This way does not require a __sanitizer_cov_dump() call. That's
important on Android, where apps can be killed at arbitrary time.
We write raw PCs to disk instead of module offsets; we also write
memory layout to a separate file. This increases dump size by the
factor of 2 on 64-bit systems.
llvm-svn: 209653
Call it "libclang_rt.builtins-<arch>.a" to be consistent
with sanitizers/profile libraries naming. Modify Makefile
and CMake build systems and Clang driver accordingly.
Fixes PR19822.
llvm-svn: 209473
Generalize StackDepot and create a new specialized instance of it to
efficiently (i.e. without duplicating stack trace data) store the
origin history tree.
This reduces memory usage for chained origins roughly by an order of
magnitude.
Most importantly, this new design allows us to put two limits on
stored history data (exposed in MSAN_OPTIONS) that help avoid
exponential growth in used memory on certain workloads.
See comments in lib/msan/msan_origin.h for more details.
llvm-svn: 209284
This change also enables asm instrumentation in asan tests that was
accidentally disabled yearlier, and adds a sanity test for that.
Patch by Yuri Gorshenin.
llvm-svn: 209282
For Linux/x86-64, pointers passed to internal_syscall should be casted
to uptr first. Otherwise, they won't be properly extended to 64-bit for
x32.
Patch by H.J. Lu
llvm-svn: 209278
The patch adds better target_triple and target_arch defaults for lit tests,
which allows us to XFAIL tests based on architecture.
Was:
target_triple = LLVM_DEFAULT_TARGET_TRIPLE
target_arch = HOST_ARCH
Now:
target_triple = COMPILER_RT_TEST_TARGET_TRIPLE
, otherwise LLVM_DEFAULT_TARGET_TRIPLE
target_arch = first item in COMPILER_RT_TEST_TARGET_TRIPLE
Differential Revision: http://reviews.llvm.org/D3855
llvm-svn: 209256
Summary:
Sandboxed code may now pass additional arguments to
__sanitizer_sandbox_on_notify() to force all coverage data to be dumped to a
single file (the default is one file per module). The user may supply a file or
socket to write to. The latter option can be used to broker out the file writing
functionality. If -1 is passed, we pre-open a file.
llvm-svn: 209121
The instrprofile-write-file-only test was failing on the builtbots. The runtime
library initialization is explicitly being discarded to avoid the atexit hook.
However, this would also prevent the filename from being initialized. Thus,
when the write file was invoked, the filename would not be setup, and the test
would fail as the profiling data would never be written out. Explicitly
initialize the filename to ensure that the data is written out when requested.
This should hopefully finally get the build bots all green again.
llvm-svn: 209099
Evgeniy Stepanov