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eliminate a malloc/free for (almost) every GEP processed. This speeds up

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IPSCCP 3.3% on kimwitu.

llvm-svn: 33793
This commit is contained in:
Chris Lattner 2007-02-02 20:51:48 +00:00
parent 449f7d0d63
commit e9c0bac4c5
1 changed files with 3 additions and 2 deletions
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5
lib/Transforms/Scalar/SCCP.cpp
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@ -968,7 +968,7 @@ void SCCPSolver::visitGetElementPtrInst(GetElementPtrInst &I) {
LatticeVal &IV = ValueState[&I];
if (IV.isOverdefined()) return;
std::vector<Constant*> Operands;
SmallVector<Constant*, 8> Operands;
Operands.reserve(I.getNumOperands());
for (unsigned i = 0, e = I.getNumOperands(); i != e; ++i) {
@ -986,7 +986,8 @@ void SCCPSolver::visitGetElementPtrInst(GetElementPtrInst &I) {
Constant *Ptr = Operands[0];
Operands.erase(Operands.begin()); // Erase the pointer from idx list...
markConstant(IV, &I, ConstantExpr::getGetElementPtr(Ptr, Operands));
markConstant(IV, &I, ConstantExpr::getGetElementPtr(Ptr, &Operands[0],
Operands.size()));
}
void SCCPSolver::visitStoreInst(Instruction &SI) {