[Mesa-dev] [PATCH] radeon/llvm: replaces fragment input with negative index with undef values

[Tom Stellard]

On Tue, Nov 13, 2012 at 10:13:04PM +0100, Vincent Lejeune wrote:
> ---

Reviewed-by: Tom Stellard <thomas.stellard at amd.com>

>  lib/Target/AMDGPU/R600ISelLowering.cpp | 12 +++++++++---
>  1 file changed, 9 insertions(+), 3 deletions(-)
> 
> diff --git a/lib/Target/AMDGPU/R600ISelLowering.cpp b/lib/Target/AMDGPU/R600ISelLowering.cpp
> index c837705..c6d9c4a 100644
> --- a/lib/Target/AMDGPU/R600ISelLowering.cpp
> +++ b/lib/Target/AMDGPU/R600ISelLowering.cpp
> @@ -450,7 +450,9 @@ SDValue R600TargetLowering::LowerOperation(SDValue Op, SelectionDAG &DAG) const
>        return CreateLiveInRegister(DAG, &AMDGPU::R600_TReg32RegClass, Reg, VT);
>      }
>      case AMDGPUIntrinsic::R600_load_input_perspective: {
> -      unsigned slot = cast<ConstantSDNode>(Op.getOperand(1))->getZExtValue();
> +      int slot = cast<ConstantSDNode>(Op.getOperand(1))->getZExtValue();
> +      if (slot < 0)
> +        return DAG.getUNDEF(MVT::f32);
>        SDValue FullVector = DAG.getNode(
>            AMDGPUISD::INTERP,
>            DL, MVT::v4f32,
> @@ -459,7 +461,9 @@ SDValue R600TargetLowering::LowerOperation(SDValue Op, SelectionDAG &DAG) const
>          DL, VT, FullVector, DAG.getConstant(slot % 4, MVT::i32));
>      }
>      case AMDGPUIntrinsic::R600_load_input_linear: {
> -      unsigned slot = cast<ConstantSDNode>(Op.getOperand(1))->getZExtValue();
> +      int slot = cast<ConstantSDNode>(Op.getOperand(1))->getZExtValue();
> +      if (slot < 0)
> +        return DAG.getUNDEF(MVT::f32);
>        SDValue FullVector = DAG.getNode(
>          AMDGPUISD::INTERP,
>          DL, MVT::v4f32,
> @@ -468,7 +472,9 @@ SDValue R600TargetLowering::LowerOperation(SDValue Op, SelectionDAG &DAG) const
>          DL, VT, FullVector, DAG.getConstant(slot % 4, MVT::i32));
>      }
>      case AMDGPUIntrinsic::R600_load_input_constant: {
> -      unsigned slot = cast<ConstantSDNode>(Op.getOperand(1))->getZExtValue();
> +      int slot = cast<ConstantSDNode>(Op.getOperand(1))->getZExtValue();
> +      if (slot < 0)
> +        return DAG.getUNDEF(MVT::f32);
>        SDValue FullVector = DAG.getNode(
>          AMDGPUISD::INTERP_P0,
>          DL, MVT::v4f32,
> -- 
> 1.7.11.7
> 
> _______________________________________________
> mesa-dev mailing list
> mesa-dev at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/mesa-dev