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| author | Chris Lattner <sabre@nondot.org> | 2005-11-05 07:40:31 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2005-11-05 07:40:31 +0000 |
| commit | c812e5d6b87990ca5d882fbc759fd6f2e0d5b681 (patch) | |
| tree | 212452fd0f9d159a1ef4c71d72e39b6216a2c960 /lib/AsmParser/llvmAsmParser.cpp | |
| parent | 11a49f2c0d26751dc3639578d879955cbbfa1ec5 (diff) | |
Turn sdiv into udiv if both operands have a clear sign bit. This occurs
a few times in crafty:
OLD: %tmp.36 = div int %tmp.35, 8 ; <int> [#uses=1]
NEW: %tmp.36 = div uint %tmp.35, 8 ; <uint> [#uses=0]
OLD: %tmp.19 = div int %tmp.18, 8 ; <int> [#uses=1]
NEW: %tmp.19 = div uint %tmp.18, 8 ; <uint> [#uses=0]
OLD: %tmp.117 = div int %tmp.116, 8 ; <int> [#uses=1]
NEW: %tmp.117 = div uint %tmp.116, 8 ; <uint> [#uses=0]
OLD: %tmp.92 = div int %tmp.91, 8 ; <int> [#uses=1]
NEW: %tmp.92 = div uint %tmp.91, 8 ; <uint> [#uses=0]
Which all turn into shrs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24190 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/AsmParser/llvmAsmParser.cpp')
0 files changed, 0 insertions, 0 deletions