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| author | Roger Sayle <roger@eyesopen.com> | 2004-07-05 16:44:17 +0000 |
|---|---|---|
| committer | Roger Sayle <sayle@gcc.gnu.org> | 2004-07-05 16:44:17 +0000 |
| commit | ab0e8f666d04db063342c726ea95a91401ec7545 (patch) | |
| tree | 8295df6654e3966bffcbd5af16d6026cf42c98c7 /gcc/objc/objc-lang.c | |
| parent | 48eb4e53cdecda5736763287719b422e58c1058f (diff) | |
| download | gcc-ab0e8f666d04db063342c726ea95a91401ec7545.zip gcc-ab0e8f666d04db063342c726ea95a91401ec7545.tar.gz gcc-ab0e8f666d04db063342c726ea95a91401ec7545.tar.bz2 | |
fold-const.c (fold): Optimize unsigned modulus by a power of two into a bit-wise AND, i.e.
* fold-const.c (fold) <TRUNC_MOD_EXPR>: Optimize unsigned modulus
by a power of two into a bit-wise AND, i.e. "X % C" as "X & (C-1)".
Normalize "X % C" as "X % -C" for signed modulus and negative C.
Optimize "X % -Y" as "X % Y" for signed modulus.
<EQ_EXPR>: Recursively call "fold" when transforming "(X % Y) == 0"
into "((unsigned) X % Y) == 0".
From-SVN: r84122
Diffstat (limited to 'gcc/objc/objc-lang.c')
0 files changed, 0 insertions, 0 deletions