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-rw-r--r--src/compiler/glsl/glsl_parser_extras.cpp14
-rw-r--r--src/compiler/glsl/linker.cpp16
2 files changed, 23 insertions, 7 deletions
diff --git a/src/compiler/glsl/glsl_parser_extras.cpp b/src/compiler/glsl/glsl_parser_extras.cpp
index b12cf3d90c0..e97cbf4b826 100644
--- a/src/compiler/glsl/glsl_parser_extras.cpp
+++ b/src/compiler/glsl/glsl_parser_extras.cpp
@@ -1949,12 +1949,20 @@ _mesa_glsl_compile_shader(struct gl_context *ctx, struct gl_shader *shader,
assign_subroutine_indexes(shader, state);
lower_subroutine(shader->ir, state);
+
/* Do some optimization at compile time to reduce shader IR size
* and reduce later work if the same shader is linked multiple times
*/
- while (do_common_optimization(shader->ir, false, false, options,
- ctx->Const.NativeIntegers))
- ;
+ if (ctx->Const.GLSLOptimizeConservatively) {
+ /* Run it just once. */
+ do_common_optimization(shader->ir, false, false, options,
+ ctx->Const.NativeIntegers);
+ } else {
+ /* Repeat it until it stops making changes. */
+ while (do_common_optimization(shader->ir, false, false, options,
+ ctx->Const.NativeIntegers))
+ ;
+ }
validate_ir_tree(shader->ir);
diff --git a/src/compiler/glsl/linker.cpp b/src/compiler/glsl/linker.cpp
index f4f918a34e7..13fbb30b27b 100644
--- a/src/compiler/glsl/linker.cpp
+++ b/src/compiler/glsl/linker.cpp
@@ -5048,10 +5048,18 @@ link_shaders(struct gl_context *ctx, struct gl_shader_program *prog)
lower_tess_level(prog->_LinkedShaders[i]);
}
- while (do_common_optimization(prog->_LinkedShaders[i]->ir, true, false,
- &ctx->Const.ShaderCompilerOptions[i],
- ctx->Const.NativeIntegers))
- ;
+ if (ctx->Const.GLSLOptimizeConservatively) {
+ /* Run it just once. */
+ do_common_optimization(prog->_LinkedShaders[i]->ir, true, false,
+ &ctx->Const.ShaderCompilerOptions[i],
+ ctx->Const.NativeIntegers);
+ } else {
+ /* Repeat it until it stops making changes. */
+ while (do_common_optimization(prog->_LinkedShaders[i]->ir, true, false,
+ &ctx->Const.ShaderCompilerOptions[i],
+ ctx->Const.NativeIntegers))
+ ;
+ }
lower_const_arrays_to_uniforms(prog->_LinkedShaders[i]->ir, i);
propagate_invariance(prog->_LinkedShaders[i]->ir);