1 //===-- X86AsmPrinter.h - Convert X86 LLVM code to Intel assembly ---------===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by the LLVM research group and is distributed under
6 // the University of Illinois Open Source License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file the shared super class printer that converts from our internal
11 // representation of machine-dependent LLVM code to Intel and AT&T format
12 // assembly language. This printer is the output mechanism used by `llc'.
14 //===----------------------------------------------------------------------===//
16 #ifndef X86ASMPRINTER_H
17 #define X86ASMPRINTER_H
20 #include "llvm/CodeGen/AsmPrinter.h"
21 #include "llvm/ADT/Statistic.h"
28 extern Statistic<> EmittedInsts;
30 struct X86SharedAsmPrinter : public AsmPrinter {
31 X86SharedAsmPrinter(std::ostream &O, TargetMachine &TM)
32 : AsmPrinter(O, TM), forCygwin(false), forDarwin(false) { }
34 bool doInitialization(Module &M);
35 void printConstantPool(MachineConstantPool *MCP);
36 bool doFinalization(Module &M);
41 // Necessary for Darwin to print out the apprioriate types of linker stubs
42 std::set<std::string> FnStubs, GVStubs, LinkOnceStubs;
44 inline static bool isScale(const MachineOperand &MO) {
45 return MO.isImmediate() &&
46 (MO.getImmedValue() == 1 || MO.getImmedValue() == 2 ||
47 MO.getImmedValue() == 4 || MO.getImmedValue() == 8);
50 inline static bool isMem(const MachineInstr *MI, unsigned Op) {
51 if (MI->getOperand(Op).isFrameIndex()) return true;
52 if (MI->getOperand(Op).isConstantPoolIndex()) return true;
53 return Op+4 <= MI->getNumOperands() &&
54 MI->getOperand(Op ).isRegister() && isScale(MI->getOperand(Op+1)) &&
55 MI->getOperand(Op+2).isRegister() && (MI->getOperand(Op+3).isImmediate()||
56 MI->getOperand(Op+3).isGlobalAddress());
59 // SwitchSection - Switch to the specified section of the executable if we are
61 inline static void SwitchSection(std::ostream &OS, std::string &CurSection,
62 const char *NewSection) {
63 if (CurSection != NewSection) {
64 CurSection = NewSection;
65 if (!CurSection.empty())
66 OS << "\t" << NewSection << "\n";
71 } // end namespace x86
72 } // end namespace llvm