Dead code elimination now handles this.
---
Depends on the previously sent 5 patch series.
src/mesa/drivers/dri/i965/brw_fs.cpp | 31 -------------------------------
src/mesa/drivers/dri/i965/brw_fs.h | 1 -
2 files changed, 32 deletions(-)
diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp
b/src/mesa/drivers/dri/i965/brw_fs.cpp
index 39c6231..baf9166 100644
--- a/src/mesa/drivers/dri/i965/brw_fs.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs.cpp
@@ -3414,35 +3414,6 @@ fs_visitor::calculate_register_pressure()
}
}
-/**
- * Look for repeated FS_OPCODE_MOV_DISPATCH_TO_FLAGS and drop the later ones.
- *
- * The needs_unlit_centroid_workaround ends up producing one of these per
- * channel of centroid input, so it's good to clean them up.
- *
- * An assumption here is that nothing ever modifies the dispatched pixels
- * value that FS_OPCODE_MOV_DISPATCH_TO_FLAGS reads from, but the hardware
- * dictates that anyway.
- */
-void
-fs_visitor::opt_drop_redundant_mov_to_flags()
-{
- bool flag_mov_found[2] = {false};
-
- foreach_block_and_inst_safe(block, fs_inst, inst, cfg) {
- if (inst->is_control_flow()) {
- memset(flag_mov_found, 0, sizeof(flag_mov_found));
- } else if (inst->opcode == FS_OPCODE_MOV_DISPATCH_TO_FLAGS) {
- if (!flag_mov_found[inst->flag_subreg])
- flag_mov_found[inst->flag_subreg] = true;
- else
- inst->remove(block);
- } else if (inst->writes_flag()) {
- flag_mov_found[inst->flag_subreg] = false;
- }
- }
-}
-
bool
fs_visitor::run()
{
@@ -3518,8 +3489,6 @@ fs_visitor::run()
assign_constant_locations();
demote_pull_constants();
- opt_drop_redundant_mov_to_flags();
-
#define OPT(pass, args...) do { \
pass_num++; \
bool this_progress = pass(args); \
diff --git a/src/mesa/drivers/dri/i965/brw_fs.h
b/src/mesa/drivers/dri/i965/brw_fs.h
index d9150c3..ccfb12d 100644
--- a/src/mesa/drivers/dri/i965/brw_fs.h
+++ b/src/mesa/drivers/dri/i965/brw_fs.h
@@ -434,7 +434,6 @@ public:
bool try_constant_propagate(fs_inst *inst, acp_entry *entry);
bool opt_copy_propagate_local(void *mem_ctx, bblock_t *block,
exec_list *acp);
- void opt_drop_redundant_mov_to_flags();
bool opt_register_renaming();
bool register_coalesce();
bool compute_to_mrf();
--
2.0.4
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