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| author | Chris Lattner <sabre@nondot.org> | 2005-04-13 19:41:05 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2005-04-13 19:41:05 +0000 |
| commit | 8c3d409dc7bd29209301f010d710bd56f7c70c79 (patch) | |
| tree | 605de9463e63cca8ecb1a489dd2f1e6fe8974924 /llvm/lib/CodeGen | |
| parent | 93341a0f8296055c813810928c8d1f0dc997e80f (diff) | |
| download | bcm5719-llvm-8c3d409dc7bd29209301f010d710bd56f7c70c79.tar.gz bcm5719-llvm-8c3d409dc7bd29209301f010d710bd56f7c70c79.zip | |
avoid work when possible, perhaps fix the problem nate and andrew are seeing
with != 0 comparisons vanishing.
llvm-svn: 21287
Diffstat (limited to 'llvm/lib/CodeGen')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp index 48e0f7bc9ad..4b3064593c7 100644 --- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp @@ -286,6 +286,7 @@ SelectionDAG::~SelectionDAG() { } SDOperand SelectionDAG::getZeroExtendInReg(SDOperand Op, MVT::ValueType VT) { + if (Op.getValueType() == VT) return Op; int64_t Imm = ~0ULL >> 64-MVT::getSizeInBits(VT); return getNode(ISD::AND, Op.getValueType(), Op, getConstant(Imm, Op.getValueType())); |
