llvm-project

f55416b6 - [DebugInfo][HIP] Set DW_AT_language field to DW_LANG_HIP when AMD clang is used (#181738)

[DebugInfo][HIP] Set DW_AT_language field to DW_LANG_HIP when AMD clang is used (#181738) Before this change, HIP applications compiled with AMD clang would set the `DW_AT_language` field to `DW_LANG_C_plus_plus_14`: ``` llvm-dwarfdump hello hello: file format elf64-x86-64 .debug_info contents: 0x00000000: ... 0x0000000c: DW_TAG_compile_unit ... ------> DW_AT_language (DW_LANG_C_plus_plus_14) DW_AT_name ("helloworld.cpp") ... ``` This change update the language tag to `DW_LANG_HIP` for these applications: ``` llvm-dwarfdump hello hello: file format elf64-x86-64 .debug_info contents: 0x00000000: ... 0x0000000c: DW_TAG_compile_unit ... ------> DW_AT_language (DW_LANG_HIP) DW_AT_name ("helloworld.cpp") ... ``` Also added a test to check for the new tag (`debug-info-language-hip.hip`). The primary motivation for this change is that ROCgdb has to use a workaround to detect that a program is a HIP application. This removes the guessing and allows proper detection of the HIP language. ROCgdb [already has support for DW_LANG_HIP](https://github.com/ROCm/ROCgdb/commit/316e8393f2ad).