Enable promotion of SIMD fields of structs

Only look for SIMD fields if a SIMD type has been found.
Also, since more cases of local struct values are no longer marked GTF_GLOB_REF, adjust the heuristics for allocating a temporary for a struct arrRef.

Fix #7508

1 files changed, 1 insertions, 0 deletions

diff --git a/src/jit/simd.cpp b/src/jit/simd.cpp
index e0f63c2f88..21999337e5 100644
--- a/src/jit/simd.cpp
+++ b/src/jit/simd.cpp
@@ -347,6 +347,7 @@ var_types Compiler::getBaseTypeAndSizeOfSIMDType(CORINFO_CLASS_HANDLE typeHnd, u
         }
 
         *sizeBytes = size;
+        setUsesSIMDTypes(true);
     }
 
     return simdBaseType;