This reverts commit 0c0aa56cdcf1fe3970a5f3875db412530512fc07.
This time with the following fixes for buildbot failures:
- Add underscore prefixes to symbol names on Apple platforms.
- Modify the test so that it skips the crash tests on platforms where
they are not expected to pass:
- Platforms that implement FEAT_PAuth but not FEAT_FPAC (e.g.
Apple M1, Cortex-A78C)
- Platforms where DA key is disabled (e.g. older Linux kernels,
Linux kernels with PAC disabled, likely Windows)
Original commit message follows:
The emulated PAC runtime functions emulate the ARMv8.3a pointer
authentication instructions and are intended for use in heterogeneous
testing environments. For more information, see the associated RFC:
https://discourse.llvm.org/t/rfc-emulated-pac/85557
Reviewers: mstorsjo, pawosm-arm, atrosinenko
Reviewed By: atrosinenko
Pull Request: https://github.com/llvm/llvm-project/pull/148094
As well as followup "builtins: Speculative MSVC fix."
This reverts commits 5b1db59fb87b4146f827d17396f54ef30ae0dc40 and
f1c4df5b7bb79efb3e9be7fa5f8176506499d0a6.
Needs fixes for failing tests which will take time to implement.
Introduced a cmake option that is disabled by default that suppresses
searching via the PATH variable for a symbolizer. The option will be
enabled for downstream builds where the user will need to specify the
symbolizer path more explicitly, e.g., by using ASAN_SYMBOLIZER_PATH.
COMPILER_RT_EXEC_OUTPUT_DIR is expected to be the path where
hwasan_symbolize is installed, i.e. the bin subdirectory of the
build directory, but we were incorrectly setting it to the install
location of the runtime libraries. Fix it.
b1be21394e9c was reverted in 3ac75ee8ec.
This reverts commit 18f4b7e4a862c11816e62cc72fb2a4ca8fac1987, as well
as follow-ups a69d2a18d207947a25838dd01d2116bee384b75b and
4a6b56960f445d111adc9aef799acad8c6ca41f0.
Bots are now failing check-hwasan with
llvm-lit: .../llvm/utils/lit/lit/llvm/subst.py:133: fatal: Did not find
hwasan_symbolize in .../out/gn/stage2_unix/bin
This time it's the right fix for sure!
Bots are currently failing check-hwasan with
llvm-lit: .../llvm/utils/lit/lit/llvm/subst.py:133: fatal: Did not find
hwasan_symbolize in /.../out/gn/lib/clang/20/lib/linux
Maybe this fixes that.
See also llvm/utils/gn/secondary/compiler-rt/lib/hwasan/scripts/BUILD.gn.
Issue: #105181
extendhfxf2 calls extendhfXfy to convert _Float16 to double, then type
casts this converted value to long double.
__uint128_t may not be available on all architectures. Thus I din't use
extendhfXfy to widen precision to 128 bits.
