1 //===-- X86.h - Top-level interface for X86 representation ------*- C++ -*-===//
3 // This file contains the entry points for global functions defined in the x86
4 // target library, as used by the LLVM JIT.
6 // FIXME: This file will be dramatically changed in the future
8 //===----------------------------------------------------------------------===//
14 class MachineFunction;
17 /// X86PrintCode - Print out the specified machine code function to the
18 /// specified stream. This function should work regardless of whether or not
19 /// the function is in SSA form or not.
21 void X86PrintCode(const MachineFunction *MF, std::ostream &O);
23 /// X86SimpleInstructionSelection - This function converts an LLVM function into
24 /// a machine code representation is a very simple peep-hole fashion. The
25 /// generated code sucks but the implementation is nice and simple.
27 MachineFunction *X86SimpleInstructionSelection(Function &F);
29 /// X86SimpleRegisterAllocation - This function converts the specified machine
30 /// code function from SSA form to use explicit registers by spilling every
31 /// register. Wow, great policy huh?
33 inline void X86SimpleRegisterAllocation(MachineFunction *MF) {}
35 /// X86EmitCodeToMemory - This function converts a register allocated function
36 /// into raw machine code in a dynamically allocated chunk of memory. A pointer
37 /// to the start of the function is returned.
39 inline void *X86EmitCodeToMemory(MachineFunction *MF) { return 0; }
42 // Put symbolic names in a namespace to avoid causing these to clash with all
43 // kinds of other things...
46 // Defines a large number of symbolic names for X86 registers. This defines a
47 // mapping from register name to register number.
50 #define R(ENUM, NAME, FLAGS, TSFLAGS) ENUM,
51 #include "X86RegisterInfo.def"
54 // This defines a large number of symbolic names for X86 instruction opcodes.
56 #define I(ENUM, NAME, FLAGS, TSFLAGS) ENUM,
57 #include "X86InstructionInfo.def"