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freedreno: Convert load_barycentric_at_offset to the NIR lowering helper. 

Cuts out a ton of boilerplate.

Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
This commit is contained in:
Eric Anholt 2019-07-16 11:09:39 -07:00
parent cdc359c58e
commit 61098baf42
1 changed files with 19 additions and 39 deletions
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58
src/freedreno/ir3/ir3_nir_lower_load_barycentric_at_offset.c
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@ -40,9 +40,12 @@ load(nir_builder *b, unsigned ncomp, nir_intrinsic_op op)
return &load_size->dest.ssa;
}
static void
lower_load_barycentric_at_offset(nir_builder *b, nir_intrinsic_instr *intr)
static nir_ssa_def *
ir3_nir_lower_load_barycentric_at_offset_instr(nir_builder *b,
nir_instr *instr, void *data)
{
nir_intrinsic_instr *intr = nir_instr_as_intrinsic(instr);
#define chan(var, c) nir_channel(b, var, c)
nir_ssa_def *off = intr->src[0].ssa;
@ -77,48 +80,25 @@ lower_load_barycentric_at_offset(nir_builder *b, nir_intrinsic_instr *intr)
ij = nir_vec2(b, i, j);
nir_ssa_def_rewrite_uses(&intr->dest.ssa, nir_src_for_ssa(ij));
return ij;
}
static bool
ir3_nir_lower_load_barycentric_at_offset_filter(const nir_instr *instr,
const void *data)
{
return (instr->type == nir_instr_type_intrinsic &&
nir_instr_as_intrinsic(instr)->intrinsic ==
nir_intrinsic_load_barycentric_at_offset);
}
bool
ir3_nir_lower_load_barycentric_at_offset(nir_shader *shader)
{
bool progress = false;
debug_assert(shader->info.stage == MESA_SHADER_FRAGMENT);
nir_foreach_function (function, shader) {
if (!function->impl)
continue;
nir_builder b;
nir_builder_init(&b, function->impl);
nir_foreach_block (block, function->impl) {
nir_foreach_instr_safe(instr, block) {
if (instr->type != nir_instr_type_intrinsic)
continue;
nir_intrinsic_instr *intr = nir_instr_as_intrinsic(instr);
if (intr->intrinsic != nir_intrinsic_load_barycentric_at_offset)
continue;
debug_assert(intr->src[0].is_ssa);
debug_assert(intr->dest.is_ssa);
b.cursor = nir_before_instr(instr);
lower_load_barycentric_at_offset(&b, intr);
progress = true;
}
}
if (progress) {
nir_metadata_preserve(function->impl,
nir_metadata_block_index | nir_metadata_dominance);
}
}
return progress;
return nir_shader_lower_instructions(shader,
ir3_nir_lower_load_barycentric_at_offset_filter,
ir3_nir_lower_load_barycentric_at_offset_instr,
NULL);
}