1 //===-- X86TargetMachine.cpp - Define TargetMachine for the X86 -----------===//
3 // This file defines the X86 specific subclass of TargetMachine.
5 //===----------------------------------------------------------------------===//
7 #include "X86TargetMachine.h"
8 #include "llvm/Target/TargetMachineImpls.h"
9 #include "llvm/CodeGen/MachineFunction.h"
10 #include "llvm/PassManager.h"
14 // allocateX86TargetMachine - Allocate and return a subclass of TargetMachine
15 // that implements the X86 backend.
17 TargetMachine *allocateX86TargetMachine() { return new X86TargetMachine(); }
20 /// X86TargetMachine ctor - Create an ILP32 architecture model
22 X86TargetMachine::X86TargetMachine() : TargetMachine("X86", 1, 4, 4, 4) {
26 /// addPassesToJITCompile - Add passes to the specified pass manager to
27 /// implement a fast dynamic compiler for this target. Return true if this is
28 /// not supported for this target.
30 bool X86TargetMachine::addPassesToJITCompile(PassManager &PM) {
31 PM.add(createSimpleX86InstructionSelector(*this));
33 // TODO: optional optimizations go here
35 // Print the instruction selected machine code...
36 PM.add(createMachineFunctionPrinterPass());
38 // Perform register allocation to convert to a concrete x86 representation
39 //PM.add(createSimpleX86RegisterAllocator(*this));
41 PM.add(createX86CodePrinterPass(*this, std::cerr));
43 //PM.add(createEmitX86CodeToMemory(*this));
45 return false; // success!