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-rw-r--r--lib/CodeGen/LLVMTargetMachine.cpp141
1 files changed, 35 insertions, 106 deletions
diff --git a/lib/CodeGen/LLVMTargetMachine.cpp b/lib/CodeGen/LLVMTargetMachine.cpp
index be3b258315bb..f2defb4fd623 100644
--- a/lib/CodeGen/LLVMTargetMachine.cpp
+++ b/lib/CodeGen/LLVMTargetMachine.cpp
@@ -11,7 +11,6 @@
//
//===----------------------------------------------------------------------===//
-#include "llvm/Target/TargetMachine.h"
#include "llvm/Analysis/Passes.h"
#include "llvm/CodeGen/AsmPrinter.h"
#include "llvm/CodeGen/BasicTTIImpl.h"
@@ -31,21 +30,11 @@
#include "llvm/Support/FormattedStream.h"
#include "llvm/Support/TargetRegistry.h"
#include "llvm/Target/TargetLoweringObjectFile.h"
+#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/Transforms/Scalar.h"
using namespace llvm;
-// Enable or disable FastISel. Both options are needed, because
-// FastISel is enabled by default with -fast, and we wish to be
-// able to enable or disable fast-isel independently from -O0.
-static cl::opt<cl::boolOrDefault>
-EnableFastISelOption("fast-isel", cl::Hidden,
- cl::desc("Enable the \"fast\" instruction selector"));
-
-static cl::opt<cl::boolOrDefault>
- EnableGlobalISel("global-isel", cl::Hidden,
- cl::desc("Enable the \"global\" instruction selector"));
-
void LLVMTargetMachine::initAsmInfo() {
MRI = TheTarget.createMCRegInfo(getTargetTriple().str());
MII = TheTarget.createMCInstrInfo();
@@ -71,8 +60,7 @@ void LLVMTargetMachine::initAsmInfo() {
TmpAsmInfo->setPreserveAsmComments(Options.MCOptions.PreserveAsmComments);
- if (Options.CompressDebugSections)
- TmpAsmInfo->setCompressDebugSections(DebugCompressionType::DCT_ZlibGnu);
+ TmpAsmInfo->setCompressDebugSections(Options.CompressDebugSections);
TmpAsmInfo->setRelaxELFRelocations(Options.RelaxELFRelocations);
@@ -106,9 +94,7 @@ static MCContext *
addPassesToGenerateCode(LLVMTargetMachine *TM, PassManagerBase &PM,
bool DisableVerify, AnalysisID StartBefore,
AnalysisID StartAfter, AnalysisID StopBefore,
- AnalysisID StopAfter,
- MachineFunctionInitializer *MFInitializer = nullptr) {
-
+ AnalysisID StopAfter) {
// Targets may override createPassConfig to provide a target-specific
// subclass.
TargetPassConfig *PassConfig = TM->createPassConfig(PM);
@@ -117,99 +103,22 @@ addPassesToGenerateCode(LLVMTargetMachine *TM, PassManagerBase &PM,
// Set PassConfig options provided by TargetMachine.
PassConfig->setDisableVerify(DisableVerify);
PM.add(PassConfig);
-
- // When in emulated TLS mode, add the LowerEmuTLS pass.
- if (TM->Options.EmulatedTLS)
- PM.add(createLowerEmuTLSPass());
-
- PM.add(createPreISelIntrinsicLoweringPass());
-
- // Add internal analysis passes from the target machine.
- PM.add(createTargetTransformInfoWrapperPass(TM->getTargetIRAnalysis()));
-
- PassConfig->addIRPasses();
-
- PassConfig->addCodeGenPrepare();
-
- PassConfig->addPassesToHandleExceptions();
-
- PassConfig->addISelPrepare();
-
MachineModuleInfo *MMI = new MachineModuleInfo(TM);
- MMI->setMachineFunctionInitializer(MFInitializer);
PM.add(MMI);
- // Enable FastISel with -fast, but allow that to be overridden.
- TM->setO0WantsFastISel(EnableFastISelOption != cl::BOU_FALSE);
- if (EnableFastISelOption == cl::BOU_TRUE ||
- (TM->getOptLevel() == CodeGenOpt::None &&
- TM->getO0WantsFastISel()))
- TM->setFastISel(true);
-
- // Ask the target for an isel.
- // Enable GlobalISel if the target wants to, but allow that to be overriden.
- if (EnableGlobalISel == cl::BOU_TRUE || (EnableGlobalISel == cl::BOU_UNSET &&
- PassConfig->isGlobalISelEnabled())) {
- if (PassConfig->addIRTranslator())
- return nullptr;
-
- PassConfig->addPreLegalizeMachineIR();
-
- if (PassConfig->addLegalizeMachineIR())
- return nullptr;
-
- // Before running the register bank selector, ask the target if it
- // wants to run some passes.
- PassConfig->addPreRegBankSelect();
-
- if (PassConfig->addRegBankSelect())
- return nullptr;
-
- PassConfig->addPreGlobalInstructionSelect();
-
- if (PassConfig->addGlobalInstructionSelect())
- return nullptr;
-
- // Pass to reset the MachineFunction if the ISel failed.
- PM.add(createResetMachineFunctionPass(
- PassConfig->reportDiagnosticWhenGlobalISelFallback(),
- PassConfig->isGlobalISelAbortEnabled()));
-
- // Provide a fallback path when we do not want to abort on
- // not-yet-supported input.
