2010-10-02 23:06:23 +00:00
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//====- X86Instr3DNow.td - The 3DNow! Instruction Set ------*- tablegen -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file describes the 3DNow! instruction set, which extends MMX to support
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// floating point and also adds a few more random instructions for good measure.
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//
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//===----------------------------------------------------------------------===//
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2010-10-03 18:08:05 +00:00
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// FIXME: We don't support any intrinsics for these instructions yet.
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class I3DNow<bits<8> o, Format F, dag outs, dag ins, string asm,
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list<dag> pattern>
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: I<o, F, outs, ins, asm, pattern>, TB, Requires<[Has3DNow]>,
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Has3DNow0F0FOpcode {
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// FIXME: The disassembler doesn't support 3DNow! yet.
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let isAsmParserOnly = 1;
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}
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let Constraints = "$src1 = $dst" in {
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// MMXI_binop_rm_int - Simple MMX binary operator based on intrinsic.
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// When this is cleaned up, remove the FIXME from X86RecognizableInstr.cpp.
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multiclass I3DNow_binop_rm<bits<8> opc, string Mnemonic> {
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def rr : I3DNow<opc, MRMSrcReg, (outs VR64:$dst),
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(ins VR64:$src1, VR64:$src2),
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!strconcat(Mnemonic, "\t{$src2, $dst|$dst, $src2}"), []>;
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def rm : I3DNow<opc, MRMSrcMem, (outs VR64:$dst),
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(ins VR64:$src1, i64mem:$src2),
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!strconcat(Mnemonic, "\t{$src2, $dst|$dst, $src2}"), []>;
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}
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}
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defm PAVGUSB : I3DNow_binop_rm<0xBF, "pavgusb">;
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// TODO: Add support for the rest of the 3DNow! and "3DNowA" instructions.
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