nir: track lowered image intrinsics to globals

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32676>

src/compiler/nir/nir_lower_image_atomics_to_global.c

@@ -95,6 +95,8 @@ lower(nir_builder *b, nir_intrinsic_instr *intr, void *data)
                                  .atomic_op = atomic_op);
    }
 
+   b->shader->info.use_lowered_image_to_global = true;
+
    /* Replace the image atomic with the global atomic. Remove the image
     * explicitly because it has side effects so is not DCE'd.
     */

src/compiler/shader_info.h

@@ -253,6 +253,14 @@ typedef struct shader_info {
    /* Use ACO instead of LLVM on AMD. */
    bool use_aco_amd:1;
 
+   /**
+    * Whether image intrinsics have been lowered to global intrinsics
+    *
+    * This is potentially useful on some implementation that need to know that
+    * an image barrier needs to include global barriers due to the lowering.
+    */
+   bool use_lowered_image_to_global:1;
+
    /**
      * Set if this shader uses legacy (DX9 or ARB assembly) math rules.
      *