Emit the SELs and MOVs with the same execution controls as the original MOVs, and the CMP with the same execution controls as the IF. Also explicitly check that the execution controls of any pair of MOVs being folded into a SEL are compatible (which is almost always going to be the case), since otherwise it would seem wrong to initialize the builder object below from the then_mov instruction only. --- src/mesa/drivers/dri/i965/brw_fs_sel_peephole.cpp | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-)
diff --git a/src/mesa/drivers/dri/i965/brw_fs_sel_peephole.cpp b/src/mesa/drivers/dri/i965/brw_fs_sel_peephole.cpp index 8660ec0..d190d8e 100644 --- a/src/mesa/drivers/dri/i965/brw_fs_sel_peephole.cpp +++ b/src/mesa/drivers/dri/i965/brw_fs_sel_peephole.cpp @@ -174,6 +174,9 @@ fs_visitor::opt_peephole_sel() /* Check that the MOVs are the right form. */ if (!then_mov[i]->dst.equals(else_mov[i]->dst) || + then_mov[i]->exec_size != else_mov[i]->exec_size || + then_mov[i]->force_sechalf != else_mov[i]->force_sechalf || + then_mov[i]->force_writemask_all != else_mov[i]->force_writemask_all || then_mov[i]->is_partial_write() || else_mov[i]->is_partial_write() || then_mov[i]->conditional_mod != BRW_CONDITIONAL_NONE || @@ -192,14 +195,17 @@ fs_visitor::opt_peephole_sel() if (movs == 0) continue; - const fs_builder ibld = bld.at(block, if_inst); - /* Emit a CMP if our IF used the embedded comparison */ - if (devinfo->gen == 6 && if_inst->conditional_mod) + if (devinfo->gen == 6 && if_inst->conditional_mod) { + const fs_builder ibld(this, block, if_inst); ibld.CMP(ibld.null_reg_d(), if_inst->src[0], if_inst->src[1], if_inst->conditional_mod); + } for (int i = 0; i < movs; i++) { + const fs_builder ibld = fs_builder(this, then_block, then_mov[i]) + .at(block, if_inst); + if (then_mov[i]->src[0].equals(else_mov[i]->src[0])) { ibld.MOV(then_mov[i]->dst, then_mov[i]->src[0]); } else { -- 2.4.6 _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev