From 03c9ad900e4f1feb2a4df8dd0c563937d999ae5d Mon Sep 17 00:00:00 2001 From: Jason Ekstrand Date: Thu, 12 Nov 2015 10:38:12 -0800 Subject: [PATCH] nir/validate: Validated dests after sources Previously, if someone accidentally made an instruction that refers to its own SSA destination, the validator wouldn't catch it. The reason for this is that it validated the destination too early and, by the time it got to the source, the destination SSA value was already added to the set of seen SSA values so it would assume that it came from some previous instruction. By moving destination validation to be after source validation, the SSA value is not in the list of seen values and the validator will catch self-referential instructions. Reviewed-by: Connor Abbott --- src/glsl/nir/nir_validate.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) diff --git a/src/glsl/nir/nir_validate.c b/src/glsl/nir/nir_validate.c index ed374b921fa..06879d64ee2 100644 --- a/src/glsl/nir/nir_validate.c +++ b/src/glsl/nir/nir_validate.c @@ -290,11 +290,11 @@ validate_alu_instr(nir_alu_instr *instr, validate_state *state) { assert(instr->op < nir_num_opcodes); - validate_alu_dest(&instr->dest, state); - for (unsigned i = 0; i < nir_op_infos[instr->op].num_inputs; i++) { validate_alu_src(instr, i, state); } + + validate_alu_dest(&instr->dest, state); } static void @@ -375,6 +375,11 @@ validate_intrinsic_instr(nir_intrinsic_instr *instr, validate_state *state) validate_src(&instr->src[i], state); } + unsigned num_vars = nir_intrinsic_infos[instr->intrinsic].num_variables; + for (unsigned i = 0; i < num_vars; i++) { + validate_deref_var(instr, instr->variables[i], state); + } + if (nir_intrinsic_infos[instr->intrinsic].has_dest) { unsigned components_written = nir_intrinsic_infos[instr->intrinsic].dest_components; @@ -392,11 +397,6 @@ validate_intrinsic_instr(nir_intrinsic_instr *instr, validate_state *state) validate_dest(&instr->dest, state); } - unsigned num_vars = nir_intrinsic_infos[instr->intrinsic].num_variables; - for (unsigned i = 0; i < num_vars; i++) { - validate_deref_var(instr, instr->variables[i], state); - } - switch (instr->intrinsic) { case nir_intrinsic_load_var: { const struct glsl_type *type = @@ -434,8 +434,6 @@ validate_intrinsic_instr(nir_intrinsic_instr *instr, validate_state *state) static void validate_tex_instr(nir_tex_instr *instr, validate_state *state) { - validate_dest(&instr->dest, state); - bool src_type_seen[nir_num_tex_src_types]; for (unsigned i = 0; i < nir_num_tex_src_types; i++) src_type_seen[i] = false; @@ -448,6 +446,8 @@ validate_tex_instr(nir_tex_instr *instr, validate_state *state) if (instr->sampler != NULL) validate_deref_var(instr, instr->sampler, state); + + validate_dest(&instr->dest, state); } static void -- 2.11.0