[llvm] r174920 - Added 0x0D to 2-byte opcode extension table for prefetch* variants

[Eric Christopher]

Testcases?

-eric


On Mon, Feb 11, 2013 at 4:19 PM, Kay Tiong Khoo <kkhoo at perfwizard.com>wrote:

> Author: kkhoo
> Date: Mon Feb 11 18:19:12 2013
> New Revision: 174920
>
> URL: http://llvm.org/viewvc/llvm-project?rev=174920&view=rev
> Log:
> Added 0x0D to 2-byte opcode extension table for prefetch* variants
> Fixed decode of existing 3dNow prefetchw instruction
> Intel is scheduled to add a compatible prefetchw (same encoding) to future
> CPUs
>
> Modified:
>     llvm/trunk/lib/Target/X86/X86Instr3DNow.td
>     llvm/trunk/utils/TableGen/X86RecognizableInstr.cpp
>
> Modified: llvm/trunk/lib/Target/X86/X86Instr3DNow.td
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86Instr3DNow.td?rev=174920&r1=174919&r2=174920&view=diff
>
> ==============================================================================
> --- llvm/trunk/lib/Target/X86/X86Instr3DNow.td (original)
> +++ llvm/trunk/lib/Target/X86/X86Instr3DNow.td Mon Feb 11 18:19:12 2013
> @@ -87,12 +87,10 @@ defm PMULHRW  : I3DNow_binop_rm_int<0xB7
>  def FEMMS : I3DNow<0x0E, RawFrm, (outs), (ins), "femms",
> [(int_x86_mmx_femms)]>;
>
>  def PREFETCH  : I3DNow<0x0D, MRM0m, (outs), (ins i32mem:$addr),
> -                       "prefetch $addr", []>;
> +                       "prefetch\t$addr", []>;
>
> -// FIXME: Diassembler gets a bogus decode conflict.
> -let isAsmParserOnly = 1 in
>  def PREFETCHW : I3DNow<0x0D, MRM1m, (outs), (ins i16mem:$addr),
> -                       "prefetchw $addr", []>;
> +                       "prefetchw\t$addr", []>;
>
>  // "3DNowA" instructions
>  defm PF2IW    : I3DNow_conv_rm_int<0x1C, "pf2iw", "a">;
>
> Modified: llvm/trunk/utils/TableGen/X86RecognizableInstr.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/utils/TableGen/X86RecognizableInstr.cpp?rev=174920&r1=174919&r2=174920&view=diff
>
> ==============================================================================
> --- llvm/trunk/utils/TableGen/X86RecognizableInstr.cpp (original)
> +++ llvm/trunk/utils/TableGen/X86RecognizableInstr.cpp Mon Feb 11 18:19:12
> 2013
> @@ -119,6 +119,7 @@ namespace X86Local {
>  #define TWO_BYTE_EXTENSION_TABLES \
>    EXTENSION_TABLE(00)             \
>    EXTENSION_TABLE(01)             \
> +  EXTENSION_TABLE(0d)             \
>    EXTENSION_TABLE(18)             \
>    EXTENSION_TABLE(71)             \
>    EXTENSION_TABLE(72)             \
>
>
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