Jason Ekstrand <ja...@jlekstrand.net> writes:
> ---
> src/compiler/nir/nir.h | 11 +++++++++++
> src/compiler/nir/nir_clone.c | 1 +
> src/compiler/nir/nir_print.c | 2 ++
> 3 files changed, 14 insertions(+)
>
> diff --git a/src/compiler/nir/nir.h b/src/compiler/nir/nir.h
> index 34f31eb..94b981b 100644
> --- a/src/compiler/nir/nir.h
> +++ b/src/compiler/nir/nir.h
> @@ -671,6 +671,17 @@ extern const nir_op_info nir_op_infos[nir_num_opcodes];
> typedef struct nir_alu_instr {
> nir_instr instr;
> nir_op op;
> +
> + /** Indicates that this ALU instruction generates an exact value
> + *
> + * This is kind-of a mixture of GLSL "precise" and "invariant" and not
> + * really equivalent to either. This indicates that the value generated
> by
> + * this operation is high-precision and any code transformations that
> touch
> + * it must ensure that the resulting value is bit-for-bit identical to the
> + * original.
> + */
> + bool exact;
> +
> nir_alu_dest dest;
> nir_alu_src src[];
> } nir_alu_instr;
> diff --git a/src/compiler/nir/nir_clone.c b/src/compiler/nir/nir_clone.c
> index 198ca8b..90eefa7 100644
> --- a/src/compiler/nir/nir_clone.c
> +++ b/src/compiler/nir/nir_clone.c
> @@ -303,6 +303,7 @@ static nir_alu_instr *
> clone_alu(clone_state *state, const nir_alu_instr *alu)
> {
> nir_alu_instr *nalu = nir_alu_instr_create(state->ns, alu->op);
> + nalu->exact = alu->exact;
>
> __clone_dst(state, &nalu->instr, &nalu->dest.dest, &alu->dest.dest);
> nalu->dest.saturate = alu->dest.saturate;
> diff --git a/src/compiler/nir/nir_print.c b/src/compiler/nir/nir_print.c
> index bdfbd26..26014c1 100644
> --- a/src/compiler/nir/nir_print.c
> +++ b/src/compiler/nir/nir_print.c
> @@ -207,6 +207,8 @@ print_alu_instr(nir_alu_instr *instr, print_state *state)
> print_alu_dest(&instr->dest, state);
>
> fprintf(fp, " = %s", nir_op_infos[instr->op].name);
> + if (instr->exact)
> + fprintf(fp, "!");
> if (instr->dest.saturate)
> fprintf(fp, ".sat");
> fprintf(fp, " ");Patches 1-3 are: Reviewed-by: Francisco Jerez <curroje...@riseup.net> > -- > 2.5.0.400.gff86faf > > _______________________________________________ > mesa-dev mailing list > mesa-dev@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/mesa-dev
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