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| author | Roger Sayle <roger@eyesopen.com> | 2006-02-25 22:29:48 +0000 |
|---|---|---|
| committer | Roger Sayle <sayle@gcc.gnu.org> | 2006-02-25 22:29:48 +0000 |
| commit | 5484a3c37c1df1cbc23980a1ce5f9f2a033bf632 (patch) | |
| tree | 3639946e27528ed722acbb12268a53cb71913145 /gcc/ChangeLog | |
| parent | eb8dffe0fbff242efc573fba9eff7a1da7eb893f (diff) | |
| download | gcc-5484a3c37c1df1cbc23980a1ce5f9f2a033bf632.zip gcc-5484a3c37c1df1cbc23980a1ce5f9f2a033bf632.tar.gz gcc-5484a3c37c1df1cbc23980a1ce5f9f2a033bf632.tar.bz2 | |
simplify-rtx.c (simplify_relational_operation_1): Simplify (X^Y) == 0 as X == Y and (X^Y) != 0 as X != Y.
* simplify-rtx.c (simplify_relational_operation_1): Simplify
(X^Y) == 0 as X == Y and (X^Y) != 0 as X != Y. Simplify (X^Y) == Y
as X == 0, and some symmetry related transformations.
Simplify (X^C1) == C2 as X == (C1^C2). Split long comment line.
From-SVN: r111443
Diffstat (limited to 'gcc/ChangeLog')
| -rw-r--r-- | gcc/ChangeLog | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index b2abdce..526af5d 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,12 @@ 2006-02-25 Roger Sayle <roger@eyesopen.com> + * simplify-rtx.c (simplify_relational_operation_1): Simplify + (X^Y) == 0 as X == Y and (X^Y) != 0 as X != Y. Simplify (X^Y) == Y + as X == 0, and some symmetry related transformations. + Simplify (X^C1) == C2 as X == (C1^C2). Split long comment line. + +2006-02-25 Roger Sayle <roger@eyesopen.com> + PR middle-end/23673 * fold-const.c (fold_binary) <EQ_EXPR>: Fold (X^Y) == 0 as X == Y and (X^Y) != 0 as X != Y. Fold (X^Y) == Y as X == 0, and some |