[clang] [CLANG][DWARF] Do not emit -ggnu-pubnames for split dwarf version 5 (PR #83331)

[Alexander Yermolovich via cfe-commits]

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@@ -11,7 +11,6 @@
 // NOINLINE-NOT: "-fsplit-dwarf-inlining"
 // SPLIT-NOT:  "-dumpdir"
 // SPLIT:      "-debug-info-kind=constructor"
-// SPLIT-SAME: "-ggnu-pubnames"
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ayermolo wrote:

Sorry not sure I follow.
As discussed in original diff the idea is if -gsplit-dwarf with -glldb is used the -ggnu-pubnames wouldn't be passed in. Since LLDB doesn't benefit from it, and it just uses space.
A fix from original is if someone does specify -ggnu-pubnames it will be generated. I added a test for it on linux side. There is also a test on mac side that used -gsplit-dwarf with -ggnu-pubnames. On mac LLDB tunning is the default. So equivalent of passing -glldb on linux.

https://github.com/llvm/llvm-project/pull/83331