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Rainer Orth 682ee6c3bc [Sanitizers] Disable SANITIZER_CAN_FAST_UNWIND on all SPARC targets 
While testing my to-be-submitted Solaris sanitizer support on gcc mainline, I ran into
an issue on Solaris/SPARC (sparc-sun-solaris2.11). Initially libasan.so failed to link:

  Undefined                       first referenced
   symbol                             in file
  __sanitizer::BufferedStackTrace::FastUnwindStack(unsigned long, unsigned long, unsigned long, unsigned long, unsigned int) /var/gcc/gcc-9.0.0-20181024/11.5-gcc-gas/sparc-sun-solaris2.11/./libsanitizer/asan/.libs/libasan.so

This happens because SANITIZER_CAN_FAST_UNWIND is enabled on non-Linux
SPARC targets (cf. sanitizer_stacktrace.h), but the guard around the SPARCv8-only
definition in sanitizer_stacktrace_sparc.cc only works with clang:

clang predefines __sparcv8__ on non-Solaris, and __sparcv8 only on Solaris
gcc predefines __sparcv8 on Solaris, but __sparc_v8__ on non-Solaris

The attached patch allows for all three variants.

However, disabling SANITIZER_CAN_FAST_UNWIND on all SPARC targets
fixes a couple of testsuite failures in the Solaris asan testsuite, so for now it's better
to keep it disabled everywhere.

This allowed the libsanitizer build to complete and gave reasonable (though slightly
worse than on Solaris/x86) testsuite results.

Differential Revision: https://reviews.llvm.org/D54099

llvm-svn: 346155
 		2018-11-05 19:22:54 +00:00
clang [AST] Get aliased type info from an aliased TemplateSpecialization. 2018-11-05 17:25:26 +00:00
clang-tools-extra [clangd] don't buffer the input-mirror stream, it's used to diagnose crashes 2018-11-02 23:47:55 +00:00
compiler-rt [Sanitizers] Disable SANITIZER_CAN_FAST_UNWIND on all SPARC targets 2018-11-05 19:22:54 +00:00
debuginfo-tests [debuginfo-tests] commands.getoutput -> subprocess.check_output 2018-11-03 04:52:32 +00:00
libclc Remove redundant OVERRRIDES file 2018-11-04 00:54:46 +00:00
libcxx Fix the test for partition_copy so it is not ridiculously slow. Also, detab. 2018-11-04 17:57:25 +00:00
libcxxabi Use C++11 fallthrough attribute syntax when available and add a break 2018-11-01 18:24:03 +00:00
libunwind [CMake] Link to compiler-rt if LIBUNWIND_USE_COMPILER_RT is ON. 2018-10-08 18:35:00 +00:00
lld [COFF][LLD] Add link support for Microsoft precompiled headers OBJs 2018-11-05 19:20:47 +00:00
lldb Add a target modules dump ast command. 2018-11-05 17:40:28 +00:00
llgo Update copyright year to 2018. 2018-06-18 12:22:17 +00:00
llvm [COFF][LLD] Add link support for Microsoft precompiled headers OBJs 2018-11-05 19:20:47 +00:00
openmp [OPENMP][OFFLOADING]Change the lambda capturing flags. 2018-11-02 15:24:47 +00:00
parallel-libs Update copyright year to 2018. 2018-06-18 12:22:17 +00:00
polly Fix clang -Wimplicit-fallthrough warnings across llvm, NFC 2018-11-01 19:54:45 +00:00
README.md Update the project name in README.md 2018-10-19 00:03:01 +00:00

README.md

The LLVM Compiler Infrastructure

This directory and its subdirectories contain source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and runtime environments.