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author | Nick Lewycky <nicholas@mxc.ca> | 2008-09-03 06:48:55 +0000 |
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committer | Nick Lewycky <nicholas@mxc.ca> | 2008-09-03 06:48:55 +0000 |
commit | 8373d38afddec4ade17f72088cb5eeb229e87238 (patch) | |
tree | 771462299e67d8321fcc985cbaf1abb469a801a5 /lib/VMCore/ConstantFold.cpp | |
parent | 8b19e56051c45c3e48523238a5a0f33bbac0115d (diff) | |
download | external_llvm-8373d38afddec4ade17f72088cb5eeb229e87238.zip external_llvm-8373d38afddec4ade17f72088cb5eeb229e87238.tar.gz external_llvm-8373d38afddec4ade17f72088cb5eeb229e87238.tar.bz2 |
Try to fold each element of a vector. This is needed to maintain structural
equivalence.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55694 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/VMCore/ConstantFold.cpp')
-rw-r--r-- | lib/VMCore/ConstantFold.cpp | 16 |
1 files changed, 4 insertions, 12 deletions
diff --git a/lib/VMCore/ConstantFold.cpp b/lib/VMCore/ConstantFold.cpp index 25c756a..93cfccf 100644 --- a/lib/VMCore/ConstantFold.cpp +++ b/lib/VMCore/ConstantFold.cpp @@ -238,12 +238,8 @@ Constant *llvm::ConstantFoldCastInstruction(unsigned opc, const Constant *V, std::vector<Constant*> res; const VectorType *DestVecTy = cast<VectorType>(DestTy); const Type *DstEltTy = DestVecTy->getElementType(); - for (unsigned i = 0, e = CV->getType()->getNumElements(); i != e; ++i) { - Constant *C = ConstantFoldCastInstruction(opc, CV->getOperand(i), - DstEltTy); - if (!C) return 0; // Can't fold operand. - res.push_back(C); - } + for (unsigned i = 0, e = CV->getType()->getNumElements(); i != e; ++i) + res.push_back(ConstantExpr::getCast(opc, CV->getOperand(i), DstEltTy)); return ConstantVector::get(DestVecTy, res); } return 0; // Can't fold. @@ -271,12 +267,8 @@ Constant *llvm::ConstantFoldCastInstruction(unsigned opc, const Constant *V, std::vector<Constant*> res; const VectorType *DestVecTy = cast<VectorType>(DestTy); const Type *DstEltTy = DestVecTy->getElementType(); - for (unsigned i = 0, e = CV->getType()->getNumElements(); i != e; ++i) { - Constant *C = ConstantFoldCastInstruction(opc, CV->getOperand(i), - DstEltTy); - if (!C) return 0; // Can't fold operand. - res.push_back(C); - } + for (unsigned i = 0, e = CV->getType()->getNumElements(); i != e; ++i) + res.push_back(ConstantExpr::getCast(opc, CV->getOperand(i), DstEltTy)); return ConstantVector::get(DestVecTy, res); } return 0; |