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Constant folding for insertvalue and extractvalue.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51889 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2008-06-03 00:15:20 +00:00
parent 2f170997b5
commit 6e68f59b78
4 changed files with 127 additions and 16 deletions
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5
lib/VMCore/Constants.cpp
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@ -2305,9 +2305,10 @@ Constant *ConstantExpr::getInsertValueTy(const Type *ReqTy, Constant *Agg,
"insertvalue indices invalid!");
assert(Agg->getType() == ReqTy &&
"insertvalue type invalid!");
assert(Agg->getType()->isFirstClassType() &&
"Non-first-class type for constant InsertValue expression");
if (Constant *FC = ConstantFoldInsertValueInstruction(Agg, Val, Idxs, NumIdx))
return FC; // Fold a few common cases...
// Look up the constant in the table first to ensure uniqueness
std::vector<Constant*> ArgVec;
ArgVec.push_back(Agg);
@ -2336,6 +2337,8 @@ Constant *ConstantExpr::getExtractValueTy(const Type *ReqTy, Constant *Agg,
"extractvalue indices invalid!");
assert(Agg->getType()->isFirstClassType() &&
"Non-first-class type for constant extractvalue expression");
if (Constant *FC = ConstantFoldExtractValueInstruction(Agg, Idxs, NumIdx))
return FC; // Fold a few common cases...
// Look up the constant in the table first to ensure uniqueness
std::vector<Constant*> ArgVec;
ArgVec.push_back(Agg);