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| author | Paul Eggert <eggert@twinsun.com> | 1997-11-14 00:07:27 +0000 |
|---|---|---|
| committer | Jim Wilson <wilson@gcc.gnu.org> | 1997-11-13 16:07:27 -0800 |
| commit | 41c9120baf04bf432d39a11298f2550292581922 (patch) | |
| tree | 1ed9b899bbe18e155415baaf3f9f4beafd425fb0 /gcc/varasm.c | |
| parent | 323d8e7b661297d87002730d2e3f55bca134baaf (diff) | |
| download | gcc-41c9120baf04bf432d39a11298f2550292581922.zip gcc-41c9120baf04bf432d39a11298f2550292581922.tar.gz gcc-41c9120baf04bf432d39a11298f2550292581922.tar.bz2 | |
patch from paul eggert to fix -0.0/0.0 confusion that breaks glibc
* real.h (REAL_VALUES_IDENTICAL): New macro.
* expr.c (is_zeros_p): Don't consider -0.0 to be all zeros.
* fold-const.c (operand_equal_p): Don't consider -0.0 to be
identical to 0.0.
* tree.c (simple_cst_equal): Don't consider -0.0 to have the
same tree structure as 0.0.
* varasm.c (immed_real_const_1): Use new REAL_VALUES_IDENTICAL
macro instead of doing it by hand.
From-SVN: r16472
Diffstat (limited to 'gcc/varasm.c')
| -rw-r--r-- | gcc/varasm.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/gcc/varasm.c b/gcc/varasm.c index 1161837..ab88beb 100644 --- a/gcc/varasm.c +++ b/gcc/varasm.c @@ -2245,8 +2245,7 @@ immed_real_const_1 (d, mode) /* Detect special cases. */ - /* Avoid REAL_VALUES_EQUAL here in order to distinguish minus zero. */ - if (!bcmp ((char *) &dconst0, (char *) &d, sizeof d)) + if (REAL_VALUES_IDENTICAL (dconst0, d)) return CONST0_RTX (mode); /* Check for NaN first, because some ports (specifically the i386) do not emit correct ieee-fp code by default, and thus will generate a core |