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Add the function "vectorizeBasicBlock" which allow users vectorize a
BasicBlock in other passes, e.g. we can call vectorizeBasicBlock in the loop unroll pass right after the loop is unrolled. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154089 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -16,7 +16,7 @@
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#define LLVM_TRANSFORMS_VECTORIZE_H
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namespace llvm {
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class BasicBlock;
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class BasicBlockPass;
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//===----------------------------------------------------------------------===//
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@ -25,6 +25,18 @@ class BasicBlockPass;
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//
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BasicBlockPass *createBBVectorizePass();
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//===----------------------------------------------------------------------===//
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/// @brief Vectorize the BasicBlock.
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///
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/// @param BB The BasicBlock to be vectorized
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/// @param P The current running pass, should require AliasAnalysis and
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/// ScalarEvolution. After the vectorization, AliasAnalysis,
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/// ScalarEvolution and CFG are preserved.
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///
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/// @return True if the BB is changed, false otherwise.
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///
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bool vectorizeBasicBlock(Pass *P, BasicBlock &BB);
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} // End llvm namespace
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#endif
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@ -144,6 +144,12 @@ namespace {
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initializeBBVectorizePass(*PassRegistry::getPassRegistry());
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}
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BBVectorize(Pass *P) : BasicBlockPass(ID) {
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AA = &P->getAnalysis<AliasAnalysis>();
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SE = &P->getAnalysis<ScalarEvolution>();
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TD = P->getAnalysisIfAvailable<TargetData>();
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}
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typedef std::pair<Value *, Value *> ValuePair;
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typedef std::pair<ValuePair, size_t> ValuePairWithDepth;
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typedef std::pair<ValuePair, ValuePair> VPPair; // A ValuePair pair
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@ -280,11 +286,7 @@ namespace {
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Instruction *&InsertionPt,
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Instruction *I, Instruction *J);
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virtual bool runOnBasicBlock(BasicBlock &BB) {
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AA = &getAnalysis<AliasAnalysis>();
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SE = &getAnalysis<ScalarEvolution>();
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TD = getAnalysisIfAvailable<TargetData>();
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bool vectorizeBB(BasicBlock &BB) {
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bool changed = false;
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// Iterate a sufficient number of times to merge types of size 1 bit,
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// then 2 bits, then 4, etc. up to half of the target vector width of the
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@ -304,6 +306,14 @@ namespace {
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return changed;
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}
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virtual bool runOnBasicBlock(BasicBlock &BB) {
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AA = &getAnalysis<AliasAnalysis>();
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SE = &getAnalysis<ScalarEvolution>();
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TD = getAnalysisIfAvailable<TargetData>();
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return vectorizeBB(BB);
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}
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virtual void getAnalysisUsage(AnalysisUsage &AU) const {
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BasicBlockPass::getAnalysisUsage(AU);
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AU.addRequired<AliasAnalysis>();
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@ -1861,3 +1871,7 @@ BasicBlockPass *llvm::createBBVectorizePass() {
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return new BBVectorize();
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}
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bool llvm::vectorizeBasicBlock(Pass *P, BasicBlock &BB) {
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BBVectorize BBVectorizer(P);
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return BBVectorizer.vectorizeBB(BB);
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}
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