[Mesa-dev] [Nouveau] [PATCH] nv50/ir: mark STORE destination inputs as used

[Karol Herbst]

Reviewed-by: Karol Herbst <kherbst at redhat.com>

On Mon, Oct 14, 2019 at 8:47 AM Ilia Mirkin <imirkin at alum.mit.edu> wrote:
>
> Observed an issue when looking at the code generatedy by the
> image-vertex-attrib-input-output piglit test. Even though the test
> itself worked fine (due to TIC 0 being used for the image), this needs
> to be fixed.
>
> Signed-off-by: Ilia Mirkin <imirkin at alum.mit.edu>
> ---
>  src/gallium/drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp | 6 ++++++
>  1 file changed, 6 insertions(+)
>
> diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp b/src/gallium/drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp
> index d62d36008e6..8c429026452 100644
> --- a/src/gallium/drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp
> +++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp
> @@ -1591,6 +1591,12 @@ bool Source::scanInstruction(const struct tgsi_full_instruction *inst)
>        if (insn.getOpcode() == TGSI_OPCODE_STORE &&
>            dst.getFile() != TGSI_FILE_MEMORY) {
>           info->io.globalAccess |= 0x2;
> +
> +         if (dst.getFile() == TGSI_FILE_INPUT) {
> +            // TODO: Handle indirect somehow?
> +            const int i = dst.getIndex(0);
> +            info->in[i].mask |= 1;
> +         }
>        }
>
>        if (dst.getFile() == TGSI_FILE_OUTPUT) {
> --
> 2.21.0
>
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