In the ELFWriter when writing aliased (.set) symbols dont blindly
take type from the new symbol but merge them so that the type
is never "downgraded".

This is probably quite rare, except for IFUNC symbols which
we used to misassemble, losing the IFUNC type.

Fixes #18372.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198706 91177308-0d34-0410-b5e6-96231b3b80d8
Move the llvm mangler to lib/IR.

This makes it available to tools that don't link with target (like llvm-ar).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198708 91177308-0d34-0410-b5e6-96231b3b80d8
[x86] Kill gratuitous X86_{32,64}TargetMachine subclasses, use X86TargetMachine

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198720 91177308-0d34-0410-b5e6-96231b3b80d8
Fix a bug about generating undef operand when optimising shuffle vector and insert element in instruction combine.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198730 91177308-0d34-0410-b5e6-96231b3b80d8
llvm-readobj: add support for ARM EHABI unwind info

This adds some preliminary support for decoding ARM EHABI unwinding information.
The major functionality that remains from complete support is bytecode
translation.

Each Unwind Index Table is printed out as a separate entity along with its
section index, name, offset, and entries.

Each entry lists the function address, and if possible, the name, of the
function to which it corresponds.  The encoding model, personality routine or
index, and byte code is also listed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198734 91177308-0d34-0410-b5e6-96231b3b80d8
ARM IAS: properly handle expression operands

Operands which involved label arithemetic would previously fail to parse.  This
corrects that by adding the additional case for the shift operand validation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198735 91177308-0d34-0410-b5e6-96231b3b80d8
tests: disable ARM unwinding tests if ARM is unavailable

Appease the buildbots for targets which do not build the ARM support by moving
the ARM specific test into a subdirectory and use the lit configuration to
disable them appropriately.

Thanks to chapuni and thakis for explaining how to do this!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198736 91177308-0d34-0410-b5e6-96231b3b80d8
Re-apply r196639: Add support for archives and object file caching under MCJIT.

I believe the bot failures on linux systems were due to overestimating the
alignment of object-files within archives, which are only guaranteed to be
two-byte aligned. I have reduced the alignment in
RuntimeDyldELF::createObjectImageFromFile accordingly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198737 91177308-0d34-0410-b5e6-96231b3b80d8
[Sparc] Add support for parsing branch instructions and conditional moves.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198738 91177308-0d34-0410-b5e6-96231b3b80d8
[Sparc] Correct the mask for fixup_sparc_br19.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198739 91177308-0d34-0410-b5e6-96231b3b80d8
[SparcV9] Rename operands in some sparc64 instructions so that TableGen can encode them correctly. 


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198740 91177308-0d34-0410-b5e6-96231b3b80d8
[AArch64 NEON] Fix generating incorrect value type of NEON_VDUPLANE
when lower build_vector if result value type mismatch with operand
value type.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198743 91177308-0d34-0410-b5e6-96231b3b80d8
[patch] Adjust behavior of FDE cross-section relocs for targets that don't support abs-differences.

Modern versions of OSX/Darwin's ld (ld64 > 97.17) have an optimisation present that allows the back end to omit relocations (and replace them with an absolute difference) for FDE some text section refs.

This patch allows a backend to opt-in to this behaviour by setting "DwarfFDESymbolsUseAbsDiff".  At present, this is only enabled for modern x86 OSX ports.

test changes by David Fang.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198744 91177308-0d34-0410-b5e6-96231b3b80d8
AVX-512: Added more intrinsics for pmin/pmax, pabs, blend, pmuldq.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198745 91177308-0d34-0410-b5e6-96231b3b80d8
CMake: Provide LLVM_PLUGIN_EXT definition

This is needed to support the addition of tests for clang loadable plugins.

In clang, plugins are built as modules (bundles on OS X) rather than dynamic
libraries (dylib) so the build system needs to inform lit of the actual
file extension in use, typically '.so' on Unix and '.dll' on Windows.

(LLVM itself should probably switch to this scheme to fix PR14903 once and for
all.)

No change in build output or functionality intended.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198746 91177308-0d34-0410-b5e6-96231b3b80d8
Use -std=gnu99 in tools/llvm-c-test/CMakeLists.txt

With a current mingw (gcc 4.8.1) it looks like we hit some variation of

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40278

The end result is that off_t is not defined and the build fails without this
patch.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198749 91177308-0d34-0410-b5e6-96231b3b80d8