KonstantinSeurer
/
mesa
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

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 <robdclark@gmail.com>
This commit is contained in:
Rob Clark 2018-02-04 12:52:24 -05:00
parent ffb00f6841
commit 2a2099a875
1 changed files with 6 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
src/gallium/drivers/freedreno/ir3/ir3_depth.c
View File

@ -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: */