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[LTO] Remove legacy PM support 

We don't have any places setting NewPM=false anymore, so drop the
support code in LTOBackend.
This commit is contained in:
Nikita Popov 2022-04-13 10:35:42 +02:00
parent 69fcf6a79e
commit 0d86fc65ba
3 changed files with 2 additions and 44 deletions
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3
llvm/include/llvm/LTO/Config.h
View File

@ -57,9 +57,6 @@ struct Config {
unsigned OptLevel = 2;
bool DisableVerify = false;
/// Use the new pass manager
bool UseNewPM = true;
/// Use the standard optimization pipeline.
bool UseDefaultPipeline = false;

1
llvm/lib/LTO/LTO.cpp
View File

@ -134,7 +134,6 @@ void llvm::computeLTOCacheKey(
AddUnsigned(Conf.CGOptLevel);
AddUnsigned(Conf.CGFileType);
AddUnsigned(Conf.OptLevel);
AddUnsigned(Conf.UseNewPM);
AddUnsigned(Conf.Freestanding);
AddString(Conf.OptPipeline);
AddString(Conf.AAPipeline);

42
llvm/lib/LTO/LTOBackend.cpp
View File

@ -42,7 +42,6 @@
#include "llvm/Support/raw_ostream.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Transforms/IPO.h"
#include "llvm/Transforms/IPO/PassManagerBuilder.h"
#include "llvm/Transforms/Scalar/LoopPassManager.h"
#include "llvm/Transforms/Utils/FunctionImportUtils.h"
#include "llvm/Transforms/Utils/SplitModule.h"
@ -312,39 +311,6 @@ static void runNewPMPasses(const Config &Conf, Module &Mod, TargetMachine *TM,
MPM.run(Mod, MAM);
}
static void runOldPMPasses(const Config &Conf, Module &Mod, TargetMachine *TM,
bool IsThinLTO, ModuleSummaryIndex *ExportSummary,
const ModuleSummaryIndex *ImportSummary) {
legacy::PassManager passes;
passes.add(createTargetTransformInfoWrapperPass(TM->getTargetIRAnalysis()));
PassManagerBuilder PMB;
PMB.LibraryInfo = new TargetLibraryInfoImpl(Triple(TM->getTargetTriple()));
if (Conf.Freestanding)
PMB.LibraryInfo->disableAllFunctions();
PMB.Inliner = createFunctionInliningPass();
PMB.ExportSummary = ExportSummary;
PMB.ImportSummary = ImportSummary;
// Unconditionally verify input since it is not verified before this
// point and has unknown origin.
PMB.VerifyInput = true;
PMB.VerifyOutput = !Conf.DisableVerify;
PMB.LoopVectorize = true;
PMB.SLPVectorize = true;
PMB.OptLevel = Conf.OptLevel;
PMB.PGOSampleUse = Conf.SampleProfile;
PMB.EnablePGOCSInstrGen = Conf.RunCSIRInstr;
if (!Conf.RunCSIRInstr && !Conf.CSIRProfile.empty()) {
PMB.EnablePGOCSInstrUse = true;
PMB.PGOInstrUse = Conf.CSIRProfile;
}
if (IsThinLTO)
PMB.populateThinLTOPassManager(passes);
else
PMB.populateLTOPassManager(passes);
passes.run(Mod);
}
bool lto::opt(const Config &Conf, TargetMachine *TM, unsigned Task, Module &Mod,
bool IsThinLTO, ModuleSummaryIndex *ExportSummary,
const ModuleSummaryIndex *ImportSummary,
@ -367,12 +333,8 @@ bool lto::opt(const Config &Conf, TargetMachine *TM, unsigned Task, Module &Mod,
/*Cmdline*/ CmdArgs);
}
// FIXME: Plumb the combined index into the new pass manager.
if (Conf.UseNewPM || !Conf.OptPipeline.empty()) {
runNewPMPasses(Conf, Mod, TM, Conf.OptLevel, IsThinLTO, ExportSummary,
ImportSummary);
} else {
runOldPMPasses(Conf, Mod, TM, IsThinLTO, ExportSummary, ImportSummary);
}
runNewPMPasses(Conf, Mod, TM, Conf.OptLevel, IsThinLTO, ExportSummary,
ImportSummary);
return !Conf.PostOptModuleHook || Conf.PostOptModuleHook(Task, Mod);
}