From: Timothy Arceri <tarceri@localhost.localdomain> We need to update the cursor before we check if the alu use is dominated by the if condition. Previously we were checking if the current location of the alu instruction was dominated by the if condition which would miss some optimisation opportunities.
Fixes: a3b4cb34589e ("nir/opt_if: Rework condition propagation") --- src/compiler/nir/nir_opt_if.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/src/compiler/nir/nir_opt_if.c b/src/compiler/nir/nir_opt_if.c index 1f2e1f21130..1fe95e53766 100644 --- a/src/compiler/nir/nir_opt_if.c +++ b/src/compiler/nir/nir_opt_if.c @@ -444,11 +444,10 @@ propagate_condition_eval(nir_builder *b, nir_if *nif, nir_src *use_src, bool is_if_condition) { bool bool_value; + b->cursor = nir_before_src(alu_use, is_if_condition); if (!evaluate_if_condition(nif, b->cursor, &bool_value)) return false; - b->cursor = nir_before_src(alu_use, is_if_condition); - nir_ssa_def *def[2] = {0}; for (unsigned i = 0; i < nir_op_infos[alu->op].num_inputs; i++) { if (alu->src[i].src.ssa == use_src->ssa) { -- 2.17.2 _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/mesa-dev