diff options
Diffstat (limited to 'src/mesa')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_vec4.cpp | 30 |
1 files changed, 9 insertions, 21 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_vec4.cpp b/src/mesa/drivers/dri/i965/brw_vec4.cpp index ed1200db18e..022ed37a8ef 100644 --- a/src/mesa/drivers/dri/i965/brw_vec4.cpp +++ b/src/mesa/drivers/dri/i965/brw_vec4.cpp @@ -516,12 +516,9 @@ vec4_visitor::dead_code_eliminate() } } - for (exec_node *node = inst->prev, *prev = node->prev; - prev != NULL && dead_channels != 0; - node = prev, prev = prev->prev) { - vec4_instruction *scan_inst = (vec4_instruction *)node; - - if (scan_inst->is_control_flow()) + foreach_inst_in_block_reverse_starting_from(vec4_instruction, scan_inst, + inst, block) { + if (dead_channels == 0) break; if (inst_writes_flag) { @@ -1062,10 +1059,11 @@ vec4_visitor::opt_register_coalesce() * everything writing to the temporary to write into the destination * instead. */ - vec4_instruction *scan_inst; - for (scan_inst = (vec4_instruction *)inst->prev; - scan_inst->prev != NULL; - scan_inst = (vec4_instruction *)scan_inst->prev) { + vec4_instruction *_scan_inst = (vec4_instruction *)inst->prev; + foreach_inst_in_block_reverse_starting_from(vec4_instruction, scan_inst, + inst, block) { + _scan_inst = scan_inst; + if (scan_inst->dst.file == GRF && scan_inst->dst.reg == inst->src[0].reg && scan_inst->dst.reg_offset == inst->src[0].reg_offset) { @@ -1107,16 +1105,6 @@ vec4_visitor::opt_register_coalesce() break; } - /* We don't handle flow control here. Most computation of values - * that could be coalesced happens just before their use. - */ - if (scan_inst->opcode == BRW_OPCODE_DO || - scan_inst->opcode == BRW_OPCODE_WHILE || - scan_inst->opcode == BRW_OPCODE_ELSE || - scan_inst->opcode == BRW_OPCODE_ENDIF) { - break; - } - /* You can't read from an MRF, so if someone else reads our MRF's * source GRF that we wanted to rewrite, that stops us. If it's a * GRF we're trying to coalesce to, we don't actually handle @@ -1169,7 +1157,7 @@ vec4_visitor::opt_register_coalesce() * computing the value. Now go rewrite the instruction stream * between the two. */ - + vec4_instruction *scan_inst = _scan_inst; while (scan_inst != inst) { if (scan_inst->dst.file == GRF && scan_inst->dst.reg == inst->src[0].reg && |