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[CFLGraph] Add support for unary fneg instruction.

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Differential Revision: https://reviews.llvm.org/D62791

llvm-svn: 362737
This commit is contained in:
Craig Topper 2019-06-06 19:21:23 +00:00
parent 10fb6600cd
commit ade3dc8f75
2 changed files with 12 additions and 1 deletions
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10
lib/Analysis/CFLGraph.h
View File

@ -291,6 +291,11 @@ template <typename CFLAA> class CFLGraphBuilder {
addAssignEdge(Op2, &Inst);
}
void visitUnaryOperator(UnaryOperator &Inst) {
auto *Src = Inst.getOperand(0);
addAssignEdge(Src, &Inst);
}
void visitAtomicCmpXchgInst(AtomicCmpXchgInst &Inst) {
auto *Ptr = Inst.getPointerOperand();
auto *Val = Inst.getNewValOperand();
@ -579,6 +584,11 @@ template <typename CFLAA> class CFLGraphBuilder {
break;
}
case Instruction::FNeg: {
addAssignEdge(CE->getOperand(0), CE);
break;
}
default:
llvm_unreachable("Unknown instruction type encountered!");
}

3
test/Analysis/CFLAliasAnalysis/Steensgaard/must-and-partial.ll
View File

@ -49,6 +49,7 @@ define void @testr2(double* nocapture readonly %A, double* nocapture readonly %I
%1 = load double, double* %arrayidx22
%arrayidx25 = getelementptr inbounds double, double* %A, i64 2
%2 = load double, double* %arrayidx25
%mul26 = fmul double %1, %2
%3 = fneg double %1
%mul26 = fmul double %3, %2
ret void
}