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[NFC][PassBuilder] addVectorPasses(): clarify that 'IsLTO' is actually 'IsFullLTO'

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I.e. it will be `false` for thin lto.
This commit is contained in:
Roman Lebedev 2021-07-01 10:09:24 +03:00
parent a315353f43
commit e9c11e84f4
4 changed files with 19 additions and 19 deletions
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2
include/llvm/Passes/PassBuilder.h
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@ -710,7 +710,7 @@ private:
void addRequiredLTOPreLinkPasses(ModulePassManager &MPM);
void addVectorPasses(OptimizationLevel Level, FunctionPassManager &FPM,
bool IsLTO);
bool IsFullLTO);
static Optional<std::vector<PipelineElement>>
parsePipelineText(StringRef Text);

4
include/llvm/Transforms/IPO/PassManagerBuilder.h
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@ -218,8 +218,8 @@ private:
void addLateLTOOptimizationPasses(legacy::PassManagerBase &PM);
void addPGOInstrPasses(legacy::PassManagerBase &MPM, bool IsCS);
void addFunctionSimplificationPasses(legacy::PassManagerBase &MPM);
void addVectorPasses(legacy::PassManagerBase &PM, bool IsLTO);
void addVectorPasses(legacy::PassManagerBase &PM, bool IsFullLTO);
public:
/// populateFunctionPassManager - This fills in the function pass manager,
/// which is expected to be run on each function immediately as it is

16
lib/Passes/PassBuilder.cpp
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@ -1198,11 +1198,11 @@ PassBuilder::buildModuleSimplificationPipeline(OptimizationLevel Level,
/// TODO: Should LTO cause any differences to this set of passes?
void PassBuilder::addVectorPasses(OptimizationLevel Level,
FunctionPassManager &FPM, bool IsLTO) {
FunctionPassManager &FPM, bool IsFullLTO) {
FPM.addPass(LoopVectorizePass(
LoopVectorizeOptions(!PTO.LoopInterleaving, !PTO.LoopVectorization)));
if (IsLTO) {
if (IsFullLTO) {
// The vectorizer may have significantly shortened a loop body; unroll
// again. Unroll small loops to hide loop backedge latency and saturate any
// parallel execution resources of an out-of-order processor. We also then
@ -1220,7 +1220,7 @@ void PassBuilder::addVectorPasses(OptimizationLevel Level,
FPM.addPass(WarnMissedTransformationsPass());
}
if (!IsLTO) {
if (!IsFullLTO) {
// Eliminate loads by forwarding stores from the previous iteration to loads
// of the current iteration.
FPM.addPass(LoopLoadEliminationPass());
@ -1267,7 +1267,7 @@ void PassBuilder::addVectorPasses(OptimizationLevel Level,
.hoistCommonInsts(true)
.sinkCommonInsts(true)));
if (IsLTO) {
if (IsFullLTO) {
FPM.addPass(SCCPPass());
FPM.addPass(InstCombinePass());
FPM.addPass(BDCEPass());
@ -1283,7 +1283,7 @@ void PassBuilder::addVectorPasses(OptimizationLevel Level,
// Enhance/cleanup vector code.
FPM.addPass(VectorCombinePass());
if (!IsLTO) {
if (!IsFullLTO) {
FPM.addPass(InstCombinePass());
// Unroll small loops to hide loop backedge latency and saturate any
// parallel execution resources of an out-of-order processor. We also then
@ -1312,7 +1312,7 @@ void PassBuilder::addVectorPasses(OptimizationLevel Level,
// alignment information, try to re-derive it here.
FPM.addPass(AlignmentFromAssumptionsPass());
if (IsLTO)
if (IsFullLTO)
FPM.addPass(InstCombinePass());
}
@ -1410,7 +1410,7 @@ PassBuilder::buildModuleOptimizationPipeline(OptimizationLevel Level,
// from the TargetLibraryInfo.
OptimizePM.addPass(InjectTLIMappings());
addVectorPasses(Level, OptimizePM, /* IsLTO */ false);
addVectorPasses(Level, OptimizePM, /* IsFullLTO */ false);
// Split out cold code. Splitting is done late to avoid hiding context from
// other optimizations and inadvertently regressing performance. The tradeoff
@ -1862,7 +1862,7 @@ PassBuilder::buildLTODefaultPipeline(OptimizationLevel Level,
MainFPM.addPass(LoopDistributePass());
addVectorPasses(Level, MainFPM, /* IsLTO */ true);
addVectorPasses(Level, MainFPM, /* IsFullLTO */ true);
invokePeepholeEPCallbacks(MainFPM, Level);
MainFPM.addPass(JumpThreadingPass(/*InsertFreezeWhenUnfoldingSelect*/ true));

