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authorRob Clark <[email protected]>2018-02-04 12:52:24 -0500
committerRob Clark <[email protected]>2018-02-10 14:54:58 -0500
commit2a2099a875568f2d979f0030aa6291ed88366046 (patch)
tree97a6619aae37b5dec8eeb4442a635da69fe5eb54 /src/gallium/drivers/freedreno/ir3
parentffb00f6841768e842a010f895b52314e1eeb5828 (diff)
freedreno/ir3: "boost" the depth of if/else condition
Account for the move to predicate register, to try to avoid needing to insert extra NOPs later. Signed-off-by: Rob Clark <[email protected]>
Diffstat (limited to 'src/gallium/drivers/freedreno/ir3')
-rw-r--r--src/gallium/drivers/freedreno/ir3/ir3_depth.c11
1 files changed, 6 insertions, 5 deletions
diff --git a/src/gallium/drivers/freedreno/ir3/ir3_depth.c b/src/gallium/drivers/freedreno/ir3/ir3_depth.c
index b58bf8ff3ae..270d53dbed7 100644
--- a/src/gallium/drivers/freedreno/ir3/ir3_depth.c
+++ b/src/gallium/drivers/freedreno/ir3/ir3_depth.c
@@ -133,7 +133,7 @@ ir3_insert_by_depth(struct ir3_instruction *instr, struct list_head *list)
}
static void
-ir3_instr_depth(struct ir3_instruction *instr)
+ir3_instr_depth(struct ir3_instruction *instr, unsigned boost)
{
struct ir3_instruction *src;
@@ -147,13 +147,14 @@ ir3_instr_depth(struct ir3_instruction *instr)
unsigned sd;
/* visit child to compute it's depth: */
- ir3_instr_depth(src);
+ ir3_instr_depth(src, boost);
/* for array writes, no need to delay on previous write: */
if (i == 0)
continue;
sd = ir3_delayslots(src, instr, i) + src->depth;
+ sd += boost;
instr->depth = MAX2(instr->depth, sd);
}
@@ -189,15 +190,15 @@ ir3_depth(struct ir3 *ir)
ir3_clear_mark(ir);
for (i = 0; i < ir->noutputs; i++)
if (ir->outputs[i])
- ir3_instr_depth(ir->outputs[i]);
+ ir3_instr_depth(ir->outputs[i], 0);
list_for_each_entry (struct ir3_block, block, &ir->block_list, node) {
for (i = 0; i < block->keeps_count; i++)
- ir3_instr_depth(block->keeps[i]);
+ ir3_instr_depth(block->keeps[i], 0);
/* We also need to account for if-condition: */
if (block->condition)
- ir3_instr_depth(block->condition);
+ ir3_instr_depth(block->condition, 6);
}
/* mark un-used instructions: */