- if (!PassConfig->isGlobalISelAbortEnabled() &&
- PassConfig->addInstSelector())
- return nullptr;
-
- } else if (PassConfig->addInstSelector())
+ if (PassConfig->addISelPasses())
return nullptr;
-
PassConfig->addMachinePasses();
-
PassConfig->setInitialized();
return &MMI->getContext();
}
-bool LLVMTargetMachine::addPassesToEmitFile(
- PassManagerBase &PM, raw_pwrite_stream &Out, CodeGenFileType FileType,
- bool DisableVerify, AnalysisID StartBefore, AnalysisID StartAfter,
- AnalysisID StopBefore, AnalysisID StopAfter,
- MachineFunctionInitializer *MFInitializer) {
- // Add common CodeGen passes.
- MCContext *Context =
- addPassesToGenerateCode(this, PM, DisableVerify, StartBefore, StartAfter,
- StopBefore, StopAfter, MFInitializer);
- if (!Context)
- return true;
-
- if (StopBefore || StopAfter) {
- PM.add(createPrintMIRPass(Out));
- return false;
- }
-
+bool LLVMTargetMachine::addAsmPrinter(PassManagerBase &PM,
+ raw_pwrite_stream &Out, CodeGenFileType FileType,
+ MCContext &Context) {
if (Options.MCOptions.MCSaveTempLabels)
- Context->setAllowTemporaryLabels(false);
+ Context.setAllowTemporaryLabels(false);
const MCSubtargetInfo &STI = *getMCSubtargetInfo();
const MCAsmInfo &MAI = *getMCAsmInfo();
@@ -226,14 +135,14 @@ bool LLVMTargetMachine::addPassesToEmitFile(
// Create a code emitter if asked to show the encoding.
MCCodeEmitter *MCE = nullptr;
if (Options.MCOptions.ShowMCEncoding)
- MCE = getTarget().createMCCodeEmitter(MII, MRI, *Context);
+ MCE = getTarget().createMCCodeEmitter(MII, MRI, Context);
MCAsmBackend *MAB =
getTarget().createMCAsmBackend(MRI, getTargetTriple().str(), TargetCPU,
Options.MCOptions);
auto FOut = llvm::make_unique<formatted_raw_ostream>(Out);
MCStreamer *S = getTarget().createAsmStreamer(
- *Context, std::move(FOut), Options.MCOptions.AsmVerbose,
+ Context, std::move(FOut), Options.MCOptions.AsmVerbose,
Options.MCOptions.MCUseDwarfDirectory, InstPrinter, MCE, MAB,
Options.MCOptions.ShowMCInst);
AsmStreamer.reset(S);
@@ -242,7 +151,7 @@ bool LLVMTargetMachine::addPassesToEmitFile(
case CGFT_ObjectFile: {
// Create the code emitter for the target if it exists. If not, .o file
// emission fails.
- MCCodeEmitter *MCE = getTarget().createMCCodeEmitter(MII, MRI, *Context);
+ MCCodeEmitter *MCE = getTarget().createMCCodeEmitter(MII, MRI, Context);
MCAsmBackend *MAB =
getTarget().createMCAsmBackend(MRI, getTargetTriple().str(), TargetCPU,
Options.MCOptions);
@@ -250,11 +159,11 @@ bool LLVMTargetMachine::addPassesToEmitFile(
return true;
// Don't waste memory on names of temp labels.
- Context->setUseNamesOnTempLabels(false);
+ Context.setUseNamesOnTempLabels(false);
Triple T(getTargetTriple().str());
AsmStreamer.reset(getTarget().createMCObjectStreamer(
- T, *Context, *MAB, Out, MCE, STI, Options.MCOptions.MCRelaxAll,
+ T, Context, *MAB, Out, MCE, STI, Options.MCOptions.MCRelaxAll,
Options.MCOptions.MCIncrementalLinkerCompatible,
/*DWARFMustBeAtTheEnd*/ true));
break;
@@ -262,7 +171,7 @@ bool LLVMTargetMachine::addPassesToEmitFile(
case CGFT_Null:
// The Null output is intended for use for performance analysis and testing,
// not real users.
- AsmStreamer.reset(getTarget().createNullStreamer(*Context));
+ AsmStreamer.reset(getTarget().createNullStreamer(Context));
break;
}
@@ -273,8 +182,28 @@ bool LLVMTargetMachine::addPassesToEmitFile(
return true;
PM.add(Printer);
- PM.add(createFreeMachineFunctionPass());
+ return false;
+}
+
+bool LLVMTargetMachine::addPassesToEmitFile(
+ PassManagerBase &PM, raw_pwrite_stream &Out, CodeGenFileType FileType,
+ bool DisableVerify, AnalysisID StartBefore, AnalysisID StartAfter,
+ AnalysisID StopBefore, AnalysisID StopAfter) {
+ // Add common CodeGen passes.
+ MCContext *Context =
+ addPassesToGenerateCode(this, PM, DisableVerify, StartBefore, StartAfter,
+ StopBefore, StopAfter);
+ if (!Context)
+ return true;
+ if (StopBefore || StopAfter) {
+ PM.add(createPrintMIRPass(Out));
+ } else {
+ if (addAsmPrinter(PM, Out, FileType, *Context))
+ return true;
+ }
+
+ PM.add(createFreeMachineFunctionPass());
return false;
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-08-03 00:57:44 +0000