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 "X86MachineFunctionInfo.h"
21 #include "X86TargetMachine.h"
22 #include "llvm/CodeGen/AsmPrinter.h"
23 #include "llvm/CodeGen/DwarfWriter.h"
24 #include "llvm/CodeGen/MachineModuleInfo.h"
25 #include "llvm/Support/Compiler.h"
31 struct VISIBILITY_HIDDEN X86SharedAsmPrinter : public AsmPrinter {
34 X86SharedAsmPrinter(std::ostream &O, X86TargetMachine &TM,
35 const TargetAsmInfo *T)
36 : AsmPrinter(O, TM, T), DW(O, this, T) {
37 Subtarget = &TM.getSubtarget<X86Subtarget>();
40 // We have to propagate some information about MachineFunction to
41 // AsmPrinter. It's ok, when we're printing the function, since we have
42 // access to MachineFunction and can get the appropriate MachineFunctionInfo.
43 // Unfortunately, this is not possible when we're printing reference to
44 // Function (e.g. calling it and so on). Even more, there is no way to get the
45 // corresponding MachineFunctions: it can even be not created at all. That's
46 // why we should use additional structure, when we're collecting all necessary
49 // This structure is using e.g. for name decoration for stdcall & fastcall'ed
50 // function, since we have to use arguments' size for decoration.
51 typedef std::map<const Function*, X86MachineFunctionInfo> FMFInfoMap;
52 FMFInfoMap FunctionInfoMap;
54 void decorateName(std::string& Name, const GlobalValue* GV);
56 bool doInitialization(Module &M);
57 bool doFinalization(Module &M);
59 void getAnalysisUsage(AnalysisUsage &AU) const {
61 if (Subtarget->isTargetDarwin() ||
62 Subtarget->isTargetELF() ||
63 Subtarget->isTargetCygMing()) {
64 AU.addRequired<MachineModuleInfo>();
66 MachineFunctionPass::getAnalysisUsage(AU);
69 const X86Subtarget *Subtarget;
71 // Necessary for Darwin to print out the apprioriate types of linker stubs
72 std::set<std::string> FnStubs, GVStubs, LinkOnceStubs;
74 // Necessary for dllexport support
75 std::set<std::string> DLLExportedFns, DLLExportedGVs;
77 inline static bool isScale(const MachineOperand &MO) {
78 return MO.isImmediate() &&
79 (MO.getImmedValue() == 1 || MO.getImmedValue() == 2 ||
80 MO.getImmedValue() == 4 || MO.getImmedValue() == 8);
83 inline static bool isMem(const MachineInstr *MI, unsigned Op) {
84 if (MI->getOperand(Op).isFrameIndex()) return true;
85 return Op+4 <= MI->getNumOperands() &&
86 MI->getOperand(Op ).isRegister() && isScale(MI->getOperand(Op+1)) &&
87 MI->getOperand(Op+2).isRegister() &&
88 (MI->getOperand(Op+3).isImmediate() ||
89 MI->getOperand(Op+3).isGlobalAddress() ||
90 MI->getOperand(Op+3).isConstantPoolIndex() ||
91 MI->getOperand(Op+3).isJumpTableIndex());
95 } // end namespace llvm