Mesa (master): st/mesa: call st_nir_opts for linked shaders only once
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Fri Oct 18 00:33:45 UTC 2019
Module: Mesa
Branch: master
Commit: 7908e82f60fbe40d66fb10d9085afe6802a85b33
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=7908e82f60fbe40d66fb10d9085afe6802a85b33
Author: Marek Olšák <marek.olsak at amd.com>
Date: Mon Oct 7 22:15:01 2019 -0400
st/mesa: call st_nir_opts for linked shaders only once
The removed st_nir_opts calls are mostly redundant.
There is an improvement with shader-db on radeonsi:
Before:
real 1m54.047s
user 28m37.857s
sys 0m7.573s
After:
real 1m52.012s
user 28m3.412s
sys 0m7.808s
Reviewed-by: Timothy Arceri <tarceri at itsqueeze.com>
---
src/mesa/state_tracker/st_glsl_to_nir.cpp | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/src/mesa/state_tracker/st_glsl_to_nir.cpp b/src/mesa/state_tracker/st_glsl_to_nir.cpp
index 35494761ac1..f7e42646c80 100644
--- a/src/mesa/state_tracker/st_glsl_to_nir.cpp
+++ b/src/mesa/state_tracker/st_glsl_to_nir.cpp
@@ -387,7 +387,6 @@ st_nir_preprocess(struct st_context *st, struct gl_program *prog,
/* before buffers and vars_to_ssa */
NIR_PASS_V(nir, gl_nir_lower_bindless_images);
- st_nir_opts(nir);
/* TODO: Change GLSL to not lower shared memory. */
if (prog->nir->info.stage == MESA_SHADER_COMPUTE &&
@@ -403,6 +402,9 @@ st_nir_preprocess(struct st_context *st, struct gl_program *prog,
NIR_PASS_V(nir, nir_opt_constant_folding);
if (lower_64bit) {
+ /* Clean up the IR before 64-bit lowering. */
+ st_nir_opts(nir);
+
bool lowered_64bit_ops = false;
if (options->lower_doubles_options) {
NIR_PASS(lowered_64bit_ops, nir, nir_lower_doubles,
@@ -653,6 +655,7 @@ st_link_nir(struct gl_context *ctx,
{
struct st_context *st = st_context(ctx);
struct pipe_screen *screen = st->pipe->screen;
+ unsigned num_linked_shaders = 0;
unsigned last_stage = 0;
for (unsigned i = 0; i < MESA_SHADER_STAGES; i++) {
@@ -660,6 +663,8 @@ st_link_nir(struct gl_context *ctx,
if (shader == NULL)
continue;
+ num_linked_shaders++;
+
const nir_shader_compiler_options *options =
st->ctx->Const.ShaderCompilerOptions[shader->Stage].NirOptions;
struct gl_program *prog = shader->Program;
@@ -757,6 +762,12 @@ st_link_nir(struct gl_context *ctx,
nir_shader *nir = shader->Program->nir;
+ /* Linked shaders are optimized in st_nir_link_shaders. Separate shaders
+ * and shaders with a fixed-func VS or FS are optimized here.
+ */
+ if (num_linked_shaders == 1)
+ st_nir_opts(nir);
+
NIR_PASS_V(nir, st_nir_lower_wpos_ytransform, shader->Program,
st->pipe->screen);
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