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Misha Brukmana85d6bc2002-11-22 22:42:50 +00001//===- X86InstrInfo.cpp - X86 Instruction Information -----------*- C++ -*-===//
Chris Lattner72614082002-10-25 22:55:53 +00002//
Chris Lattner33f53b52002-10-29 20:48:56 +00003// This file contains the X86 implementation of the MachineInstrInfo class.
Chris Lattner72614082002-10-25 22:55:53 +00004//
5//===----------------------------------------------------------------------===//
6
Chris Lattner055c9652002-10-29 21:05:24 +00007#include "X86InstrInfo.h"
Chris Lattner4ce42a72002-12-03 05:42:53 +00008#include "X86.h"
Chris Lattner9bbf4392002-10-29 17:43:19 +00009#include "llvm/CodeGen/MachineInstr.h"
Chris Lattner4ce42a72002-12-03 05:42:53 +000010
11#define I(ENUM, NAME, BASEOPCODE, FLAGS, TSFLAGS, IMPDEFS, IMPUSES)
12#define IMPREGSLIST(NAME, ...) \
13 static const unsigned NAME[] = { __VA_ARGS__ };
14#include "X86InstrInfo.def"
15
Chris Lattner72614082002-10-25 22:55:53 +000016
Chris Lattner055c9652002-10-29 21:05:24 +000017// X86Insts - Turn the InstrInfo.def file into a bunch of instruction
Chris Lattner72614082002-10-25 22:55:53 +000018// descriptors
19//
Chris Lattner9bbf4392002-10-29 17:43:19 +000020static const MachineInstrDescriptor X86Insts[] = {
Chris Lattnerb3392232002-12-18 01:05:54 +000021#define I(ENUM, NAME, BASEOPCODE, FLAGS, TSFLAGS, IMPUSES, IMPDEFS) \
Chris Lattnerb752e9a2002-10-30 01:15:31 +000022 { NAME, \
23 -1, /* Always vararg */ \
24 ((TSFLAGS) & X86II::Void) ? -1 : 0, /* Result is in 0 */ \
Chris Lattnerb3392232002-12-18 01:05:54 +000025 0, /* maxImmedConst field */\
26 false, /* immedIsSignExtended */\
27 0, /* numDelaySlots */\
28 0, /* latency */\
29 0, /* schedClass */\
30 FLAGS, /* Flags */\
31 TSFLAGS, /* TSFlags */\
32 IMPUSES, /* ImplicitUses */\
33 IMPDEFS }, /* ImplicitDefs */
Chris Lattner055c9652002-10-29 21:05:24 +000034#include "X86InstrInfo.def"
Chris Lattner72614082002-10-25 22:55:53 +000035};
36
Chris Lattner055c9652002-10-29 21:05:24 +000037X86InstrInfo::X86InstrInfo()
Chris Lattner9bbf4392002-10-29 17:43:19 +000038 : MachineInstrInfo(X86Insts, sizeof(X86Insts)/sizeof(X86Insts[0]), 0) {
Chris Lattner72614082002-10-25 22:55:53 +000039}
40
41
Chris Lattnerf21dfcd2002-11-18 06:56:24 +000042static unsigned char BaseOpcodes[] = {
Chris Lattner4ce42a72002-12-03 05:42:53 +000043#define I(ENUM, NAME, BASEOPCODE, FLAGS, TSFLAGS, IMPDEFS, IMPUSES) BASEOPCODE,
Chris Lattnerf21dfcd2002-11-18 06:56:24 +000044#include "X86InstrInfo.def"
45};
46
47// getBaseOpcodeFor - This function returns the "base" X86 opcode for the
48// specified opcode number.
49//
50unsigned char X86InstrInfo::getBaseOpcodeFor(unsigned Opcode) const {
51 assert(Opcode < sizeof(BaseOpcodes)/sizeof(BaseOpcodes[0]) &&
52 "Opcode out of range!");
53 return BaseOpcodes[Opcode];
54}