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Implement instcombine/cast.ll:test16:

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Canonicalize cast X to bool into a setne instruction


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13736 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2004-05-25 04:29:21 +00:00
parent 2e13cea896
commit a710ddc9c4
1 changed files with 5 additions and 0 deletions
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5
lib/Transforms/Scalar/InstructionCombining.cpp
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@ -1996,6 +1996,11 @@ Instruction *InstCombiner::visitCastInst(CastInst &CI) {
}
}
// If this is a cast to bool, turn it into the appropriate setne instruction.
if (CI.getType() == Type::BoolTy)
return BinaryOperator::create(Instruction::SetNE, CI.getOperand(0),
Constant::getNullValue(CI.getOperand(0)->getType()));
// If casting the result of a getelementptr instruction with no offset, turn
// this into a cast of the original pointer!
//