DataFlowSanitizer: Prefix the name of each instrumented function with "dfs$".

DFSan changes the ABI of each function in the module.  This makes it possible
for a function with the native ABI to be called with the instrumented ABI,
or vice versa, thus possibly invoking undefined behavior.  A simple way
of statically detecting instances of this problem is to prepend the prefix
"dfs$" to the name of each instrumented-ABI function.

This will not catch every such problem; in particular function pointers passed
across the instrumented-native barrier cannot be used on the other side.
These problems could potentially be caught dynamically.

Differential Revision: http://llvm-reviews.chandlerc.com/D1373

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189052 91177308-0d34-0410-b5e6-96231b3b80d8
DataFlowSanitizer: Factor the wrapper builder out to buildWrapperFunction.

Differential Revision: http://llvm-reviews.chandlerc.com/D1441

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189053 91177308-0d34-0410-b5e6-96231b3b80d8
DataFlowSanitizer: Replace non-instrumented aliases of instrumented functions, and vice versa, with wrappers.

Differential Revision: http://llvm-reviews.chandlerc.com/D1442

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189054 91177308-0d34-0410-b5e6-96231b3b80d8
R600/SI: Fix another case of illegal VGPR to SGPR copy

This fixes a crash in Unigine Tropics.

https://bugs.freedesktop.org/show_bug.cgi?id=68389

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189057 91177308-0d34-0410-b5e6-96231b3b80d8
FileCheckize some tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189060 91177308-0d34-0410-b5e6-96231b3b80d8
Check only if we have this attribute. If it's not an attribute, then it's assumed false.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189063 91177308-0d34-0410-b5e6-96231b3b80d8
Fix some tests. The 'false' version just omits the attribute altogether.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189065 91177308-0d34-0410-b5e6-96231b3b80d8
Update to remove the no-frame-pointer-elim-non-leaf flag if it was set to 'false'.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189068 91177308-0d34-0410-b5e6-96231b3b80d8
[stack protector] Work around an issue with the BMOVPCB_CALL instruction on ARM by disabling does not return on __stack_chk_fail.

This is to fix the bots while I look to see if there is something I can do here.

rdar://14811848

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189076 91177308-0d34-0410-b5e6-96231b3b80d8
Update StripDeadDebugInfo to use DebugInfoFinder so that it is no longer stale to the point of not working and more resilient to debug info changes.

The current version of StripDeadDebugInfo became stale and no longer actually
worked since it was expecting an older version of debug info.

This patch updates it to use DebugInfoFinder and the modern DebugInfo classes as
much as possible to make it more redundent to such changes. Additionally, the
only place where that was avoided (the code where we replace the old sets with
the new), I call verify on the DIContextUnit implying that if the format changes
and my live set changes no longer make sense an assert will be hit. In order to
ensure that that occurs I have included a test case.

The actual stripping of the dead debug info follows the same strategy as was
used before in this class: find the live set and replace the old set in the
given compile unit (which may contain dead global variables/functions) with the
new live one.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189078 91177308-0d34-0410-b5e6-96231b3b80d8
Filecheckize some tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189079 91177308-0d34-0410-b5e6-96231b3b80d8
[PR11606] ocaml bindings tests produce binaries in source dir

 - Workaround for ocamlopt producing outputs adjacent to its source inputs, by
   having the tests copy the inputs into temporary directories in the output
   paths before building.

 - Patch by edward-san.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189081 91177308-0d34-0410-b5e6-96231b3b80d8
Add an OtherPreserved field to the CalleeSaved TableGen class.

This field specifies registers that are preserved across function calls,
but that should not be included in the generates SaveList array.

This can be used ot generate regmasks for architectures that save
registers through other means, like SPARC's register windows.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189084 91177308-0d34-0410-b5e6-96231b3b80d8
Use register masks on SPARC call instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189085 91177308-0d34-0410-b5e6-96231b3b80d8
lto/CMakeLists.txt: Cut the dep to intrinsics_gen. LTO doesn't depend on it and LTO_static doesn't depend on anything.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189086 91177308-0d34-0410-b5e6-96231b3b80d8