nouveau/codegen: Check nir_dest_num_components

instead of reaching into a union and pulling out garbage when
the dest is a reg

Cc: mesa-stable
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/8863
Reviewed-by: Karol Herbst <kherbst@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/22674>

diff --git a/src/nouveau/codegen/nv50_ir_from_nir.cpp b/src/nouveau/codegen/nv50_ir_from_nir.cpp
index 4801d42..faf756d 100644 (file)
--- a/src/nouveau/codegen/nv50_ir_from_nir.cpp
+++ b/src/nouveau/codegen/nv50_ir_from_nir.cpp
@@ -2539,7 +2539,7 @@ Converter::visit(nir_load_const_instr *insn)
 }
 
 #define DEFAULT_CHECKS \
-      if (insn->dest.dest.ssa.num_components > 1) { \
+      if (nir_dest_num_components(insn->dest.dest) > 1) { \
          ERROR("nir_alu_instr only supported with 1 component!\n"); \
          return false; \
       } \