//
//===----------------------------------------------------------------------===//
-#include "llvm/MC/MCAsmInfo.h"
#include "llvm/Target/TargetMachine.h"
-#include "llvm/Target/TargetOptions.h"
+#include "llvm/Analysis/TargetTransformInfo.h"
+#include "llvm/CodeGen/MachineFunction.h"
+#include "llvm/IR/Function.h"
+#include "llvm/IR/GlobalAlias.h"
+#include "llvm/IR/GlobalValue.h"
+#include "llvm/IR/GlobalVariable.h"
+#include "llvm/IR/Mangler.h"
+#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/MC/MCCodeGenInfo.h"
+#include "llvm/MC/MCContext.h"
+#include "llvm/MC/MCInstrInfo.h"
+#include "llvm/MC/MCSectionMachO.h"
+#include "llvm/MC/MCTargetOptions.h"
+#include "llvm/MC/SectionKind.h"
+#include "llvm/IR/LegacyPassManager.h"
#include "llvm/Support/CommandLine.h"
+#include "llvm/Target/TargetLowering.h"
+#include "llvm/Target/TargetLoweringObjectFile.h"
+#include "llvm/Target/TargetSubtargetInfo.h"
using namespace llvm;
-//---------------------------------------------------------------------------
-// Command-line options that tend to be useful on more than one back-end.
-//
-
-namespace llvm {
- bool StrongPHIElim;
- bool EnableMachineSched;
- bool HasDivModLibcall;
- bool AsmVerbosityDefault(false);
-}
-
-static cl::opt<bool>
-DataSections("fdata-sections",
- cl::desc("Emit data into separate sections"),
- cl::init(false));
-static cl::opt<bool>
-FunctionSections("ffunction-sections",
- cl::desc("Emit functions into separate sections"),
- cl::init(false));
-
//---------------------------------------------------------------------------
// TargetMachine Class
//
-TargetMachine::TargetMachine(const Target &T,
- StringRef TT, StringRef CPU, StringRef FS,
+TargetMachine::TargetMachine(const Target &T, StringRef DataLayoutString,
+ const Triple &TT, StringRef CPU, StringRef FS,
const TargetOptions &Options)
- : TheTarget(T), TargetTriple(TT), TargetCPU(CPU), TargetFS(FS),
- CodeGenInfo(0), AsmInfo(0),
- MCRelaxAll(false),
- MCNoExecStack(false),
- MCSaveTempLabels(false),
- MCUseLoc(true),
- MCUseCFI(true),
- MCUseDwarfDirectory(false),
- Options(Options) {
-}
+ : TheTarget(T), DL(DataLayoutString), TargetTriple(TT), TargetCPU(CPU),
+ TargetFS(FS), CodeGenInfo(nullptr), AsmInfo(nullptr), MRI(nullptr),
+ MII(nullptr), STI(nullptr), RequireStructuredCFG(false),
+ Options(Options) {}
TargetMachine::~TargetMachine() {
delete CodeGenInfo;
delete AsmInfo;
+ delete MRI;
+ delete MII;
+ delete STI;
+}
+
+/// \brief Reset the target options based on the function's attributes.
+// FIXME: This function needs to go away for a number of reasons:
+// a) global state on the TargetMachine is terrible in general,
+// b) there's no default state here to keep,
+// c) these target options should be passed only on the function
+// and not on the TargetMachine (via TargetOptions) at all.
+void TargetMachine::resetTargetOptions(const Function &F) const {
+#define RESET_OPTION(X, Y) \
+ do { \
+ if (F.hasFnAttribute(Y)) \
+ Options.X = (F.getFnAttribute(Y).getValueAsString() == "true"); \
+ } while (0)
+
+ RESET_OPTION(LessPreciseFPMADOption, "less-precise-fpmad");
+ RESET_OPTION(UnsafeFPMath, "unsafe-fp-math");
+ RESET_OPTION(NoInfsFPMath, "no-infs-fp-math");
+ RESET_OPTION(NoNaNsFPMath, "no-nans-fp-math");
}
/// getRelocationModel - Returns the code generation relocation model. The
return CodeGenInfo->getCodeModel();
}
+/// Get the IR-specified TLS model for Var.
