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| author | Nate Begeman <natebegeman@mac.com> | 2008-01-29 02:24:00 +0000 |
|---|---|---|
| committer | Nate Begeman <natebegeman@mac.com> | 2008-01-29 02:24:00 +0000 |
| commit | 2b10fde55c58895edce4ae48a8242a6405840ed7 (patch) | |
| tree | 4128b11dcd26dc3d7e4ebeeca9bc7e34b51c29a9 | |
| parent | e99fc909ce61423c2e27314675708a323e897d57 (diff) | |
| download | external_llvm-2b10fde55c58895edce4ae48a8242a6405840ed7.zip external_llvm-2b10fde55c58895edce4ae48a8242a6405840ed7.tar.gz external_llvm-2b10fde55c58895edce4ae48a8242a6405840ed7.tar.bz2 | |
Properly expand extract-element for non-power-of-2 codegen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46486 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/CodeGen/SelectionDAG/LegalizeDAG.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp index 54cfad6..d18d4d9 100644 --- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp +++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp @@ -4405,14 +4405,15 @@ SDOperand SelectionDAGLegalize::ExpandEXTRACT_VECTOR_ELT(SDOperand Op) { // This must be an access of the only element. Return it. Op = ScalarizeVectorOp(Vec); } else if (!TLI.isTypeLegal(TVT) && isa<ConstantSDNode>(Idx)) { + unsigned NumLoElts = 1 << Log2_32(NumElems-1); ConstantSDNode *CIdx = cast<ConstantSDNode>(Idx); SDOperand Lo, Hi; SplitVectorOp(Vec, Lo, Hi); - if (CIdx->getValue() < NumElems/2) { + if (CIdx->getValue() < NumLoElts) { Vec = Lo; } else { Vec = Hi; - Idx = DAG.getConstant(CIdx->getValue() - NumElems/2, + Idx = DAG.getConstant(CIdx->getValue() - NumLoElts, Idx.getValueType()); } |