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Now that we have a basic if-conversion infrastructure we can rename the 

"single basic block loop vectorizer" to "innermost loop vectorizer".

llvm-svn: 169158
This commit is contained in:
Nadav Rotem 2012-12-03 21:33:08 +00:00
parent e26658d372
commit eee203d885
1 changed files with 18 additions and 18 deletions
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36
llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
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@ -20,7 +20,7 @@
// 1. The main loop pass that drives the different parts.
// 2. LoopVectorizationLegality - A unit that checks for the legality
// of the vectorization.
// 3. SingleBlockLoopVectorizer - A unit that performs the actual
// 3. InnerLoopVectorizer - A unit that performs the actual
// widening of instructions.
// 4. LoopVectorizationCostModel - A unit that checks for the profitability
// of vectorization. It decides on the optimal vector width, which
@ -100,7 +100,7 @@ namespace {
class LoopVectorizationLegality;
class LoopVectorizationCostModel;
/// SingleBlockLoopVectorizer vectorizes loops which contain only one basic
/// InnerLoopVectorizer vectorizes loops which contain only one basic
/// block to a specified vectorization factor (VF).
/// This class performs the widening of scalars into vectors, or multiple
/// scalars. This class also implements the following features:
@ -109,15 +109,15 @@ class LoopVectorizationCostModel;
/// * It handles the code generation for reduction variables.
/// * Scalarization (implementation using scalars) of un-vectorizable
/// instructions.
/// SingleBlockLoopVectorizer does not perform any vectorization-legality
/// InnerLoopVectorizer does not perform any vectorization-legality
/// checks, and relies on the caller to check for the different legality
/// aspects. The SingleBlockLoopVectorizer relies on the
/// aspects. The InnerLoopVectorizer relies on the
/// LoopVectorizationLegality class to provide information about the induction
/// and reduction variables that were found to a given vectorization factor.
class SingleBlockLoopVectorizer {
class InnerLoopVectorizer {
public:
/// Ctor.
SingleBlockLoopVectorizer(Loop *Orig, ScalarEvolution *Se, LoopInfo *Li,
InnerLoopVectorizer(Loop *Orig, ScalarEvolution *Se, LoopInfo *Li,
DominatorTree *Dt, DataLayout *Dl,
unsigned VecWidth):
OrigLoop(Orig), SE(Se), LI(Li), DT(Dt), DL(Dl), VF(VecWidth),
@ -226,8 +226,8 @@ private:
/// * Scalars checks - The code in canVectorizeInstrs and canVectorizeMemory
/// checks for a number of different conditions, such as the availability of a
/// single induction variable, that all types are supported and vectorize-able,
/// etc. This code reflects the capabilities of SingleBlockLoopVectorizer.
/// This class is also used by SingleBlockLoopVectorizer for identifying
/// etc. This code reflects the capabilities of InnerLoopVectorizer.
/// This class is also used by InnerLoopVectorizer for identifying
/// induction variable and the different reduction variables.
class LoopVectorizationLegality {
public:
@ -511,7 +511,7 @@ struct LoopVectorize : public LoopPass {
"\n");
// If we decided that it is *legal* to vectorizer the loop then do it.
SingleBlockLoopVectorizer LB(L, SE, LI, DT, DL, VF);
InnerLoopVectorizer LB(L, SE, LI, DT, DL, VF);
LB.vectorize(&LVL);
DEBUG(verifyFunction(*L->getHeader()->getParent()));
@ -531,7 +531,7 @@ struct LoopVectorize : public LoopPass {
};
Value *SingleBlockLoopVectorizer::getBroadcastInstrs(Value *V) {
Value *InnerLoopVectorizer::getBroadcastInstrs(Value *V) {
// Create the types.
LLVMContext &C = V->getContext();
Type *VTy = VectorType::get(V->getType(), VF);
@ -563,7 +563,7 @@ Value *SingleBlockLoopVectorizer::getBroadcastInstrs(Value *V) {
return Shuf;
}
Value *SingleBlockLoopVectorizer::getConsecutiveVector(Value* Val) {
Value *InnerLoopVectorizer::getConsecutiveVector(Value* Val) {
assert(Val->getType()->isVectorTy() && "Must be a vector");
assert(Val->getType()->getScalarType()->isIntegerTy() &&
"Elem must be an integer");
@ -622,7 +622,7 @@ bool LoopVectorizationLegality::isUniform(Value *V) {
return (SE->isLoopInvariant(SE->getSCEV(V), TheLoop));
}
Value *SingleBlockLoopVectorizer::getVectorValue(Value *V) {
Value *InnerLoopVectorizer::getVectorValue(Value *V) {
assert(V != Induction && "The new induction variable should not be used.");
assert(!V->getType()->isVectorTy() && "Can't widen a vector");
// If we saved a vectorized copy of V, use it.
@ -637,11 +637,11 @@ Value *SingleBlockLoopVectorizer::getVectorValue(Value *V) {
}
Constant*
SingleBlockLoopVectorizer::getUniformVector(unsigned Val, Type* ScalarTy) {
InnerLoopVectorizer::getUniformVector(unsigned Val, Type* ScalarTy) {
return ConstantVector::getSplat(VF, ConstantInt::get(ScalarTy, Val, true));
}
void SingleBlockLoopVectorizer::scalarizeInstruction(Instruction *Instr) {
void InnerLoopVectorizer::scalarizeInstruction(Instruction *Instr) {
assert(!Instr->getType()->isAggregateType() && "Can't handle vectors");
// Holds vector parameters or scalars, in case of uniform vals.
SmallVector<Value*, 8> Params;
@ -712,7 +712,7 @@ void SingleBlockLoopVectorizer::scalarizeInstruction(Instruction *Instr) {
}
Value*
SingleBlockLoopVectorizer::addRuntimeCheck(LoopVectorizationLegality *Legal,
InnerLoopVectorizer::addRuntimeCheck(LoopVectorizationLegality *Legal,
Instruction *Loc) {
LoopVectorizationLegality::RuntimePointerCheck *PtrRtCheck =
Legal->getRuntimePointerCheck();
@ -773,7 +773,7 @@ SingleBlockLoopVectorizer::addRuntimeCheck(LoopVectorizationLegality *Legal,
}
void
SingleBlockLoopVectorizer::createEmptyLoop(LoopVectorizationLegality *Legal) {
InnerLoopVectorizer::createEmptyLoop(LoopVectorizationLegality *Legal) {
/*
In this function we generate a new loop. The new loop will contain
the vectorized instructions while the old loop will continue to run the
@ -1037,7 +1037,7 @@ getReductionIdentity(LoopVectorizationLegality::ReductionKind K) {
}
void
SingleBlockLoopVectorizer::vectorizeLoop(LoopVectorizationLegality *Legal) {
InnerLoopVectorizer::vectorizeLoop(LoopVectorizationLegality *Legal) {
//===------------------------------------------------===//
//
// Notice: any optimization or new instruction that go
@ -1427,7 +1427,7 @@ SingleBlockLoopVectorizer::vectorizeLoop(LoopVectorizationLegality *Legal) {
}// end of for each redux variable.
}
void SingleBlockLoopVectorizer::updateAnalysis() {
void InnerLoopVectorizer::updateAnalysis() {
// Forget the original basic block.
SE->forgetLoop(OrigLoop);