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convert more vectors to smallvectors, 2.8% speedup
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34333 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -3411,7 +3411,7 @@ Instruction *InstCombiner::visitAnd(BinaryOperator &I) {
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/// CollectBSwapParts - Look to see if the specified value defines a single byte
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/// in the result. If it does, and if the specified byte hasn't been filled in
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/// yet, fill it in and return false.
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static bool CollectBSwapParts(Value *V, std::vector<Value*> &ByteValues) {
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static bool CollectBSwapParts(Value *V, SmallVector<Value*, 8> &ByteValues) {
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Instruction *I = dyn_cast<Instruction>(V);
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if (I == 0) return true;
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@ -3495,7 +3495,7 @@ Instruction *InstCombiner::MatchBSwap(BinaryOperator &I) {
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/// ByteValues - For each byte of the result, we keep track of which value
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/// defines each byte.
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std::vector<Value*> ByteValues;
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SmallVector<Value*, 8> ByteValues;
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ByteValues.resize(TD->getTypeSize(I.getType()));
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// Try to find all the pieces corresponding to the bswap.
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@ -5791,7 +5791,7 @@ Instruction *InstCombiner::PromoteCastOfAllocation(CastInst &CI,
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// Remove any uses of AI that are dead.
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assert(!CI.use_empty() && "Dead instructions should be removed earlier!");
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std::vector<Instruction*> DeadUsers;
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for (Value::use_iterator UI = AI.use_begin(), E = AI.use_end(); UI != E; ) {
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Instruction *User = cast<Instruction>(*UI++);
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if (isInstructionTriviallyDead(User)) {
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