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| author | Chris Lattner <sabre@nondot.org> | 2006-01-31 05:04:52 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2006-01-31 05:04:52 +0000 |
| commit | e9721b29849d16ce20c8839376413fcabed46c38 (patch) | |
| tree | 8717e44b366ae72108e60ec7c5cd686ea8995fdf /llvm/lib | |
| parent | 2dd217b88f25a7acdd60f468a535be8971453671 (diff) | |
| download | bcm5719-llvm-e9721b29849d16ce20c8839376413fcabed46c38.tar.gz bcm5719-llvm-e9721b29849d16ce20c8839376413fcabed46c38.zip | |
Only insert an AND when converting from BR_COND to BRCC if needed.
llvm-svn: 25832
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp index 79037d3020f..f09fa625006 100644 --- a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp @@ -703,7 +703,9 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) { } else { // Make sure the condition is either zero or one. It may have been // promoted from something else. - Tmp2 = DAG.getZeroExtendInReg(Tmp2, MVT::i1); + unsigned NumBits = MVT::getSizeInBits(Tmp2.getValueType()); + if (!TLI.MaskedValueIsZero(Tmp2, (~0ULL >> (64-NumBits))^1)) + Tmp2 = DAG.getZeroExtendInReg(Tmp2, MVT::i1); Result = DAG.getNode(ISD::BR_CC, MVT::Other, Tmp1, DAG.getCondCode(ISD::SETNE), Tmp2, |
