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 "X86TargetMachine.h"
21 #include "llvm/CodeGen/AsmPrinter.h"
22 #include "llvm/CodeGen/DwarfWriter.h"
23 #include "llvm/CodeGen/MachineDebugInfo.h"
24 #include "llvm/ADT/Statistic.h"
30 extern Statistic<> EmittedInsts;
32 struct VISIBILITY_HIDDEN X86SharedAsmPrinter : public AsmPrinter {
35 X86SharedAsmPrinter(std::ostream &O, X86TargetMachine &TM,
36 const TargetAsmInfo *T)
37 : AsmPrinter(O, TM, T), DW(O, this, T) {
38 Subtarget = &TM.getSubtarget<X86Subtarget>();
41 bool doInitialization(Module &M);
42 bool doFinalization(Module &M);
44 void getAnalysisUsage(AnalysisUsage &AU) const {
46 if (Subtarget->isTargetDarwin()) {
47 AU.addRequired<MachineDebugInfo>();
49 MachineFunctionPass::getAnalysisUsage(AU);
52 const X86Subtarget *Subtarget;
54 // Necessary for Darwin to print out the apprioriate types of linker stubs
55 std::set<std::string> FnStubs, GVStubs, LinkOnceStubs;
57 inline static bool isScale(const MachineOperand &MO) {
58 return MO.isImmediate() &&
59 (MO.getImmedValue() == 1 || MO.getImmedValue() == 2 ||
60 MO.getImmedValue() == 4 || MO.getImmedValue() == 8);
63 inline static bool isMem(const MachineInstr *MI, unsigned Op) {
64 if (MI->getOperand(Op).isFrameIndex()) return true;
65 return Op+4 <= MI->getNumOperands() &&
66 MI->getOperand(Op ).isRegister() && isScale(MI->getOperand(Op+1)) &&
67 MI->getOperand(Op+2).isRegister() &&
68 (MI->getOperand(Op+3).isImmediate() ||
69 MI->getOperand(Op+3).isGlobalAddress() ||
70 MI->getOperand(Op+3).isConstantPoolIndex() ||
71 MI->getOperand(Op+3).isJumpTableIndex());
75 } // end namespace llvm