Mesa (master): st/mesa: lower doubles for NIR after linking
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Fri Oct 18 00:33:45 UTC 2019
Module: Mesa
Branch: master
Commit: dd4d791821736015e02886e1af4f3159aa316ff2
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=dd4d791821736015e02886e1af4f3159aa316ff2
Author: Marek Olšák <marek.olsak at amd.com>
Date: Tue Oct 15 16:49:06 2019 -0400
st/mesa: lower doubles for NIR after linking
This allows dropping 1 call to st_nir_opts, because shaders are always
optimized after linking.
Reviewed-by: Timothy Arceri <tarceri at itsqueeze.com>
---
src/mesa/state_tracker/st_glsl_to_nir.cpp | 37 ++++++++++++++-----------------
1 file changed, 17 insertions(+), 20 deletions(-)
diff --git a/src/mesa/state_tracker/st_glsl_to_nir.cpp b/src/mesa/state_tracker/st_glsl_to_nir.cpp
index f7e42646c80..c0b63ac36f8 100644
--- a/src/mesa/state_tracker/st_glsl_to_nir.cpp
+++ b/src/mesa/state_tracker/st_glsl_to_nir.cpp
@@ -336,8 +336,6 @@ st_nir_preprocess(struct st_context *st, struct gl_program *prog,
const nir_shader_compiler_options *options =
st->ctx->Const.ShaderCompilerOptions[prog->info.stage].NirOptions;
assert(options);
- bool lower_64bit =
- options->lower_int64_options || options->lower_doubles_options;
nir_shader *nir = prog->nir;
/* Set the next shader stage hint for VS and TES. */
@@ -400,24 +398,6 @@ st_nir_preprocess(struct st_context *st, struct gl_program *prog,
NIR_PASS_V(nir, gl_nir_lower_buffers, shader_program);
/* Do a round of constant folding to clean up address calculations */
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,
- st->ctx->SoftFP64, options->lower_doubles_options);
- }
- if (options->lower_int64_options) {
- NIR_PASS(lowered_64bit_ops, nir, nir_lower_int64,
- options->lower_int64_options);
- }
-
- if (lowered_64bit_ops)
- st_nir_opts(nir);
- }
}
/* Second third of converting glsl_to_nir. This creates uniforms, gathers
@@ -486,6 +466,23 @@ st_glsl_to_nir_post_opts(struct st_context *st, struct gl_program *prog,
NIR_PASS_V(nir, gl_nir_lower_atomics, shader_program, true);
NIR_PASS_V(nir, nir_opt_intrinsics);
+ /* Lower 64-bit ops. */
+ if (nir->options->lower_int64_options ||
+ nir->options->lower_doubles_options) {
+ bool lowered_64bit_ops = false;
+ if (nir->options->lower_doubles_options) {
+ NIR_PASS(lowered_64bit_ops, nir, nir_lower_doubles,
+ st->ctx->SoftFP64, nir->options->lower_doubles_options);
+ }
+ if (nir->options->lower_int64_options) {
+ NIR_PASS(lowered_64bit_ops, nir, nir_lower_int64,
+ nir->options->lower_int64_options);
+ }
+
+ if (lowered_64bit_ops)
+ st_nir_opts(nir);
+ }
+
nir_variable_mode mask = nir_var_function_temp;
nir_remove_dead_variables(nir, mask);
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