diff options
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_fs.cpp | 17 |
1 files changed, 4 insertions, 13 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp b/src/mesa/drivers/dri/i965/brw_fs.cpp index b12a4800410..ac795e0bda1 100644 --- a/src/mesa/drivers/dri/i965/brw_fs.cpp +++ b/src/mesa/drivers/dri/i965/brw_fs.cpp @@ -2801,26 +2801,17 @@ bool fs_visitor::dead_code_eliminate() { bool progress = false; - int num_vars = this->virtual_grf_next; - bool dead[num_vars]; - - for (int i = 0; i < num_vars; i++) { - dead[i] = this->virtual_grf_def[i] >= this->virtual_grf_use[i]; - - if (dead[i]) { - /* Mark off its interval so it won't interfere with anything. */ - this->virtual_grf_def[i] = -1; - this->virtual_grf_use[i] = -1; - } - } + int pc = 0; foreach_iter(exec_list_iterator, iter, this->instructions) { fs_inst *inst = (fs_inst *)iter.get(); - if (inst->dst.file == GRF && dead[inst->dst.reg]) { + if (inst->dst.file == GRF && this->virtual_grf_use[inst->dst.reg] <= pc) { inst->remove(); progress = true; } + + pc++; } return progress; |