[all-commits] [llvm/llvm-project] 003b48: [BOLT][test] enable GNU extensions, use C++ compil...

[Raul Tambre via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 003b48e0cbbb69a9a1ca9ff1a6d3bda30d0c6121
      https://github.com/llvm/llvm-project/commit/003b48e0cbbb69a9a1ca9ff1a6d3bda30d0c6121
  Author: Raul Tambre <raul at tambre.ee>
  Date:   2024-11-27 (Wed, 27 Nov 2024)

  Changed paths:
    M bolt/test/AArch64/data-at-0-offset.c
    M bolt/test/AArch64/double_jump.cpp
    M bolt/test/R_ABS.pic.lld.cpp
    M bolt/test/X86/double-jump.test
    M bolt/test/X86/dwarf5-df-inlined-subroutine-gc-sections-range.test
    M bolt/test/X86/jmp-optimization.test
    M bolt/test/X86/match-functions-with-call-graph.test
    M bolt/test/pie.test
    M bolt/test/runtime/X86/instrumentation-indirect.c
    M bolt/test/runtime/bolt-reserved.cpp

  Log Message:
  -----------
  [BOLT][test] enable GNU extensions, use C++ compiler, remove unnecessary target (#117043)

1. With a Clang that doesn't default to GNU extensions they need to be enabled explicitly.
2. The X86 directory lit config sets it already, there's no reason for this test to do it by itself.
3. The C frontend executable will fail if there's for example a Clang resource file for the C++ mode that sets C++-specific options:
```
+ /home/tambre/dev/llvm/build/bin/clang --target=x86_64-unknown-linux-gnu -fPIE -fuse-ld=lld -Wl,--unresolved-symbols=ignore-all -pie -fPIC -shared /home/tambre/dev/llvm/bolt/test/R_ABS.pic.lld.cpp -o /home/tambre/dev/llvm/build/tools/bolt/test/Output/R_ABS.pic.lld.cpp.tmp.so -Wl,-q -fuse-ld=lld
clang: warning: argument unused during compilation: '-pie' [-Wunused-command-line-argument]
error: invalid argument '-std=c23' not allowed with 'C++'
```



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