[clang] [Clang][CodeGen] Add metadata for load from reference (PR #98746)

[Eli Friedman via cfe-commits]

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@@ -20,10 +20,10 @@ void test_add_template() {
   // CHECK:       %call = call noundef <10 x float> @_Z3addIfLj2ELj5EEN8MyMatrixIT_XT0_EXT1_EE8matrix_tERS2_S4_(ptr noundef nonnull align 4 dereferenceable(40) %Mat1, ptr noundef nonnull align 4 dereferenceable(40) %Mat2)
 
   // CHECK-LABEL: define linkonce_odr noundef <10 x float> @_Z3addIfLj2ELj5EEN8MyMatrixIT_XT0_EXT1_EE8matrix_tERS2_S4_(
-  // NOOPT:       [[MAT1:%.*]] = load <10 x float>, ptr {{.*}}, align 4{{$}}
-  // NOOPT:       [[MAT2:%.*]] = load <10 x float>, ptr {{.*}}, align 4{{$}}
-  // OPT:         [[MAT1:%.*]] = load <10 x float>, ptr {{.*}}, align 4, !tbaa !{{[0-9]+}}{{$}}
-  // OPT:         [[MAT2:%.*]] = load <10 x float>, ptr {{.*}}, align 4, !tbaa !{{[0-9]+}}{{$}}
+  // NOOPT:       [[MAT1:%.*]] = load <10 x float>, ptr {{.*}}, align 4{{.*}}
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efriedma-quic wrote:

`{{.*}}` doesn't do anything useful here.  If you think there isn't anything useful to check here, just delete the end-of-line check.

Deleting the end-of-line checks here is... probably fine?  Maybe at least check for a comma, so it's clear there's more text following.  CC @fhahn 

https://github.com/llvm/llvm-project/pull/98746