[llvm] [llvm-dwarfdump] Make --verify for .debug_names multithreaded. (PR #127281)

[via llvm-commits]

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@@ -5,7 +5,7 @@
 # RUN: yaml2obj %p/Inputs/verify_split_dwarf_debug_names_ftus_exe.yaml > %t1/a.out
 # RUN: yaml2obj %p/Inputs/verify_split_dwarf_debug_names_ftus_dwo.yaml > %t1/main.dwo
 # RUN: cd %t1
-# RUN: llvm-dwarfdump --verify %t1/a.out | FileCheck %s
+# RUN: llvm-dwarfdump --verify --verify-num-threads 1 %t1/a.out | FileCheck %s
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youngd007 wrote:

It's good that all these tests show that the output with the change and a single thread is the same, but could we add a test where there are two threads?
As Adrian inquired, is the output deterministic?  I assume JSON definitely still is, but what about the raw output?  @adrian-prantl , is that what you're asking about? 

https://github.com/llvm/llvm-project/pull/127281