llvm-6502/lib/Target/X86/X86InstrInfo.cpp
Misha Brukman a85d6bc2bc Added -*- C++ -*- mode to the comments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4826 91177308-0d34-0410-b5e6-96231b3b80d8
2002-11-22 22:42:50 +00:00

41 lines
1.3 KiB
C++

//===- X86InstrInfo.cpp - X86 Instruction Information -----------*- C++ -*-===//
//
// This file contains the X86 implementation of the MachineInstrInfo class.
//
//===----------------------------------------------------------------------===//
#include "X86InstrInfo.h"
#include "llvm/CodeGen/MachineInstr.h"
#include <iostream>
// X86Insts - Turn the InstrInfo.def file into a bunch of instruction
// descriptors
//
static const MachineInstrDescriptor X86Insts[] = {
#define I(ENUM, NAME, BASEOPCODE, FLAGS, TSFLAGS) \
{ NAME, \
-1, /* Always vararg */ \
((TSFLAGS) & X86II::Void) ? -1 : 0, /* Result is in 0 */ \
0, false, 0, 0, TSFLAGS, FLAGS, TSFLAGS },
#include "X86InstrInfo.def"
};
X86InstrInfo::X86InstrInfo()
: MachineInstrInfo(X86Insts, sizeof(X86Insts)/sizeof(X86Insts[0]), 0) {
}
static unsigned char BaseOpcodes[] = {
#define I(ENUM, NAME, BASEOPCODE, FLAGS, TSFLAGS) BASEOPCODE,
#include "X86InstrInfo.def"
};
// getBaseOpcodeFor - This function returns the "base" X86 opcode for the
// specified opcode number.
//
unsigned char X86InstrInfo::getBaseOpcodeFor(unsigned Opcode) const {
assert(Opcode < sizeof(BaseOpcodes)/sizeof(BaseOpcodes[0]) &&
"Opcode out of range!");
return BaseOpcodes[Opcode];
}