diff options
| author | Benjamin Kramer <benny.kra@googlemail.com> | 2013-05-16 18:47:58 +0000 |
|---|---|---|
| committer | Benjamin Kramer <benny.kra@googlemail.com> | 2013-05-16 18:47:58 +0000 |
| commit | fc88c3761f18a8b92d4e42a8275807499c2147f6 (patch) | |
| tree | 2dd1b1c9df5f5650a578a291a997e201b726a1e1 /llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp | |
| parent | 21bab5badc9836226312e389c56c28362b96f959 (diff) | |
| download | bcm5719-llvm-fc88c3761f18a8b92d4e42a8275807499c2147f6.tar.gz bcm5719-llvm-fc88c3761f18a8b92d4e42a8275807499c2147f6.zip | |
DAGCombine: Also shrink eq compares where the constant is exactly as large as the smaller type.
if ((x & 255) == 255)
before: movzbl %al, %eax
cmpl $255, %eax
after: cmpb $-1, %al
llvm-svn: 182038
Diffstat (limited to 'llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp index f5fc66c4d3d..95c327c8b05 100644 --- a/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp @@ -1160,7 +1160,7 @@ TargetLowering::SimplifySetCC(EVT VT, SDValue N0, SDValue N1, } // Make sure we're not losing bits from the constant. - if (MinBits < C1.getBitWidth() && MinBits > C1.getActiveBits()) { + if (MinBits < C1.getBitWidth() && MinBits >= C1.getActiveBits()) { EVT MinVT = EVT::getIntegerVT(*DAG.getContext(), MinBits); if (isTypeDesirableForOp(ISD::SETCC, MinVT)) { // Will get folded away. |