+static TLSModel::Model getSelectedTLSModel(const GlobalValue *GV) {
+ switch (GV->getThreadLocalMode()) {
+ case GlobalVariable::NotThreadLocal:
+ llvm_unreachable("getSelectedTLSModel for non-TLS variable");
+ break;
+ case GlobalVariable::GeneralDynamicTLSModel:
+ return TLSModel::GeneralDynamic;
+ case GlobalVariable::LocalDynamicTLSModel:
+ return TLSModel::LocalDynamic;
+ case GlobalVariable::InitialExecTLSModel:
+ return TLSModel::InitialExec;
+ case GlobalVariable::LocalExecTLSModel:
+ return TLSModel::LocalExec;
+ }
+ llvm_unreachable("invalid TLS model");
+}
+
+TLSModel::Model TargetMachine::getTLSModel(const GlobalValue *GV) const {
+ bool isLocal = GV->hasLocalLinkage();
+ bool isDeclaration = GV->isDeclaration();
+ bool isPIC = getRelocationModel() == Reloc::PIC_;
+ bool isPIE = Options.PositionIndependentExecutable;
+ // FIXME: what should we do for protected and internal visibility?
+ // For variables, is internal different from hidden?
+ bool isHidden = GV->hasHiddenVisibility();
+
+ TLSModel::Model Model;
+ if (isPIC && !isPIE) {
+ if (isLocal || isHidden)
+ Model = TLSModel::LocalDynamic;
+ else
+ Model = TLSModel::GeneralDynamic;
+ } else {
+ if (!isDeclaration || isHidden)
+ Model = TLSModel::LocalExec;
+ else
+ Model = TLSModel::InitialExec;
+ }
+
+ // If the user specified a more specific model, use that.
+ TLSModel::Model SelectedModel = getSelectedTLSModel(GV);
+ if (SelectedModel > Model)
+ return SelectedModel;
+
+ return Model;
+}
+
/// getOptLevel - Returns the optimization level: None, Less,
/// Default, or Aggressive.
CodeGenOpt::Level TargetMachine::getOptLevel() const {
return CodeGenInfo->getOptLevel();
}
-bool TargetMachine::getAsmVerbosityDefault() {
- return AsmVerbosityDefault;
+void TargetMachine::setOptLevel(CodeGenOpt::Level Level) const {
+ if (CodeGenInfo)
+ CodeGenInfo->setOptLevel(Level);
}
-void TargetMachine::setAsmVerbosityDefault(bool V) {
- AsmVerbosityDefault = V;
+TargetIRAnalysis TargetMachine::getTargetIRAnalysis() {
+ return TargetIRAnalysis([this](const Function &F) {
+ return TargetTransformInfo(F.getParent()->getDataLayout());
+ });
}
-bool TargetMachine::getFunctionSections() {
- return FunctionSections;
+void TargetMachine::getNameWithPrefix(SmallVectorImpl<char> &Name,
+ const GlobalValue *GV, Mangler &Mang,
+ bool MayAlwaysUsePrivate) const {
+ if (MayAlwaysUsePrivate || !GV->hasPrivateLinkage()) {
+ // Simple case: If GV is not private, it is not important to find out if
+ // private labels are legal in this case or not.
+ Mang.getNameWithPrefix(Name, GV, false);
+ return;
+ }
+ const TargetLoweringObjectFile *TLOF = getObjFileLowering();
+ TLOF->getNameWithPrefix(Name, GV, Mang, *this);
}
-bool TargetMachine::getDataSections() {
- return DataSections;
+MCSymbol *TargetMachine::getSymbol(const GlobalValue *GV, Mangler &Mang) const {
+ SmallString<128> NameStr;
+ getNameWithPrefix(NameStr, GV, Mang);
+ const TargetLoweringObjectFile *TLOF = getObjFileLowering();
+ return TLOF->getContext().getOrCreateSymbol(NameStr);
}
-
-void TargetMachine::setFunctionSections(bool V) {
- FunctionSections = V;
-}
-
-void TargetMachine::setDataSections(bool V) {
- DataSections = V;
-}
-
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