[llvm-commits] [llvm] r81914 - in /llvm/trunk/lib/Target/X86: X86Instr64bit.td X86InstrInfo.td

[Eli Friedman]

On Tue, Sep 15, 2009 at 1:53 PM, Sean Callanan <scallanan at apple.com> wrote:
==============================================================================
> --- llvm/trunk/lib/Target/X86/X86InstrInfo.td (original)
> +++ llvm/trunk/lib/Target/X86/X86InstrInfo.td Tue Sep 15 15:53:57 2009
> @@ -2427,6 +2427,14 @@
>                  "add{l}\t{$src2, $dst|$dst, $src2}",
>                  [(set GR32:$dst, (add GR32:$src1, (load addr:$src2))),
>                   (implicit EFLAGS)]>;
> +
> +// Register-Register Addition
> +def ADD8mrmrr: I<0x02, MRMSrcReg, (outs GR8:$dst), (ins GR8:$src1, GR8:$src2),
> +                 "add{b}\t{$src2, $dst|$dst, $src2}", []>;
> +def ADD16mrmrr: I<0x03, MRMSrcReg,(outs GR16:$dst),(ins GR16:$src1, GR16:$src2),
> +                  "add{w}\t{$src2, $dst|$dst, $src2}", []>, OpSize;
> +def ADD32mrmrr: I<0x03, MRMSrcReg,(outs GR16:$dst),(ins GR16:$src1, GR16:$src2),
> +                  "add{l}\t{$src2, $dst|$dst, $src2}", []>;
>
>  // Register-Integer Addition
>  def ADD8ri    : Ii8<0x80, MRM0r, (outs GR8:$dst), (ins GR8:$src1, i8imm:$src2),

It might be worth adding a comment explaining that these are
equivalent to ADD32rr and friends.

-Eli