Although this function currently only initializes the KILL set, it will
soon initialize other data flow sets as well.
Signed-off-by: Kenneth Graunke <kenn...@whitecape.org>
---
src/mesa/drivers/dri/i965/brw_fs_copy_propagation.cpp | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/src/mesa/drivers/dri/i965/brw_fs_copy_propagation.cpp
b/src/mesa/drivers/dri/i965/brw_fs_copy_propagation.cpp
index a00dde4..7aff36b 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_copy_propagation.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_copy_propagation.cpp
@@ -76,7 +76,7 @@ public:
fs_copy_prop_dataflow(void *mem_ctx, cfg_t *cfg,
exec_list *out_acp[ACP_HASH_SIZE]);
- void setup_kills();
+ void setup_initial_values();
void run();
void *mem_ctx;
@@ -128,16 +128,16 @@ fs_copy_prop_dataflow::fs_copy_prop_dataflow(void
*mem_ctx, cfg_t *cfg,
assert(next_acp == num_acp);
- setup_kills();
+ setup_initial_values();
run();
}
/**
- * Walk the set of instructions in the block, marking which entries in the acp
- * are killed by the block.
+ * Set up initial values for each of the data flow sets, prior to running
+ * the fixed-point algorithm.
*/
void
-fs_copy_prop_dataflow::setup_kills()
+fs_copy_prop_dataflow::setup_initial_values()
{
for (int b = 0; b < cfg->num_blocks; b++) {
bblock_t *block = cfg->blocks[b];
@@ -148,6 +148,7 @@ fs_copy_prop_dataflow::setup_kills()
if (inst->dst.file != GRF)
continue;
+ /* Mark ACP entries which are killed by this instruction. */
for (int i = 0; i < num_acp; i++) {
if (inst != acp[i]->inst &&
(inst->overwrites_reg(acp[i]->dst) ||
--
1.8.3.4
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