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| author | Eric Botcazou <ebotcazou@libertysurf.fr> | 2003-06-26 12:37:35 +0200 |
|---|---|---|
| committer | Eric Botcazou <ebotcazou@gcc.gnu.org> | 2003-06-26 10:37:35 +0000 |
| commit | 6dc208a1ed88e40e359173ece8a3f9441001fd6c (patch) | |
| tree | 14b89f3251bb5d788e34146c737c60cdcc20685b /gcc/fold-const.c | |
| parent | fc5eb4a11164a00abe56f16d14b3f5264434339a (diff) | |
| download | gcc-6dc208a1ed88e40e359173ece8a3f9441001fd6c.zip gcc-6dc208a1ed88e40e359173ece8a3f9441001fd6c.tar.gz gcc-6dc208a1ed88e40e359173ece8a3f9441001fd6c.tar.bz2 | |
re PR rtl-optimization/11210 (optimizer drops conditional with typecast from signed to unsigned char)
PR optimization/11210
* fold-const (decode_field_reference): Strip only NOPs that
don't affect the sign.
From-SVN: r68524
Diffstat (limited to 'gcc/fold-const.c')
| -rw-r--r-- | gcc/fold-const.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/gcc/fold-const.c b/gcc/fold-const.c index b35d733..b160a4e 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -2742,7 +2742,8 @@ decode_field_reference (exp, pbitsize, pbitpos, pmode, punsignedp, if (! INTEGRAL_TYPE_P (TREE_TYPE (exp))) return 0; - STRIP_NOPS (exp); + /* Signedness matters here. */ + STRIP_SIGN_NOPS (exp); if (TREE_CODE (exp) == BIT_AND_EXPR) { |