//
//===----------------------------------------------------------------------===//
-#include "Mips.h"
#include "MipsTargetMachine.h"
+#include "Mips.h"
+#include "Mips16FrameLowering.h"
+#include "Mips16HardFloat.h"
+#include "Mips16ISelDAGToDAG.h"
+#include "Mips16ISelLowering.h"
+#include "Mips16InstrInfo.h"
+#include "MipsFrameLowering.h"
+#include "MipsInstrInfo.h"
+#include "MipsModuleISelDAGToDAG.h"
+#include "MipsOs16.h"
+#include "MipsSEFrameLowering.h"
+#include "MipsSEISelDAGToDAG.h"
+#include "MipsSEISelLowering.h"
+#include "MipsSEInstrInfo.h"
+#include "llvm/Analysis/TargetTransformInfo.h"
+#include "llvm/CodeGen/Passes.h"
#include "llvm/PassManager.h"
+#include "llvm/Support/Debug.h"
#include "llvm/Support/TargetRegistry.h"
+#include "llvm/Support/raw_ostream.h"
+#include "llvm/Transforms/Scalar.h"
using namespace llvm;
+#define DEBUG_TYPE "mips"
+
extern "C" void LLVMInitializeMipsTarget() {
// Register the target.
RegisterTargetMachine<MipsebTargetMachine> X(TheMipsTarget);
RegisterTargetMachine<MipselTargetMachine> Y(TheMipselTarget);
- RegisterTargetMachine<Mips64ebTargetMachine> A(TheMips64Target);
- RegisterTargetMachine<Mips64elTargetMachine> B(TheMips64elTarget);
+ RegisterTargetMachine<MipsebTargetMachine> A(TheMips64Target);
+ RegisterTargetMachine<MipselTargetMachine> B(TheMips64elTarget);
}
-// DataLayout --> Big-endian, 32-bit pointer/ABI/alignment
-// The stack is always 8 byte aligned
// On function prologue, the stack is created by decrementing
// its pointer. Once decremented, all references are done with positive
// offset from the stack/frame pointer, using StackGrowsUp enables
// an easier handling.
// Using CodeModel::Large enables different CALL behavior.
-MipsTargetMachine::
-MipsTargetMachine(const Target &T, StringRef TT,
- StringRef CPU, StringRef FS,
- Reloc::Model RM, CodeModel::Model CM,
- CodeGenOpt::Level OL,
- bool isLittle):
- LLVMTargetMachine(T, TT, CPU, FS, RM, CM, OL),
- Subtarget(TT, CPU, FS, isLittle),
- DataLayout(isLittle ?
- (Subtarget.isABI_N64() ?
- "e-p:64:64:64-i8:8:32-i16:16:32-i64:64:64-f128:128:128-n32" :
- "e-p:32:32:32-i8:8:32-i16:16:32-i64:64:64-n32") :
- (Subtarget.isABI_N64() ?
- "E-p:64:64:64-i8:8:32-i16:16:32-i64:64:64-f128:128:128-n32" :
- "E-p:32:32:32-i8:8:32-i16:16:32-i64:64:64-n32")),
- InstrInfo(*this),
- FrameLowering(Subtarget),
- TLInfo(*this), TSInfo(*this), JITInfo() {
+MipsTargetMachine::MipsTargetMachine(const Target &T, StringRef TT,
+ StringRef CPU, StringRef FS,
+ const TargetOptions &Options,
+ Reloc::Model RM, CodeModel::Model CM,
+ CodeGenOpt::Level OL, bool isLittle)
+ : LLVMTargetMachine(T, TT, CPU, FS, Options, RM, CM, OL),
+ Subtarget(nullptr), DefaultSubtarget(TT, CPU, FS, isLittle, this),
+ NoMips16Subtarget(TT, CPU, FS.empty() ? "-mips16" : FS.str() + ",-mips16",
+ isLittle, this),
+ Mips16Subtarget(TT, CPU, FS.empty() ? "+mips16" : FS.str() + ",+mips16",
+ isLittle, this) {
+ Subtarget = &DefaultSubtarget;
+ initAsmInfo();
}
+void MipsebTargetMachine::anchor() { }
+
MipsebTargetMachine::
MipsebTargetMachine(const Target &T, StringRef TT,
- StringRef CPU, StringRef FS,
+ StringRef CPU, StringRef FS, const TargetOptions &Options,
Reloc::Model RM, CodeModel::Model CM,
- CodeGenOpt::Level OL) :
- MipsTargetMachine(T, TT, CPU, FS, RM, CM, OL, false) {}
+ CodeGenOpt::Level OL)
+ : MipsTargetMachine(T, TT, CPU, FS, Options, RM, CM, OL, false) {}
+
+void MipselTargetMachine::anchor() { }
MipselTargetMachine::
MipselTargetMachine(const Target &T, StringRef TT,
- StringRef CPU, StringRef FS,
+ StringRef CPU, StringRef FS, const TargetOptions &Options,
Reloc::Model RM, CodeModel::Model CM,
- CodeGenOpt::Level OL) :
- MipsTargetMachine(T, TT, CPU, FS, RM, CM, OL, true) {}
-
-Mips64ebTargetMachine::
-Mips64ebTargetMachine(const Target &T, StringRef TT,
- StringRef CPU, StringRef FS,
- Reloc::Model RM, CodeModel::Model CM,
- CodeGenOpt::Level OL) :
- MipsTargetMachine(T, TT, CPU, FS, RM, CM, OL, false) {}
-
-Mips64elTargetMachine::
-Mips64elTargetMachine(const Target &T, StringRef TT,
- StringRef CPU, StringRef FS,
- Reloc::Model RM, CodeModel::Model CM,
- CodeGenOpt::Level OL) :
- MipsTargetMachine(T, TT, CPU, FS, RM, CM, OL, true) {}
+ CodeGenOpt::Level OL)
+ : MipsTargetMachine(T, TT, CPU, FS, Options, RM, CM, OL, true) {}
+
+void MipsTargetMachine::resetSubtarget(MachineFunction *MF) {
+ DEBUG(dbgs() << "resetSubtarget\n");
+ AttributeSet FnAttrs = MF->getFunction()->getAttributes();
+ bool Mips16Attr = FnAttrs.hasAttribute(AttributeSet::FunctionIndex, "mips16");
+ bool NoMips16Attr =
+ FnAttrs.hasAttribute(AttributeSet::FunctionIndex, "nomips16");
+ assert(!(Mips16Attr && NoMips16Attr) &&
+ "mips16 and nomips16 specified on the same function");
+ if (Mips16Attr)
+ Subtarget = &Mips16Subtarget;
+ else if (NoMips16Attr)
+ Subtarget = &NoMips16Subtarget;
+ else
+ Subtarget = &DefaultSubtarget;
+ MF->setSubtarget(Subtarget);
+ return;
+}
+namespace {
+/// Mips Code Generator Pass Configuration Options.
