[Mesa-dev] [PATCH] R600/SI: Add pattern for xor of i1

[Tom Stellard]

On Fri, Aug 16, 2013 at 04:04:37PM +0200, Michel Dänzer wrote:
> From: Michel Dänzer <michel.daenzer at amd.com>
> 
> Fixes two recent piglit regressions with radeonsi.
> 
> Signed-off-by: Michel Dänzer <michel.daenzer at amd.com>
Reviewed-by: Tom Stellard <thomas.stellard at amd.com>
> ---
>  lib/Target/R600/SIInstructions.td |  4 +++-
>  test/CodeGen/R600/xor.ll          | 17 +++++++++++++++++
>  2 files changed, 20 insertions(+), 1 deletion(-)
> 
> diff --git a/lib/Target/R600/SIInstructions.td b/lib/Target/R600/SIInstructions.td
> index 4eb3566..436a2cd 100644
> --- a/lib/Target/R600/SIInstructions.td
> +++ b/lib/Target/R600/SIInstructions.td
> @@ -1144,7 +1144,9 @@ def : Pat <
>    (S_OR_B64 $src0, $src1)
>  >;
>  def S_XOR_B32 : SOP2_32 <0x00000012, "S_XOR_B32", []>;
> -def S_XOR_B64 : SOP2_64 <0x00000013, "S_XOR_B64", []>;
> +def S_XOR_B64 : SOP2_64 <0x00000013, "S_XOR_B64",
> +  [(set i1:$dst, (xor i1:$src0, i1:$src1))]
> +>;
>  def S_ANDN2_B32 : SOP2_32 <0x00000014, "S_ANDN2_B32", []>;
>  def S_ANDN2_B64 : SOP2_64 <0x00000015, "S_ANDN2_B64", []>;
>  def S_ORN2_B32 : SOP2_32 <0x00000016, "S_ORN2_B32", []>;
> diff --git a/test/CodeGen/R600/xor.ll b/test/CodeGen/R600/xor.ll
> index f52729d..84d4cd4 100644
> --- a/test/CodeGen/R600/xor.ll
> +++ b/test/CodeGen/R600/xor.ll
> @@ -37,3 +37,20 @@ define void @xor_v4i32(<4 x i32> addrspace(1)* %out, <4 x i32> addrspace(1)* %in
>    store <4 x i32> %result, <4 x i32> addrspace(1)* %out
>    ret void
>  }
> +
> +;EG-CHECK: @xor_i1
> +;EG-CHECK: XOR_INT {{\*? *}}T{{[0-9]+\.[XYZW], PV\.[XYZW], PV\.[XYZW]}}
> +
> +;SI-CHECK: @xor_i1
> +;SI-CHECK: S_XOR_B64 {{SGPR[0-9]+_SGPR[0-9]+, SGPR[0-9]+_SGPR[0-9]+, SGPR[0-9]+_SGPR[0-9]+}}
> +
> +define void @xor_i1(float addrspace(1)* %out, float addrspace(1)* %in0, float addrspace(1)* %in1) {
> +  %a = load float addrspace(1) * %in0
> +  %b = load float addrspace(1) * %in1
> +  %acmp = fcmp oge float %a, 0.000000e+00
> +  %bcmp = fcmp oge float %b, 0.000000e+00
> +  %xor = xor i1 %acmp, %bcmp
> +  %result = select i1 %xor, float %a, float %b
> +  store float %result, float addrspace(1)* %out
> +  ret void
> +}
> -- 
> 1.8.4.rc2
> 
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