[X86][AVX] 256-bit vector stack unaligned load/stores identification

Under many circumstances the stack is not 32-byte aligned, resulting in the use of the vmovups/vmovupd/vmovdqu instructions when inserting ymm reloads/spills.

This minor patch adds these instructions to the isFrameLoadOpcode/isFrameStoreOpcode helpers so that they can be correctly identified and not be treated as folded reloads/spills.

This has also been noticed by http://llvm.org/bugs/show_bug.cgi?id=18846 where it was causing redundant spills - I've added a reduced test case at test/CodeGen/X86/pr18846.ll

Differential Revision: http://reviews.llvm.org/D6252



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222281 91177308-0d34-0410-b5e6-96231b3b80d8
R600/SI: Set hasSideEffects = 0 on load and store instructions.

Assuming unmodeled side effects interferes with some scheduling
opportunities.

Don't put it in the base class of DS instructions since there
are a few weird effecting, non load/store instructions there.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222285 91177308-0d34-0410-b5e6-96231b3b80d8
R600/SI: Implement areMemAccessesTriviallyDisjoint

This partially makes up for not having address spaces
used for alias analysis in some simple cases.

This is not yet enabled by default so shouldn't change anything yet.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222286 91177308-0d34-0410-b5e6-96231b3b80d8
Revert r222039 because of bot failure.

http://lab.llvm.org:8080/green/job/clang-Rlto_master/298/
Hopefully, bot will be green. If not, we will re-submit the commit.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222287 91177308-0d34-0410-b5e6-96231b3b80d8
Introduce llvm::SplitAllCriticalEdges

Summary:
move the code from BreakCriticalEdges::runOnFunction()
into a separate utility function llvm::SplitAllCriticalEdges()
so that it can be used independently.
No functionality change intended.

Test Plan: check-llvm

Reviewers: nlewycky

Reviewed By: nlewycky

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D6313

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222288 91177308-0d34-0410-b5e6-96231b3b80d8
llvm-readobj: teach it how to dump COFF base relocation table


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222289 91177308-0d34-0410-b5e6-96231b3b80d8
[asan] add experimental basic-block tracing to asan-coverage; also fix -fsanitize-coverage=3 which was broken by r221718

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222290 91177308-0d34-0410-b5e6-96231b3b80d8