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

i965/nir: Do optimizations again just before lowering source mods.

Browse Source 
We want to run CSE and algebraic optimizations again after lowering IO.
Some of the passes in the optimization loop don't handle saturates and
other modifiers, so run it before lowering to source modifiers.

total instructions in shared programs: 6046190 -> 6045768 (-0.01%)
instructions in affected programs:     22406 -> 21984 (-1.88%)
helped:                                47
HURT:                                  0
GAINED:                                0
LOST:                                  0

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
This commit is contained in:
Kenneth Graunke
2015-01-19 22:11:39 -08:00
parent 9b5efac461
commit faa38e16aa
1 changed files with 21 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/mesa/drivers/dri/i965/brw_fs_nir.cpp
+21 -13
View File
@@ -26,20 +26,9 @@
#include "glsl/nir/glsl_to_nir.h"
#include "brw_fs.h"
void
fs_visitor::emit_nir_code()
static void
nir_optimize(nir_shader *nir)
{
/* first, lower the GLSL IR shader to NIR */
lower_output_reads(shader->base.ir);
nir_shader *nir = glsl_to_nir(shader->base.ir, NULL, true);
nir_validate_shader(nir);
nir_lower_global_vars_to_local(nir);
nir_validate_shader(nir);
nir_split_var_copies(nir);
nir_validate_shader(nir);
bool progress;
do {
progress = false;
@@ -58,6 +47,23 @@ fs_visitor::emit_nir_code()
progress |= nir_opt_constant_folding(nir);
nir_validate_shader(nir);
} while (progress);
}
void
fs_visitor::emit_nir_code()
{
/* first, lower the GLSL IR shader to NIR */
lower_output_reads(shader->base.ir);
nir_shader *nir = glsl_to_nir(shader->base.ir, NULL, true);
nir_validate_shader(nir);
nir_lower_global_vars_to_local(nir);
nir_validate_shader(nir);
nir_split_var_copies(nir);
nir_validate_shader(nir);
nir_optimize(nir);
/* Lower a bunch of stuff */
nir_lower_var_copies(nir);
@@ -81,6 +87,8 @@ fs_visitor::emit_nir_code()
nir_lower_atomics(nir);
nir_validate_shader(nir);
nir_optimize(nir);
nir_lower_to_source_mods(nir);
nir_validate_shader(nir);
nir_copy_prop(nir);