[Mesa-dev] [PATCH 01/11] nir: Add helper functions to get the instruction that generated a nir_src

[Thomas Helland]

Den tir. 11. sep. 2018 kl. 01:30 skrev Ian Romanick <idr at freedesktop.org>:
>
> From: Ian Romanick <ian.d.romanick at intel.com>
>

Reviewed-by: Thomas Helland<thomashelland90 at gmail.com>

> Signed-off-by: Ian Romanick <ian.d.romanick at intel.com>
> ---
>  src/compiler/nir/nir.h | 23 +++++++++++++++++++++++
>  1 file changed, 23 insertions(+)
>
> diff --git a/src/compiler/nir/nir.h b/src/compiler/nir/nir.h
> index bf4bd916d27..69ca1215644 100644
> --- a/src/compiler/nir/nir.h
> +++ b/src/compiler/nir/nir.h
> @@ -2490,6 +2490,29 @@ bool nir_foreach_dest(nir_instr *instr, nir_foreach_dest_cb cb, void *state);
>  bool nir_foreach_src(nir_instr *instr, nir_foreach_src_cb cb, void *state);
>
>  nir_const_value *nir_src_as_const_value(nir_src src);
> +
> +static inline struct nir_instr *
> +nir_src_instr(const struct nir_src *src)
> +{
> +   return src->is_ssa ? src->ssa->parent_instr : NULL;
> +}
> +
> +#define NIR_SRC_AS_(name, c_type, type_enum, cast_macro)                \
> +static inline c_type *                                                  \
> +nir_src_as_ ## name (struct nir_src *src)                               \
> +{                                                                       \
> +    return src->is_ssa && src->ssa->parent_instr->type == type_enum     \
> +           ? cast_macro(src->ssa->parent_instr) : NULL;                 \
> +}                                                                       \
> +static inline const c_type *                                            \
> +nir_src_as_ ## name ## _const(const struct nir_src *src)                \
> +{                                                                       \
> +    return src->is_ssa && src->ssa->parent_instr->type == type_enum     \
> +           ? cast_macro(src->ssa->parent_instr) : NULL;                 \
> +}
> +
> +NIR_SRC_AS_(alu_instr, nir_alu_instr, nir_instr_type_alu, nir_instr_as_alu)
> +
>  bool nir_src_is_dynamically_uniform(nir_src src);
>  bool nir_srcs_equal(nir_src src1, nir_src src2);
>  void nir_instr_rewrite_src(nir_instr *instr, nir_src *src, nir_src new_src);
> --
> 2.14.4
>
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