[AArch64] Update clang CodeGen tests I missed in 4252f77.

These tests invoke opt and llc even though they are in the frontend.

We now do a better job of generating commuted patterns for fma so
these tests now form fmls instead of fmla+fneg.

clang/test/CodeGen/aarch64-v8.2a-neon-intrinsics-constrained.c

@@ -69,21 +69,19 @@ float16x8_t test_vfmaq_f16(float16x8_t a, float16x8_t b, float16x8_t c) {
 
 // COMMON-LABEL: test_vfms_f16
 // COMMONIR:       [[SUB:%.*]] = fneg <4 x half> %b
-// CHECK-ASM:      fneg v{{[0-9]+}}.4h, v{{[0-9]+}}.4h
 // UNCONSTRAINED:  [[ADD:%.*]] = call <4 x half> @llvm.fma.v4f16(<4 x half> [[SUB]], <4 x half> %c, <4 x half> %a)
 // CONSTRAINED:    [[ADD:%.*]] = call <4 x half> @llvm.experimental.constrained.fma.v4f16(<4 x half> [[SUB]], <4 x half> %c, <4 x half> %a, metadata !"round.tonearest", metadata !"fpexcept.maytrap")
-// CHECK-ASM:      fmla v{{[0-9]+}}.4h, v{{[0-9]+}}.4h, v{{[0-9]+}}.4h
+// CHECK-ASM:      fmls v{{[0-9]+}}.4h, v{{[0-9]+}}.4h, v{{[0-9]+}}.4h
 // COMMONIR:       ret <4 x half> [[ADD]]
 float16x4_t test_vfms_f16(float16x4_t a, float16x4_t b, float16x4_t c) {
   return vfms_f16(a, b, c);
 }
 
 // COMMON-LABEL: test_vfmsq_f16
 // COMMONIR:       [[SUB:%.*]] = fneg <8 x half> %b
-// CHECK-ASM:      fneg v{{[0-9]+}}.8h, v{{[0-9]+}}.8h
 // UNCONSTRAINED:  [[ADD:%.*]] = call <8 x half> @llvm.fma.v8f16(<8 x half> [[SUB]], <8 x half> %c, <8 x half> %a)
 // CONSTRAINED:    [[ADD:%.*]] = call <8 x half> @llvm.experimental.constrained.fma.v8f16(<8 x half> [[SUB]], <8 x half> %c, <8 x half> %a, metadata !"round.tonearest", metadata !"fpexcept.maytrap")
-// CHECK-ASM:      fmla v{{[0-9]+}}.8h, v{{[0-9]+}}.8h, v{{[0-9]+}}.8h
+// CHECK-ASM:      fmls v{{[0-9]+}}.8h, v{{[0-9]+}}.8h, v{{[0-9]+}}.8h
 // COMMONIR:       ret <8 x half> [[ADD]]
 float16x8_t test_vfmsq_f16(float16x8_t a, float16x8_t b, float16x8_t c) {
   return vfmsq_f16(a, b, c);