Introduce MCCodeGenInfo, which keeps information that can affect codegen

[oota-llvm.git] / lib / Target / Mips / MipsTargetMachine.cpp

diff --git a/lib/Target/Mips/MipsTargetMachine.cpp b/lib/Target/Mips/MipsTargetMachine.cpp
index 372e267d4629f99ddb20dba7183cf0434623a83d..a195a48961a23c223b9a5d8a5acd02205fa32c68 100644 (file)
--- a/lib/Target/Mips/MipsTargetMachine.cpp
+++ b/lib/Target/Mips/MipsTargetMachine.cpp
@@ -2,8 +2,8 @@
 //
 //                     The LLVM Compiler Infrastructure
 //
-// This file was developed by Bruno Cardoso Lopes and is distributed under the
-// University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
@@ -12,73 +12,70 @@
 //===----------------------------------------------------------------------===//
 
 #include "Mips.h"
-#include "MipsTargetAsmInfo.h"
 #include "MipsTargetMachine.h"
-#include "llvm/Module.h"
 #include "llvm/PassManager.h"
-#include "llvm/Target/TargetMachineRegistry.h"
+#include "llvm/Target/TargetRegistry.h"
 using namespace llvm;
 
-namespace {
+extern "C" void LLVMInitializeMipsTarget() {
   // Register the target.
-  RegisterTarget<MipsTargetMachine> X("mips", "  Mips");
-}
-
-const TargetAsmInfo *MipsTargetMachine::
-createTargetAsmInfo() const 
-{
-  return new MipsTargetAsmInfo(*this);
+  RegisterTargetMachine<MipsTargetMachine> X(TheMipsTarget);
+  RegisterTargetMachine<MipselTargetMachine> Y(TheMipselTarget);
 }
 
 // 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, so StackGrowsUp is used.
+// offset from the stack/frame pointer, using StackGrowsUp enables
+// an easier handling.
+// Using CodeModel::Large enables different CALL behavior.
 MipsTargetMachine::
-MipsTargetMachine(const Module &M, const std::string &FS): 
-  Subtarget(*this, M, FS), DataLayout("E-p:32:32:32"), 
-  InstrInfo(*this), FrameInfo(TargetFrameInfo::StackGrowsUp, 8, 0),
-  TLInfo(*this) {}
-
-// return 0 and must specify -march to gen MIPS code.
-unsigned MipsTargetMachine::
-getModuleMatchQuality(const Module &M) 
-{
-  // We strongly match "mips-*".
-  std::string TT = M.getTargetTriple();
-  if (TT.size() >= 5 && std::string(TT.begin(), TT.begin()+5) == "mips-")
-    return 20;
-  
-  return 0;
+MipsTargetMachine(const Target &T, StringRef TT,
+                  StringRef CPU, StringRef FS, Reloc::Model RM,
+                  bool isLittle=false):
+  LLVMTargetMachine(T, TT, CPU, FS, RM),
+  Subtarget(TT, CPU, FS, isLittle),
+  DataLayout(isLittle ? 
+             std::string("e-p:32:32:32-i8:8:32-i16:16:32-i64:64:64-n32") :
+             std::string("E-p:32:32:32-i8:8:32-i16:16:32-i64:64:64-n32")),
+  InstrInfo(*this),
+  FrameLowering(Subtarget),
+  TLInfo(*this), TSInfo(*this) {
 }
 
-// Install an instruction selector pass using 
+MipselTargetMachine::
+MipselTargetMachine(const Target &T, StringRef TT,
+                    StringRef CPU, StringRef FS, Reloc::Model RM) :
+  MipsTargetMachine(T, TT, CPU, FS, RM, true) {}
+
+// Install an instruction selector pass using
 // the ISelDag to gen Mips code.
 bool MipsTargetMachine::
-addInstSelector(FunctionPassManager &PM, bool Fast) 
+addInstSelector(PassManagerBase &PM, CodeGenOpt::Level OptLevel)
 {
   PM.add(createMipsISelDag(*this));
   return false;
 }
 
-// Implemented by targets that want to run passes immediately before 
-// machine code is emitted. return true if -print-machineinstrs should 
+// 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(FunctionPassManager &PM, bool Fast) 
+addPreEmitPass(PassManagerBase &PM, CodeGenOpt::Level OptLevel)
 {
   PM.add(createMipsDelaySlotFillerPass(*this));
   return true;
 }
 
-// Implements the AssemblyEmitter for the target. Must return
-// true if AssemblyEmitter is supported
 bool MipsTargetMachine::
-addAssemblyEmitter(FunctionPassManager &PM, bool Fast, 
-                   std::ostream &Out) 
-{
-  // Output assembly language.
-  PM.add(createMipsCodePrinterPass(Out, *this));
-  return false;
+addPreRegAlloc(PassManagerBase &PM, CodeGenOpt::Level OptLevel) {
+  PM.add(createMipsEmitGPRestorePass(*this));
+  return true;
+}
+
+bool MipsTargetMachine::
+addPostRegAlloc(PassManagerBase &PM, CodeGenOpt::Level OptLevel) {
+  PM.add(createMipsExpandPseudoPass(*this));
+  return true;
 }