+class MipsPassConfig : public TargetPassConfig {
+public:
+ MipsPassConfig(MipsTargetMachine *TM, PassManagerBase &PM)
+ : TargetPassConfig(TM, PM) {
+ // The current implementation of long branch pass requires a scratch
+ // register ($at) to be available before branch instructions. Tail merging
+ // can break this requirement, so disable it when long branch pass is
+ // enabled.
+ EnableTailMerge = !getMipsSubtarget().enableLongBranchPass();
+ }
+
+ MipsTargetMachine &getMipsTargetMachine() const {
+ return getTM<MipsTargetMachine>();
+ }
+
+ const MipsSubtarget &getMipsSubtarget() const {
+ return *getMipsTargetMachine().getSubtargetImpl();
+ }
+
+ void addIRPasses() override;
+ bool addInstSelector() override;
+ void addMachineSSAOptimization() override;
+ bool addPreEmitPass() override;
+
+ bool addPreRegAlloc() override;
+
+};
+} // namespace
+
+TargetPassConfig *MipsTargetMachine::createPassConfig(PassManagerBase &PM) {
+ return new MipsPassConfig(this, PM);
+}
+
+void MipsPassConfig::addIRPasses() {
+ TargetPassConfig::addIRPasses();
+ if (getMipsSubtarget().os16())
+ addPass(createMipsOs16(getMipsTargetMachine()));
+ if (getMipsSubtarget().inMips16HardFloat())
+ addPass(createMips16HardFloat(getMipsTargetMachine()));
+}
// Install an instruction selector pass using
// the ISelDag to gen Mips code.
-bool MipsTargetMachine::
-addInstSelector(PassManagerBase &PM)
-{
- PM.add(createMipsISelDag(*this));
+bool MipsPassConfig::addInstSelector() {
+ addPass(createMipsModuleISelDag(getMipsTargetMachine()));
+ addPass(createMips16ISelDag(getMipsTargetMachine()));
+ addPass(createMipsSEISelDag(getMipsTargetMachine()));
return false;
}
-// Implemented by targets that want to run passes immediately before
-// machine code is emitted. return true if -print-machineinstrs should
-// print out the code after the passes.
-bool MipsTargetMachine::
-addPreEmitPass(PassManagerBase &PM)
-{
- PM.add(createMipsDelaySlotFillerPass(*this));
- return true;
+void MipsPassConfig::addMachineSSAOptimization() {
+ addPass(createMipsOptimizePICCallPass(getMipsTargetMachine()));
+ TargetPassConfig::addMachineSSAOptimization();
}
-bool MipsTargetMachine::
-addPreRegAlloc(PassManagerBase &PM) {
- // Do not restore $gp if target is Mips64.
- // In N32/64, $gp is a callee-saved register.
- if (!Subtarget.hasMips64())
- PM.add(createMipsEmitGPRestorePass(*this));
- return true;
+bool MipsPassConfig::addPreRegAlloc() {
+ if (getOptLevel() == CodeGenOpt::None) {
+ addPass(createMipsOptimizePICCallPass(getMipsTargetMachine()));
+ return true;
+ }
+ else
+ return false;
}
-bool MipsTargetMachine::
-addPostRegAlloc(PassManagerBase &PM) {
- PM.add(createMipsExpandPseudoPass(*this));
+void MipsTargetMachine::addAnalysisPasses(PassManagerBase &PM) {
+ if (Subtarget->allowMixed16_32()) {
+ DEBUG(errs() << "No ");
+ //FIXME: The Basic Target Transform Info
+ // pass needs to become a function pass instead of
+ // being an immutable pass and then this method as it exists now
+ // would be unnecessary.
+ PM.add(createNoTargetTransformInfoPass());
+ } else
+ LLVMTargetMachine::addAnalysisPasses(PM);
+ DEBUG(errs() << "Target Transform Info Pass Added\n");
+}
+
+// Implemented by targets that want to run passes immediately before
+// machine code is emitted. return true if -print-machineinstrs should
+// print out the code after the passes.
+bool MipsPassConfig::addPreEmitPass() {
+ MipsTargetMachine &TM = getMipsTargetMachine();
+ addPass(createMipsDelaySlotFillerPass(TM));
+ addPass(createMipsLongBranchPass(TM));
+ addPass(createMipsConstantIslandPass(TM));
return true;
}
PM.add(createMipsJITCodeEmitterPass(*this, JCE));
return false;
}
-
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