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| author | Fangrui Song <i@maskray.me> | 2021-03-09 22:21:36 -0800 |
|---|---|---|
| committer | Fangrui Song <i@maskray.me> | 2021-03-09 22:21:36 -0800 |
| commit | 9d117e7b2a399a9b2bcf53fb9b9c0946e82dc75c (patch) | |
| tree | f67b01afcc8a2f064ae6206927c85894585517ed /clang/lib/StaticAnalyzer/Checkers/StdLibraryFunctionsChecker.cpp | |
| parent | bcb53999a4ce9a8236295a6abf8b3a3e8916a0f5 (diff) | |
| download | llvm-9d117e7b2a399a9b2bcf53fb9b9c0946e82dc75c.zip llvm-9d117e7b2a399a9b2bcf53fb9b9c0946e82dc75c.tar.gz llvm-9d117e7b2a399a9b2bcf53fb9b9c0946e82dc75c.tar.bz2 | |
Define __GCC_HAVE_DWARF2_CFI_ASM if applicable
In -fno-exceptions -fno-asynchronous-unwind-tables -g0 mode,
GCC does not emit `.cfi_*` directives.
```
% diff <(gcc -fno-asynchronous-unwind-tables -dM -E a.c) <(gcc -dM -E a.c)
130a131
> #define __GCC_HAVE_DWARF2_CFI_ASM 1
```
This macro is useful because code can decide whether inline asm should include `.cfi_*` directives.
`.cfi_*` directives without `.cfi_startproc` can cause assembler errors
(integrated assembler: `this directive must appear between .cfi_startproc and .cfi_endproc directives`).
Differential Revision: https://reviews.llvm.org/D97743
Diffstat (limited to 'clang/lib/StaticAnalyzer/Checkers/StdLibraryFunctionsChecker.cpp')
0 files changed, 0 insertions, 0 deletions