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/MachineDebugInfo.h"
25 #include "llvm/ADT/Statistic.h"
31 extern Statistic<> EmittedInsts;
33 // FIXME: Move this to CodeGen/AsmPrinter.h
40 struct VISIBILITY_HIDDEN X86SharedAsmPrinter : public AsmPrinter {
43 X86SharedAsmPrinter(std::ostream &O, X86TargetMachine &TM,
44 const TargetAsmInfo *T)
45 : AsmPrinter(O, TM, T), DW(O, this, T), X86PICStyle(PICStyle::GOT) {
46 Subtarget = &TM.getSubtarget<X86Subtarget>();
49 // We have to propagate some information about MachineFunction to
50 // AsmPrinter. It's ok, when we're printing the function, since we have
51 // access to MachineFunction and can get the appropriate MachineFunctionInfo.
52 // Unfortunately, this is not possible when we're printing reference to
53 // Function (e.g. calling it and so on). Even more, there is no way to get the
54 // corresponding MachineFunctions: it can even be not created at all. That's
55 // why we should use additional structure, when we're collecting all necessary
58 // This structure is using e.g. for name decoration for stdcall & fastcall'ed
59 // function, since we have to use arguments' size for decoration.
60 typedef std::map<const Function*, X86FunctionInfo> FMFInfoMap;
61 FMFInfoMap FunctionInfoMap;
63 void decorateName(std::string& Name, const GlobalValue* GV);
65 bool doInitialization(Module &M);
66 bool doFinalization(Module &M);
68 void getAnalysisUsage(AnalysisUsage &AU) const {
70 if (Subtarget->isTargetDarwin() ||
71 Subtarget->isTargetELF() ||
72 Subtarget->isTargetCygwin()) {
73 AU.addRequired<MachineDebugInfo>();
75 MachineFunctionPass::getAnalysisUsage(AU);
78 PICStyle::X86AsmPICStyle X86PICStyle;
80 const X86Subtarget *Subtarget;
82 // Necessary for Darwin to print out the apprioriate types of linker stubs
83 std::set<std::string> FnStubs, GVStubs, LinkOnceStubs;
85 // Necessary for dllexport support
86 std::set<std::string> DLLExportedFns, DLLExportedGVs;
88 // Necessary for external weak linkage support
89 std::set<std::string> ExtWeakSymbols;
91 inline static bool isScale(const MachineOperand &MO) {
92 return MO.isImmediate() &&
93 (MO.getImmedValue() == 1 || MO.getImmedValue() == 2 ||
94 MO.getImmedValue() == 4 || MO.getImmedValue() == 8);
97 inline static bool isMem(const MachineInstr *MI, unsigned Op) {
98 if (MI->getOperand(Op).isFrameIndex()) return true;
99 return Op+4 <= MI->getNumOperands() &&
100 MI->getOperand(Op ).isRegister() && isScale(MI->getOperand(Op+1)) &&
101 MI->getOperand(Op+2).isRegister() &&
102 (MI->getOperand(Op+3).isImmediate() ||
103 MI->getOperand(Op+3).isGlobalAddress() ||
104 MI->getOperand(Op+3).isConstantPoolIndex() ||
105 MI->getOperand(Op+3).isJumpTableIndex());
109 } // end namespace llvm