Conservatively handle multiple MMOs in MIsNeedChainEdge

MIsNeedChainEdge, which is used by -enable-aa-sched-mi (AA in misched), had an
llvm_unreachable when -enable-aa-sched-mi is enabled and we reach an
instruction with multiple MMOs. Instead, return a conservative answer. This
allows testing -enable-aa-sched-mi on x86.

Also, this moves the check above the isUnsafeMemoryObject checks.
isUnsafeMemoryObject is currently correct only for instructions with one MMO
(as noted in the comment in isUnsafeMemoryObject):

  // We purposefully do no check for hasOneMemOperand() here
  // in hope to trigger an assert downstream in order to
  // finish implementation.

The problem with this is that, had the candidate edge passed the
"!MIa->mayStore() && !MIb->mayStore()" check, the hoped-for assert would never
happen (which could, in theory, lead to incorrect behavior if one of these
secondary MMOs was volatile, for example).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198795 91177308-0d34-0410-b5e6-96231b3b80d8
Remove vestigal bits of MC from the mangler. It no longer uses this, and
having the include could cause weird layering problems between the IR
and MC libraries.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198796 91177308-0d34-0410-b5e6-96231b3b80d8
Use getError and remove the error_code operator.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198799 91177308-0d34-0410-b5e6-96231b3b80d8
Fix the C++03 build.

With c++11 we never instantiate the copy constructor.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198803 91177308-0d34-0410-b5e6-96231b3b80d8
llvm-dwarfdump: reorder dwo sections to immediately proceed their non-dwo equivalents

This makes it easier to write a test that's mostly shared between
fission and non-fission (using FileCheck's multiple prefix support).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198806 91177308-0d34-0410-b5e6-96231b3b80d8
Simplify/collapse/denest a conditions/blocks.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198813 91177308-0d34-0410-b5e6-96231b3b80d8
llvm.experimental.stackmap: fix encoding of large constants.

In the stackmap format we advertise the constant field as signed.
However, we were determining whether to promote to a 64-bit constant
pool based on an unsigned comparison.

This fix allows -1 to be encoded as a small constant.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198816 91177308-0d34-0410-b5e6-96231b3b80d8
Use the existing typedef to avoid forming a reference to a reference.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198817 91177308-0d34-0410-b5e6-96231b3b80d8
Remove dead code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198819 91177308-0d34-0410-b5e6-96231b3b80d8
Replace fstream use with raw_fd_ostream.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198821 91177308-0d34-0410-b5e6-96231b3b80d8
Remove the test for endianness in configure.ac and regenerate.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198825 91177308-0d34-0410-b5e6-96231b3b80d8
DwarfUnit: Move the DICompileUnit Node to the DwarfCompileUnit only

It's unused in DwarfTypeUnit, as is expected.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198830 91177308-0d34-0410-b5e6-96231b3b80d8
Put the functionality for printing a value to a raw_ostream as an
operand into the Value interface just like the core print method is.
That gives a more conistent organization to the IR printing interfaces
-- they are all attached to the IR objects themselves. Also, update all
the users.

This removes the 'Writer.h' header which contained only a single function
declaration.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198836 91177308-0d34-0410-b5e6-96231b3b80d8
[PM] Rename this source file to something a bit more generic before
I add support for the new pass manager to it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198838 91177308-0d34-0410-b5e6-96231b3b80d8
Revert "DwarfUnit: Move the DICompileUnit Node to the DwarfCompileUnit only"

This reverts commit r198830.

Decided to go a different way with this...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198841 91177308-0d34-0410-b5e6-96231b3b80d8
DwarfUnit: Rename "Node" to "CUNode" and propagate it through DwarfTypeUnit as well.

Since we'll now also need the split dwarf file name along with the
language in DwarfTypeUnits, just use the whole DICompileUnit rather than
explicitly handling each field needed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198842 91177308-0d34-0410-b5e6-96231b3b80d8
Reformatting for r198842

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198843 91177308-0d34-0410-b5e6-96231b3b80d8
Extend llvm::AlignedCharArrayUnion to support up to 10 arguments, as required by Clang's APValue.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198844 91177308-0d34-0410-b5e6-96231b3b80d8
DwarfDebug: Refactor out common skeleton construction code to be reused for type unit skeletons.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198846 91177308-0d34-0410-b5e6-96231b3b80d8
llvm-readobj: fix endianness

Explicitly handle endianness to ensure that bytes are read properly on
big-endian systems.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198847 91177308-0d34-0410-b5e6-96231b3b80d8