16
lib/Transforms/IPO/PassManagerBuilder.cpp
View File

@ -531,10 +531,10 @@ void PassManagerBuilder::addFunctionSimplificationPasses(
/// FIXME: Should LTO cause any differences to this set of passes?
void PassManagerBuilder::addVectorPasses(legacy::PassManagerBase &PM,
bool IsLTO) {
bool IsFullLTO) {
PM.add(createLoopVectorizePass(!LoopsInterleaved, !LoopVectorize));
if (IsLTO) {
if (IsFullLTO) {
// The vectorizer may have significantly shortened a loop body; unroll
// again. Unroll small loops to hide loop backedge latency and saturate any
// parallel execution resources of an out-of-order processor. We also then
@ -550,7 +550,7 @@ void PassManagerBuilder::addVectorPasses(legacy::PassManagerBase &PM,
PM.add(createWarnMissedTransformationsPass());
}
if (!IsLTO) {
if (!IsFullLTO) {
// Eliminate loads by forwarding stores from the previous iteration to loads
// of the current iteration.
PM.add(createLoopLoadEliminationPass());
@ -590,7 +590,7 @@ void PassManagerBuilder::addVectorPasses(legacy::PassManagerBase &PM,
.hoistCommonInsts(true)
.sinkCommonInsts(true)));
if (IsLTO) {
if (IsFullLTO) {
PM.add(createSCCPPass()); // Propagate exposed constants
PM.add(createInstructionCombiningPass()); // Clean up again
PM.add(createBitTrackingDCEPass());
@ -606,7 +606,7 @@ void PassManagerBuilder::addVectorPasses(legacy::PassManagerBase &PM,
// Enhance/cleanup vector code.
PM.add(createVectorCombinePass());
if (!IsLTO) {
if (!IsFullLTO) {
addExtensionsToPM(EP_Peephole, PM);
PM.add(createInstructionCombiningPass());
@ -639,7 +639,7 @@ void PassManagerBuilder::addVectorPasses(legacy::PassManagerBase &PM,
// about pointer alignments.
PM.add(createAlignmentFromAssumptionsPass());
if (IsLTO)
if (IsFullLTO)
PM.add(createInstructionCombiningPass());
}
@ -918,7 +918,7 @@ void PassManagerBuilder::populateModulePassManager(
// llvm.loop.distribute=true or when -enable-loop-distribute is specified.
MPM.add(createLoopDistributePass());
addVectorPasses(MPM, /* IsLTO */ false);
addVectorPasses(MPM, /* IsFullLTO */ false);
// FIXME: We shouldn't bother with this anymore.
MPM.add(createStripDeadPrototypesPass()); // Get rid of dead prototypes
@ -1133,7 +1133,7 @@ void PassManagerBuilder::addLTOOptimizationPasses(legacy::PassManagerBase &PM) {
ForgetAllSCEVInLoopUnroll));
PM.add(createLoopDistributePass());
addVectorPasses(PM, /* IsLTO */ true);
addVectorPasses(PM, /* IsFullLTO */ true);
addExtensionsToPM(EP_Peephole, PM);