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