[clang] [flang] [libcxx] [llvm] [llvm-reduce]: print short form, actionable names in the log (PR #132813)

[Matt Arsenault via llvm-commits]

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@@ -17,8 +17,8 @@
 #include "Delta.h"
 
 namespace llvm {
-void reduceAliasesDeltaPass(TestRunner &Test);
-void reduceIFuncsDeltaPass(TestRunner &Test);
+void reduceAliasesDeltaPass(TestRunner &Test, StringRef PassMessage);
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arsenm wrote:

Returning the function_ref is an unnecessary indirection. The entry point signatures should just change to void(Oracle &, ReducerWorkitem&). The table can directly refer to those 

https://github.com/llvm/llvm-project/pull/132813