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fold-const.c (fold): Fix thinko when optimizing comparisons against -0.0.

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* fold-const.c (fold): Fix thinko when optimizing comparisons
        against -0.0.

From-SVN: r30282
This commit is contained in:
Jeffrey A Law 1999-10-31 04:22:46 +00:00 committed by Jeff Law
parent f6e8b583c4
commit 0d19c2a139
2 changed files with 7 additions and 1 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
Sat Oct 30 22:19:26 1999 Jeffrey A Law (law@cygnus.com)
* fold-const.c (fold): Fix thinko when optimizing comparisons
against -0.0.
Sat Oct 30 21:32:17 1999 David Starner <dstarner98@aasaa.ofe.org> Sat Oct 30 21:32:17 1999 David Starner <dstarner98@aasaa.ofe.org>
* gcc.texi (Passes): Update front-end files to their current * gcc.texi (Passes): Update front-end files to their current

3
gcc/fold-const.c
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@ -5751,7 +5751,8 @@ fold (expr)
REAL_VALUE_NEGATE (TREE_REAL_CST (arg1))))); REAL_VALUE_NEGATE (TREE_REAL_CST (arg1)))));
/* IEEE doesn't distinguish +0 and -0 in comparisons. */ /* IEEE doesn't distinguish +0 and -0 in comparisons. */
/* a CMP (-0) -> a CMP 0 */ /* a CMP (-0) -> a CMP 0 */
if (REAL_VALUE_MINUS_ZERO (TREE_REAL_CST (arg1))) if (TREE_CODE (arg1) == REAL_CST
&& REAL_VALUE_MINUS_ZERO (TREE_REAL_CST (arg1)))
return fold (build (code, type, arg0, return fold (build (code, type, arg0,
build_real (TREE_TYPE (arg1), dconst0))); build_real (TREE_TYPE (arg1), dconst0)));
} }