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| author | Roger Sayle <roger@eyesopen.com> | 2006-02-18 05:22:46 +0000 |
|---|---|---|
| committer | Roger Sayle <sayle@gcc.gnu.org> | 2006-02-18 05:22:46 +0000 |
| commit | 8305d7868da2a057825734b31113455ef97d9a76 (patch) | |
| tree | 4d37d7702bbfbd33a364527a6c3b6ba57cad4e0a /libcpp/include/cpplib.h | |
| parent | e097f8873d8389995b81b2794f7ec718064fb8b6 (diff) | |
| download | gcc-8305d7868da2a057825734b31113455ef97d9a76.zip gcc-8305d7868da2a057825734b31113455ef97d9a76.tar.gz gcc-8305d7868da2a057825734b31113455ef97d9a76.tar.bz2 | |
re PR rtl-optimization/25600 (unsigned>>31?-1:0 should be optimized to int>>31)
PR middle-end/25600
* fold-const.c (fold_binary): Fold (X >> C) != 0 into X < 0 when
C is one less than the width of X (and related transformations).
* simplify_rtx.c (simplify_unary_operation_1): Transform
(neg (lt x 0)) into either (ashiftrt X C) or (lshiftrt X C)
depending on STORE_FLAG_VALUE, were C is one less then the
width of X.
From-SVN: r111226
Diffstat (limited to 'libcpp/include/cpplib.h')
0 files changed, 0 insertions, 0 deletions