Jonas Hahnfeld 66c60d9d71 [compiler-rt] Build custom libcxx with libcxxabi
This changes add_custom_libcxx to also build libcxxabi and merges
the two into a static and hermetic library.
There are multiple advantages:
1) The resulting libFuzzer doesn't expose C++ internals and looks
   like a plain C library.
2) We don't have to manually link in libstdc++ to provide cxxabi.
3) The sanitizer tests cannot interfere with an installed version
   of libc++.so in LD_LIBRARY_PATH.

Differential Revision: https://reviews.llvm.org/D58013

llvm-svn: 354212
2019-02-17 12:16:20 +00:00

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// Test that verifies TSan runtime doesn't contain compiler-emitted
// memcpy/memmove calls. It builds the binary with TSan and check's
// its objdump.
// RUN: %clang_tsan -O1 %s -o %t
// RUN: llvm-objdump -d %t | FileCheck %s
// REQUIRES: compiler-rt-optimized
int main() {
return 0;
}
// CHECK-NOT: callq {{.*<(__interceptor_)?mem(cpy|set)>}}
// tail calls:
// CHECK-NOT: jmpq {{.*<(__interceptor_)?mem(cpy|set)>}}