Add a testcase, enabled only on arm, for llvm-gcc r132366.

llvm-svn: 132409

llvm/test/FrontendC/struct-matching-constraint.c

@@ -0,0 +1,19 @@
+// RUN: %llvmgcc -S -march=armv7a %s 
+
+// XFAIL: *
+// XTARGET: arm
+
+typedef struct __simd128_uint16_t
+{
+  __neon_uint16x8_t val;
+} uint16x8_t;
+
+void b(uint16x8_t sat, uint16x8_t luma)
+{
+  __asm__("vmov.16 %1, %0   \n\t"
+                                           "vtrn.16 %0, %1   \n\t"
+   :"=w"(luma), "=w"(sat)
+   :"0"(luma)
+   );
+
+}