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"
26 extern Statistic<> EmittedInsts;
28 struct X86SharedAsmPrinter : public AsmPrinter {
29 X86SharedAsmPrinter(std::ostream &O, TargetMachine &TM)
30 : AsmPrinter(O, TM), forCygwin(false), forDarwin(false) { }
32 bool doInitialization(Module &M);
33 void printConstantPool(MachineConstantPool *MCP);
34 bool doFinalization(Module &M);
39 inline static bool isScale(const MachineOperand &MO) {
40 return MO.isImmediate() &&
41 (MO.getImmedValue() == 1 || MO.getImmedValue() == 2 ||
42 MO.getImmedValue() == 4 || MO.getImmedValue() == 8);
45 inline static bool isMem(const MachineInstr *MI, unsigned Op) {
46 if (MI->getOperand(Op).isFrameIndex()) return true;
47 if (MI->getOperand(Op).isConstantPoolIndex()) return true;
48 return Op+4 <= MI->getNumOperands() &&
49 MI->getOperand(Op ).isRegister() && isScale(MI->getOperand(Op+1)) &&
50 MI->getOperand(Op+2).isRegister() && (MI->getOperand(Op+3).isImmediate()||
51 MI->getOperand(Op+3).isGlobalAddress());
54 // SwitchSection - Switch to the specified section of the executable if we are
56 inline static void SwitchSection(std::ostream &OS, std::string &CurSection,
57 const char *NewSection) {
58 if (CurSection != NewSection) {
59 CurSection = NewSection;
60 if (!CurSection.empty())
61 OS << "\t" << NewSection << "\n";
66 } // end namespace x86
67 } // end namespace llvm