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[InstCombine] Use Twines to generate names.

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Since the names are used in a loop this does more work in debug builds. In
release builds value names are generally discarded so we don't have to do
the concatenation at all. It's also simpler code, no functional change
intended.

llvm-svn: 263215
This commit is contained in:
Benjamin Kramer 2016-03-11 10:20:56 +00:00
parent 941b85256d
commit af02270708
1 changed files with 5 additions and 15 deletions
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20
lib/Transforms/InstCombine/InstCombineLoadStoreAlloca.cpp
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@ -523,7 +523,7 @@ static Instruction *unpackLoadToAggregate(InstCombiner &IC, LoadInst &LI) {
if (!T->isAggregateType())
return nullptr;
auto Name = LI.getName();
StringRef Name = LI.getName();
assert(LI.getAlignment() && "Alignment must be set at this point");
if (auto *ST = dyn_cast<StructType>(T)) {
@ -547,11 +547,6 @@ static Instruction *unpackLoadToAggregate(InstCombiner &IC, LoadInst &LI) {
if (!Align)
Align = DL.getABITypeAlignment(ST);
SmallString<16> LoadName = Name;
LoadName += ".unpack";
SmallString<16> EltName = Name;
EltName += ".elt";
auto *Addr = LI.getPointerOperand();
auto *IdxType = Type::getInt32Ty(T->getContext());
auto *Zero = ConstantInt::get(IdxType, 0);
@ -563,9 +558,9 @@ static Instruction *unpackLoadToAggregate(InstCombiner &IC, LoadInst &LI) {
ConstantInt::get(IdxType, i),
};
auto *Ptr = IC.Builder->CreateInBoundsGEP(ST, Addr, makeArrayRef(Indices),
EltName);
Name + ".elt");
auto EltAlign = MinAlign(Align, SL->getElementOffset(i));
auto *L = IC.Builder->CreateAlignedLoad(Ptr, EltAlign, LoadName);
auto *L = IC.Builder->CreateAlignedLoad(Ptr, EltAlign, Name + ".unpack");
V = IC.Builder->CreateInsertValue(V, L, i);
}
@ -588,11 +583,6 @@ static Instruction *unpackLoadToAggregate(InstCombiner &IC, LoadInst &LI) {
if (!Align)
Align = DL.getABITypeAlignment(T);
SmallString<16> LoadName = Name;
LoadName += ".unpack";
SmallString<16> EltName = Name;
EltName += ".elt";
auto *Addr = LI.getPointerOperand();
auto *IdxType = Type::getInt64Ty(T->getContext());
auto *Zero = ConstantInt::get(IdxType, 0);
@ -605,9 +595,9 @@ static Instruction *unpackLoadToAggregate(InstCombiner &IC, LoadInst &LI) {
ConstantInt::get(IdxType, i),
};
auto *Ptr = IC.Builder->CreateInBoundsGEP(AT, Addr, makeArrayRef(Indices),
EltName);
Name + ".elt");
auto *L = IC.Builder->CreateAlignedLoad(Ptr, MinAlign(Align, Offset),
LoadName);
Name + ".unpack");
V = IC.Builder->CreateInsertValue(V, L, i);
Offset += EltSize;
}