[llvm] [DebugInfo] Make DISubprogram's hashing always produce the same result (PR #90770)

[Alex Langford via llvm-commits]

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@@ -1184,4 +1186,52 @@ TEST(MetadataTest, DbgVariableRecordConversionRoutines) {
   UseNewDbgInfoFormat = false;
 }
 
+// Test that the hashing function for DISubprograms produce the same result
+// after replacing the temporary scope.
+TEST(DIBuilder, HashingDISubprogram) {
+  LLVMContext Ctx;
+  std::unique_ptr<Module> M(new Module("MyModule", Ctx));
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bulbazord wrote:

suggestion: `make_unique`?

https://github.com/llvm/llvm-project/pull/90770