[Mesa-dev] [PATCH 2/2] gk110/ir: add emission for (a OP b) OP c

[Ilia Mirkin]

Presumably this should also be CC'd to stable? I don't know when we'd
emit something like that, but presumably it can happen.

Does the GM107 emitter handle this case?

In any case, this series is

Reviewed-by: Ilia Mirkin <imirkin at alum.mit.edu>

On Tue, Apr 26, 2016 at 1:11 PM, Samuel Pitoiset
<samuel.pitoiset at gmail.com> wrote:
> This is pretty similar to NVC0 except that offsets have changed.
>
> Signed-off-by: Samuel Pitoiset <samuel.pitoiset at gmail.com>
> ---
>  .../drivers/nouveau/codegen/nv50_ir_emit_gk110.cpp | 26 ++++++++++++++++++++++
>  1 file changed, 26 insertions(+)
>
> diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir_emit_gk110.cpp b/src/gallium/drivers/nouveau/codegen/nv50_ir_emit_gk110.cpp
> index 9027803..98e5a95 100644
> --- a/src/gallium/drivers/nouveau/codegen/nv50_ir_emit_gk110.cpp
> +++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_emit_gk110.cpp
> @@ -784,6 +784,32 @@ CodeEmitterGK110::emitNOT(const Instruction *i)
>  void
>  CodeEmitterGK110::emitLogicOp(const Instruction *i, uint8_t subOp)
>  {
> +   if (i->def(0).getFile() == FILE_PREDICATE) {
> +      code[0] = 0x00000002 | (subOp << 27);
> +      code[1] = 0x84800000;
> +
> +      emitPredicate(i);
> +
> +      defId(i->def(0), 5);
> +      srcId(i->src(0), 14);
> +      if (i->src(0).mod == Modifier(NV50_IR_MOD_NOT)) code[0] |= 1 << 17;
> +      srcId(i->src(1), 32);
> +      if (i->src(1).mod == Modifier(NV50_IR_MOD_NOT)) code[1] |= 1 << 3;
> +
> +      if (i->defExists(1)) {
> +         defId(i->def(1), 2);
> +      } else {
> +         code[0] |= 7 << 2;
> +      }
> +      // (a OP b) OP c
> +      if (i->predSrc != 2 && i->srcExists(2)) {
> +         code[1] |= subOp << 16;
> +         srcId(i->src(2), 42);
> +         if (i->src(2).mod == Modifier(NV50_IR_MOD_NOT)) code[1] |= 1 << 13;
> +      } else {
> +         code[1] |= 7 << 10;
> +      }
> +   } else
>     if (isLIMM(i->src(1), TYPE_S32)) {
>        emitForm_L(i, 0x200, 0, i->src(1).mod);
>        code[1] |= subOp << 24;
> --
> 2.8.0
>
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