[ASan] Fix zero_page_pc test for PowerPC

Summary:
In the Power architecture, all branch instructions ignore the 2 least
significant bits of the target address. Consequently if you branch to an
invalid address, the address reported along with the SIGSEGV will have
been rounded down to a multiple of 4. Tweak this test accordingly.

This may fix the test for ARM too, in which case we could remove
the XFAIL, but I have no way of testing that.

Reviewers: kcc, willschm, glider, samsonov

Reviewed By: samsonov

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D6167

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@221542 91177308-0d34-0410-b5e6-96231b3b80d8
PPC fix works for ARM, too

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@221551 91177308-0d34-0410-b5e6-96231b3b80d8
Use @rpath for ASan dylib in Makefiles

Reviewed at http://reviews.llvm.org/D6176



git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@221556 91177308-0d34-0410-b5e6-96231b3b80d8
[ASan] Fix stack-overflow test for PowerPC

Summary:
Tweak the asan stack overflow heuristics to cope with PowerPC64 redzones,
which are larger than on x86-64: 288 bytes for big-endian and 512 bytes
for little-endian.

Reviewers: kcc, willschm, samsonov, eugenis

Reviewed By: samsonov, eugenis

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D6168

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@221578 91177308-0d34-0410-b5e6-96231b3b80d8
[Sanitizers] Enable stack traces on FreeBSD
Differential Revision: http://reviews.llvm.org/D6086


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@221595 91177308-0d34-0410-b5e6-96231b3b80d8
[Ubsan] Fix the cast-overflow.cpp test to build on FreeBSD
Differential Revision: http://reviews.llvm.org/D6087


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@221596 91177308-0d34-0410-b5e6-96231b3b80d8
[Ubsan] Fix the missing_return.cpp test to pass on FreeBSD
Differential Revision: http://reviews.llvm.org/D6088


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@221597 91177308-0d34-0410-b5e6-96231b3b80d8
Enable running Ubsan tests on FreeBSD
Differential Revision: http://reviews.llvm.org/D6089


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@221599 91177308-0d34-0410-b5e6-96231b3b80d8
Do not build a separate x86_64h Haswell slice for the iOS simulator.

r199996 added new x86_64h slices for all the Darwin compiler_rt libraries
that had an x86_64 slice, but that is overkill for the iOS Simulator
platform where the x86_64h slice is never used.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@221610 91177308-0d34-0410-b5e6-96231b3b80d8
Build Darwin libclang_rt libraries against real SDKs.

The minimal fake SDK was very useful in allowing us to build for all
Darwin platforms without needing access to the real SDKs, but it did
not support building any of the sanitizer runtimes. It's important to
fix that. As a consequence, if you don't have the iOS SDKs installed,
we will now skip building the iOS-specific libclang_rt libraries.
rdar://problem/18825276

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@221621 91177308-0d34-0410-b5e6-96231b3b80d8
Clean up indentation after previous change.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@221622 91177308-0d34-0410-b5e6-96231b3b80d8