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nir: update IO semantics in nir_io_add_const_offset_to_base 

Reviewed-by: Eric Anholt <eric@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6442>
This commit is contained in:
Marek Olšák 2020-08-14 19:33:50 -04:00 committed by Marge Bot
parent 17af07024d
commit 01ab308edc
1 changed files with 21 additions and 1 deletions
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22
src/compiler/nir/nir_lower_io.c
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@ -1794,6 +1794,17 @@ is_output(nir_intrinsic_instr *intrin)
intrin->intrinsic == nir_intrinsic_store_per_vertex_output;
}
static bool is_dual_slot(nir_intrinsic_instr *intrin)
{
if (intrin->intrinsic == nir_intrinsic_store_output ||
intrin->intrinsic == nir_intrinsic_store_per_vertex_output) {
return nir_src_bit_size(intrin->src[0]) == 64 &&
nir_src_num_components(intrin->src[0]) >= 3;
}
return nir_dest_bit_size(intrin->dest) &&
nir_dest_num_components(intrin->dest) >= 3;
}
/**
* This pass adds constant offsets to instr->const_index[0] for input/output
@ -1820,7 +1831,16 @@ add_const_offset_to_base_block(nir_block *block, nir_builder *b,
nir_src *offset = nir_get_io_offset_src(intrin);
if (nir_src_is_const(*offset)) {
intrin->const_index[0] += nir_src_as_uint(*offset);
unsigned off = nir_src_as_uint(*offset);
nir_intrinsic_set_base(intrin, nir_intrinsic_base(intrin) + off);
nir_io_semantics sem = nir_intrinsic_io_semantics(intrin);
sem.location += off;
/* non-indirect indexing should reduce num_slots */
sem.num_slots = is_dual_slot(intrin) ? 2 : 1;
nir_intrinsic_set_io_semantics(intrin, sem);
b->cursor = nir_before_instr(&intrin->instr);
nir_instr_rewrite_src(&intrin->instr, offset,
nir_src_for_ssa(nir_imm_int(b, 0)));