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An Instruction has a trivial kill only if its use is in the same

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basic block.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103725 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2010-05-13 19:19:32 +00:00
parent 2c18d3b0fe
commit e1308d86ed
1 changed files with 5 additions and 2 deletions
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7
lib/CodeGen/SelectionDAG/FastISel.cpp
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@ -57,9 +57,12 @@
using namespace llvm;
bool FastISel::hasTrivialKill(const Value *V) const {
// Don't consider constants or arguments to have trivial kills.
// Don't consider constants or arguments to have trivial kills. Only
// instructions with a single use in the same basic block.
const Instruction *I = dyn_cast<Instruction>(V);
return I && I->hasOneUse();
return I &&
I->hasOneUse() &&
cast<Instruction>(I->use_begin())->getParent() == I->getParent();
}
unsigned FastISel::getRegForValue(const Value *V) {