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| author | sayle <sayle@138bc75d-0d04-0410-961f-82ee72b054a4> | 2003-09-18 19:07:04 +0000 |
|---|---|---|
| committer | sayle <sayle@138bc75d-0d04-0410-961f-82ee72b054a4> | 2003-09-18 19:07:04 +0000 |
| commit | dffad8ccd03aedb0df07dea9b37c61da86c5b49c (patch) | |
| tree | e3da0a38440d62cdf709275ba2ecf04b6429244f | |
| parent | 7a142533370593c51f2235d867010e4addfea24e (diff) | |
| download | ppe42-gcc-dffad8ccd03aedb0df07dea9b37c61da86c5b49c.tar.gz ppe42-gcc-dffad8ccd03aedb0df07dea9b37c61da86c5b49c.zip | |
* simplify-rtx.c (simplify_unary_operation): Only transform
(not (eq X Y)) into (ne X Y) when mode is BImode or STORE_FLAG_VALUE
is -1. RTL "not" is a bit-wise not, "~", not a logical not "!".
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@71532 138bc75d-0d04-0410-961f-82ee72b054a4
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/simplify-rtx.c | 1 |
2 files changed, 7 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 0b4f6d61960..aac42bff409 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2003-09-18 Roger Sayle <roger@eyesopen.com> + + * simplify-rtx.c (simplify_unary_operation): Only transform + (not (eq X Y)) into (ne X Y) when mode is BImode or STORE_FLAG_VALUE + is -1. RTL "not" is a bit-wise not, "~", not a logical not "!". + 2003-09-18 Zdenek Dvorak <rakdver@atrey.karlin.mff.cuni.cz> PR target/11674 diff --git a/gcc/simplify-rtx.c b/gcc/simplify-rtx.c index f2da9eef4d0..c338b665ca0 100644 --- a/gcc/simplify-rtx.c +++ b/gcc/simplify-rtx.c @@ -808,6 +808,7 @@ simplify_unary_operation (enum rtx_code code, enum machine_mode mode, /* (not (eq X Y)) == (ne X Y), etc. */ if (GET_RTX_CLASS (GET_CODE (op)) == '<' + && (mode == BImode || STORE_FLAG_VALUE == -1) && ((reversed = reversed_comparison_code (op, NULL_RTX)) != UNKNOWN)) return simplify_gen_relational (reversed, mode, VOIDmode, |
