08cdf39d5e6360e95fccbda397a3 /gcc/real.h | |
| parent | a101957b98129887878b4e98830147e49fa4f655 (diff) | |
| download | gcc-d284eb28eb6f3ef8c3f27e7428b8cdc8e51d965f.zip gcc-d284eb28eb6f3ef8c3f27e7428b8cdc8e51d965f.tar.gz gcc-d284eb28eb6f3ef8c3f27e7428b8cdc8e51d965f.tar.bz2 | |
re PR rtl-optimization/576 (gcc performs invalid optimization with float operations when different rounding mode.)
PR rtl-optimization/576
* real.c (real_arithmetic): Change return type from void to bool
to return an indication that the result may be inexact.
* real.h (real_arithmeric): Update prototype.
* fold-const.c (const_binop): Don't constant fold floating
point expressions when the user specifies -frounding-math and
the result may depend upon the run-time rounding mode.
(fold_convert_const_real_from_real): Clean-up.
(fold_initializer): Ignore flag_rounding_math for initializers.
* simplify-rtx.c (simplify_binary_operation): Likewise, don't
constant fold FP operations with flag_rounding_math if the
result may depend upon the run-time rounding mode.
From-SVN: r94020
Diffstat (limited to 'gcc/real.h')
| -rw-r--r-- | gcc/real.h | 2 |
1 files changed, 1 insertions, 1 deletions
@@ -160,7 +160,7 @@ extern const struct real_format * /* Declare functions in real.c. */ /* Binary or unary arithmetic on tree_code. */ -extern void real_arithmetic (REAL_VALUE_TYPE *, int, const REAL_VALUE_TYPE *, +extern bool real_arithmetic (REAL_VALUE_TYPE *, int, const REAL_VALUE_TYPE *, const REAL_VALUE_TYPE *); /* Compare reals by tree_code. */ |