[PATCH] D105629: [TSan] Add SystemZ support

[Ilya Leoshkevich via Phabricator via cfe-commits]

iii updated this revision to Diff 358363.
iii added a comment.

Based on Ulrich's feedback I tested the series on RHEL7, which, in
addition to an old kernel, contains an old glibc and an old toolchain.
This uncovered a few extra issues, which are fixed here:

- Call __tls_get_offset() in order to force TLS allocation.
- Align thread_registry_placeholder.
- Protect the address space "tail" in two steps: until the 4-level page table boundary (this must succeed) and then until the 5-level page table boundary (this may fail).

Also, the Go support is finally working
(https://github.com/iii-i/go/tree/tsan-s390x), so, since we need to
make another round anyway, I've included the LLVM part here as well.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D105629/new/

https://reviews.llvm.org/D105629

Files:
  clang/lib/Driver/ToolChains/Linux.cpp
  compiler-rt/cmake/config-ix.cmake
  compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc
  compiler-rt/lib/sanitizer_common/sanitizer_linux.cpp
  compiler-rt/lib/sanitizer_common/sanitizer_linux_libcdep.cpp
  compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.h
  compiler-rt/lib/tsan/CMakeLists.txt
  compiler-rt/lib/tsan/go/buildgo.sh
  compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp
  compiler-rt/lib/tsan/rtl/tsan_interface.h
  compiler-rt/lib/tsan/rtl/tsan_platform.h
  compiler-rt/lib/tsan/rtl/tsan_platform_linux.cpp
  compiler-rt/lib/tsan/rtl/tsan_platform_posix.cpp
  compiler-rt/lib/tsan/rtl/tsan_rtl.cpp
  compiler-rt/lib/tsan/rtl/tsan_rtl_s390x.S
  compiler-rt/test/tsan/CMakeLists.txt
  compiler-rt/test/tsan/ignore_lib0.cpp
  compiler-rt/test/tsan/ignore_lib1.cpp
  compiler-rt/test/tsan/ignore_lib5.cpp
  compiler-rt/test/tsan/map32bit.cpp
  compiler-rt/test/tsan/mmap_large.cpp
  llvm/lib/Transforms/Instrumentation/ThreadSanitizer.cpp
  llvm/utils/gn/secondary/compiler-rt/lib/tsan/BUILD.gn

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