jay: load_simd_width_intel

dEQP-GLES31.functional.shaders.arrays_of_arrays.es31.array_access.dynamic_expression_access_fragment

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/40960>

src/intel/compiler/jay/jay_nir.c

@@ -10,6 +10,7 @@
 #include "jay_private.h"
 #include "nir.h"
 #include "nir_builder.h"
+#include "nir_intrinsics.h"
 
 /*
  * Jay-to-NIR relies on a careful indexing of defs: every 32-bit word has
@@ -100,6 +101,12 @@ jay_nir_lower_simd(nir_builder *b, nir_intrinsic_instr *intr, void *simd_)
       return true;
    }
 
+   /* Just a constant */
+   if (intr->intrinsic == nir_intrinsic_load_simd_width_intel) {
+      nir_def_replace(&intr->def, nir_imm_int(b, *simd_width));
+      return true;
+   }
+
    /* Note: we don't treat read_invocation specially because there's little
     * benefit but doing so would require expensive uniformizing in some cases.
     */