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NewGVN: Reverse sense of this test to make it clearer 

llvm-svn: 294851
This commit is contained in:
Daniel Berlin 2017-02-11 15:20:15 +00:00
parent 1529bb93c9
commit 22a4a01ffa
1 changed files with 7 additions and 5 deletions
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12
llvm/lib/Transforms/Scalar/NewGVN.cpp
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@ -1450,11 +1450,13 @@ void NewGVN::initializeCongruenceClasses(Function &F) {
MemoryAccessToClass[MP] = InitialClass; MemoryAccessToClass[MP] = InitialClass;
for (auto &I : B) { for (auto &I : B) {
// Don't insert void terminators into the class // Don't insert void terminators into the class. We don't value number
if (!isa<TerminatorInst>(I) || !I.getType()->isVoidTy()) { // them, and they just end up sitting in INITIAL.
InitialValues.insert(&I); if (isa<TerminatorInst>(I) && I.getType()->isVoidTy())
ValueToClass[&I] = InitialClass; continue;
} InitialValues.insert(&I);
ValueToClass[&I] = InitialClass;
// All memory accesses are equivalent to live on entry to start. They must // All memory accesses are equivalent to live on entry to start. They must
// be initialized to something so that initial changes are noticed. For // be initialized to something so that initial changes are noticed. For
// the maximal answer, we initialize them all to be the same as // the maximal answer, we initialize them all to be the same as