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nir/search: Propagate exactness into newly created expressions

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Reviewed-by: Francisco Jerez <currojerez@riseup.net>
This commit is contained in:
Jason Ekstrand
2016-03-17 15:20:34 -07:00
parent ded3133d47
commit a6f25fa7d7
1 changed files with 5 additions and 4 deletions
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9
src/compiler/nir/nir_search.c
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@@ -406,7 +406,7 @@ bitsize_tree_filter_down(bitsize_tree *tree, unsigned size)
static nir_alu_src static nir_alu_src
construct_value(const nir_search_value *value, construct_value(const nir_search_value *value,
unsigned num_components, bitsize_tree *bitsize, unsigned num_components, bitsize_tree *bitsize, bool exact,
struct match_state *state, struct match_state *state,
nir_instr *instr, void *mem_ctx) nir_instr *instr, void *mem_ctx)
{ {
@@ -420,6 +420,7 @@ construct_value(const nir_search_value *value,
nir_alu_instr *alu = nir_alu_instr_create(mem_ctx, expr->opcode); nir_alu_instr *alu = nir_alu_instr_create(mem_ctx, expr->opcode);
nir_ssa_dest_init(&alu->instr, &alu->dest.dest, num_components, nir_ssa_dest_init(&alu->instr, &alu->dest.dest, num_components,
bitsize->dest_size, NULL); bitsize->dest_size, NULL);
alu->exact = exact;
alu->dest.write_mask = (1 << num_components) - 1; alu->dest.write_mask = (1 << num_components) - 1;
alu->dest.saturate = false; alu->dest.saturate = false;
@@ -431,7 +432,7 @@ construct_value(const nir_search_value *value,
num_components = nir_op_infos[alu->op].input_sizes[i]; num_components = nir_op_infos[alu->op].input_sizes[i];
alu->src[i] = construct_value(expr->srcs[i], alu->src[i] = construct_value(expr->srcs[i],
num_components, bitsize->srcs[i], num_components, bitsize->srcs[i], exact,
state, instr, mem_ctx); state, instr, mem_ctx);
} }
@@ -563,8 +564,8 @@ nir_replace_instr(nir_alu_instr *instr, const nir_search_expression *search,
instr->dest.dest.ssa.bit_size, NULL); instr->dest.dest.ssa.bit_size, NULL);
mov->src[0] = construct_value(replace, mov->src[0] = construct_value(replace,
instr->dest.dest.ssa.num_components, instr->dest.dest.ssa.num_components, tree,
tree, &state, &instr->instr, mem_ctx); instr->exact, &state, &instr->instr, mem_ctx);
nir_instr_insert_before(&instr->instr, &mov->instr); nir_instr_insert_before(&instr->instr, &mov->instr);
nir_ssa_def_rewrite_uses(&instr->dest.dest.ssa, nir_ssa_def_rewrite_uses(&instr->dest.dest.ssa,