[clang] [CodeGen] Add TBAA struct path info for array members (PR #137719)

[Ivan Kosarev via cfe-commits]

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@@ -28,25 +30,39 @@ int bar(C *c) {
 
 int bar2(C *c) {
 // CHECK-NEW-LABEL: _Z4bar2P1C
-// CHECK-NEW: load i32, {{.*}}, !tbaa [[TAG_int:!.*]]
+// CHECK-NEW: load i32, {{.*}}, !tbaa [[TAG_C_x:!.*]]
   return c->x[2];
 }
 
 int bar3(C *c, int j) {
 // CHECK-NEW-LABEL: _Z4bar3P1Ci
-// CHECK-NEW: load i32, {{.*}}, !tbaa [[TAG_int:!.*]]
+// CHECK-NEW: load i32, {{.*}}, !tbaa [[TAG_C_x]]
   return c->x[j];
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kosarev wrote:

Am I reading this right that the tag now says we access a 4-byte int in C at offset 4?

https://github.com/llvm/llvm-project/pull/137719