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

pan/bi: Reduce liveness calculations in DCE

Browse Source 
Forward port of fc06b8b7 ("pan/mdg: Optimize liveness computation in
DCE")

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9164>
This commit is contained in:
Alyssa Rosenzweig
2021-02-18 16:11:38 -05:00
committed by Marge Bot
parent 3a4d985997
commit 9882a59a2f
4 changed files with 20 additions and 20 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/panfrost/bifrost/bi_opt_dce.c
+16 -13
View File
@@ -34,7 +34,7 @@
*/
bool
bi_opt_dead_code_eliminate(bi_context *ctx, bi_block *block, bool soft)
bi_opt_dead_code_eliminate(bi_context *ctx, bool soft)
{
bool progress = false;
unsigned temp_count = bi_max_temp(ctx);
@@ -42,24 +42,27 @@ bi_opt_dead_code_eliminate(bi_context *ctx, bi_block *block, bool soft)
bi_invalidate_liveness(ctx);
bi_compute_liveness(ctx);
uint16_t *live = mem_dup(block->base.live_out, temp_count * sizeof(uint16_t));
bi_foreach_block(ctx, _block) {
bi_block *block = (bi_block *) _block;
uint16_t *live = mem_dup(block->base.live_out, temp_count * sizeof(uint16_t));
bi_foreach_instr_in_block_safe_rev(block, ins) {
unsigned index = bi_get_node(ins->dest[0]);
bi_foreach_instr_in_block_safe_rev(block, ins) {
unsigned index = bi_get_node(ins->dest[0]);
if (index < temp_count && !(live[index] & bi_writemask(ins))) {
if (soft || bi_side_effects(ins->op))
ins->dest[0] = bi_null();
else
bi_remove_instruction(ins);
if (index < temp_count && !(live[index] & bi_writemask(ins))) {
if (soft || bi_side_effects(ins->op))
ins->dest[0] = bi_null();
else
bi_remove_instruction(ins);
progress |= true;
progress |= true;
}
bi_liveness_ins_update(live, ins, temp_count);
}
bi_liveness_ins_update(live, ins, temp_count);
free(live);
}
free(live);
return progress;
}
src/panfrost/bifrost/bi_schedule.c
+2 -1
View File
@@ -1595,8 +1595,9 @@ bi_schedule(bi_context *ctx)
bi_block *bblock = (bi_block *) block;
bi_lower_fau(ctx, bblock);
bi_schedule_block(ctx, bblock);
bi_opt_dead_code_eliminate(ctx, bblock, true);
}
bi_opt_dead_code_eliminate(ctx, true);
}
#ifndef NDEBUG
src/panfrost/bifrost/bifrost_compile.c
+1 -5
View File
@@ -2997,11 +2997,7 @@ bifrost_compile_shader_nir(nir_shader *nir,
progress = false;
progress |= bi_opt_copy_prop(ctx);
bi_foreach_block(ctx, _block) {
bi_block *block = (bi_block *) _block;
progress |= bi_opt_dead_code_eliminate(ctx, block, false);
}
progress |= bi_opt_dead_code_eliminate(ctx, false);
} while(progress);
bi_foreach_block(ctx, _block) {
src/panfrost/bifrost/compiler.h
+1 -1
View File
@@ -745,7 +745,7 @@ void bi_print_shader(bi_context *ctx, FILE *fp);
/* BIR passes */
bool bi_opt_copy_prop(bi_context *ctx);
bool bi_opt_dead_code_eliminate(bi_context *ctx, bi_block *block, bool soft);
bool bi_opt_dead_code_eliminate(bi_context *ctx, bool soft);
void bi_opt_push_ubo(bi_context *ctx);
void bi_schedule(bi_context *ctx);
void bi_assign_scoreboard(bi_context *ctx);