glsl/linker: skip optimisations for SPIR-V shaders

There is no IR anyway, so the only thing they would achieve is to
incorrectly remove variables.

1 files changed, 9 insertions, 7 deletions

diff --git a/src/compiler/glsl/linker.cpp b/src/compiler/glsl/linker.cpp
index d233fdd1a2..de634772ce 100644
--- a/src/compiler/glsl/linker.cpp
+++ b/src/compiler/glsl/linker.cpp
@@ -5018,15 +5018,17 @@ link_shaders(struct gl_context *ctx, struct gl_shader_program *prog)
          lower_tess_level(prog->_LinkedShaders[i]);
       }
 
-      /* Call opts before lowering const arrays to uniforms so we can const
-       * propagate any elements accessed directly.
-       */
-      linker_optimisation_loop(ctx, prog->_LinkedShaders[i]->ir, i);
-
-      /* Call opts after lowering const arrays to copy propagate things. */
-      if (lower_const_arrays_to_uniforms(prog->_LinkedShaders[i]->ir, i))
+      if (!spirv) {
+         /* Call opts before lowering const arrays to uniforms so we can const
+          * propagate any elements accessed directly.
+          */
          linker_optimisation_loop(ctx, prog->_LinkedShaders[i]->ir, i);
 
+         /* Call opts after lowering const arrays to copy propagate things. */
+         if (lower_const_arrays_to_uniforms(prog->_LinkedShaders[i]->ir, i))
+            linker_optimisation_loop(ctx, prog->_LinkedShaders[i]->ir, i);
+      }
+
       propagate_invariance(prog->_LinkedShaders[i]->ir);
    }