ARM: Enable use of relocation type tlsldo in debug info for tls data.

This fixes PR18554.

Reviewers: Renato Golin, Keith Walker


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200735 91177308-0d34-0410-b5e6-96231b3b80d8
Add strchr(p, 0) -> p + strlen(p) to SimplifyLibCalls

Add the missing transformation strchr(p, 0) -> p + strlen(p) to SimplifyLibCalls
and remove the ToDo comment.

Reviewer: Duncan P.N. Exan Smith


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200736 91177308-0d34-0410-b5e6-96231b3b80d8
Revert: ARM: Enable use of relocation type tlsldo in debug info for tls data.

There seems to be a new problem with the debug info in the test case.
I'll have to investigate this.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200737 91177308-0d34-0410-b5e6-96231b3b80d8
RegAllocGreedy.cpp: Use more simple value as Hysteresis, to suppress -mfpmath-dependent behavior.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200738 91177308-0d34-0410-b5e6-96231b3b80d8
llvm-cov: Document the llvm-cov tests

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200739 91177308-0d34-0410-b5e6-96231b3b80d8
llvm-cov: Ignore missing .gcda files

When gcov is run without gcda data, it acts as if the counts are all
zero and labels the file as - to indicate that there was no data. We
should do the same.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200740 91177308-0d34-0410-b5e6-96231b3b80d8
llvm-cov: Implement the object-directory flag

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200741 91177308-0d34-0410-b5e6-96231b3b80d8
R600/SI: Fix fneg for 0.0

V_ADD_F32 with source modifier does not produce -0.0 for this. Just
manipulate the sign bit directly instead.

Also add a pattern for (fneg (fabs ...)).

Fixes a bunch of bit encoding piglit tests with radeonsi.

Reviewed-by: Tom Stellard <thomas.stellard@amd.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200743 91177308-0d34-0410-b5e6-96231b3b80d8
[CMake] Add -stdlib=libc++ to host Clang build flags before performing any header search

If LLVM_ENABLE_LIBCXX is specified, we should append -stdlib=libc++ to build
flags as early as possible, in particular, before we check for header presence
(as -stdlib=libc++ modifies header lookup rules). Otherwise we can find a header
at configure time (w/o -stdlib=libc++) but fail to find it at build time
(with -stdlib=libc++). See PR18569 for more details.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200744 91177308-0d34-0410-b5e6-96231b3b80d8
[CMake] Revert r200695 and fix the problem with missing -fno-function-sections in a different way.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200745 91177308-0d34-0410-b5e6-96231b3b80d8
ARM: fix fast-isel assertion failure

Missing braces on if meant we inserted both ARM and Thumb load for a litpool
entry. This didn't end well.

rdar://problem/15959157

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200752 91177308-0d34-0410-b5e6-96231b3b80d8
llvm-cov: Implement the preserve-paths flag

Until now, when a path in a gcno file included a directory, we would
emit our .gcov file in that directory, whereas gcov always emits the
file in the current directory. In doing so, this implements gcov's
strange name-mangling -p flag, which is needed to avoid clobbering
files when two with the same name exist in different directories.

The path mangling is a bit ugly and only handles unix-like paths, but
it's simple, and it doesn't make any guesses as to how it should
behave outside of what gcov documents. If we decide this should be
cross platform later, we can consider the compatibility implications
then.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200754 91177308-0d34-0410-b5e6-96231b3b80d8
Add a note to documentation that Clang + libstdc++ 4.7.2 can not be used to build LLD.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200758 91177308-0d34-0410-b5e6-96231b3b80d8
Revert r122395, "Fixes file extension for loadable modules on OS X."

In trunk, every users assume add_llvm_loadable_module as "loadable module" and no one sets neither SHARED, ... nor also MODULE!
Unfortunately, all loadable modules were linked as not "MODULE" but "SHARED".

If this change caused any regressions, I wish guys to fix it properly. ;)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200762 91177308-0d34-0410-b5e6-96231b3b80d8
[CMake] add_llvm_loadable_module: Fixup r200762, I mis-eliminated wrong line. :(

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200763 91177308-0d34-0410-b5e6-96231b3b80d8
[CMake] LLVM-Config.cmake: Split explicit_map_components_to_libraries and introduce llvm_map_components_to_libnames and llvm_expand_dependencies.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200764 91177308-0d34-0410-b5e6-96231b3b80d8
[CMake] Get rid of llvm_config() to expand dependencies.

CMake's target_link_libraries() will manage dependencies.

Configuration time may be reduced by a few seconds.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200765 91177308-0d34-0410-b5e6-96231b3b80d8
Implemented support for Process::GetRandomNumber on Windows.

Patch thanks to Stephan Tolksdorf!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200767 91177308-0d34-0410-b5e6-96231b3b80d8
ARM & AArch64: merge NEON absolute compare intrinsics

There was an extremely confusing proliferation of LLVM intrinsics to implement
the vacge & vacgt instructions. This combines them all into two polymorphic
intrinsics, shared across both backends.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200768 91177308-0d34-0410-b5e6-96231b3b80d8
OS X: the correct function is __sincospif_stret, not __sincospi_stretf

rdar://problem/13729466

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200771 91177308-0d34-0410-b5e6-96231b3b80d8