[x86] Start fixing our emission of ADDSUBPS and ADDSUBPD instructions by
introducing a synthetic X86 ISD node representing this generic
operation.

The relevant patterns for mapping these nodes into the concrete
instructions are also added, and a gnarly bit of C++ code in the
target-specific DAG combiner is replaced with simple code emitting this
primitive.

The next step is to generically combine blends of adds and subs into
this node so that we can drop the reliance on an SSE4.1 ISD node
(BLENDI) when matching an SSE3 feature (ADDSUB).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217819 91177308-0d34-0410-b5e6-96231b3b80d8
Fix the build for MSVC, it doesn't support extended sizeof

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217820 91177308-0d34-0410-b5e6-96231b3b80d8
Add mips32 r1 to the list of supported targets for Mips fast-isel

Summary:
Expand list of supported targets for Mips to include mips32 r1.
Previously it only include r2. More patches are coming where there is 
a difference but in the current patches as pushed upstream, r1 and r2
are equivalent.

Test Plan:
simplestorefp1.ll

add new build bots at mips to test this flavor at both -O0 and -O2

Reviewers: dsanders

Reviewed By: dsanders

Differential Revision: http://reviews.llvm.org/D5306

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217821 91177308-0d34-0410-b5e6-96231b3b80d8
[FastISel] Move optimizeCmpPredicate to FastISel base class. NFC.

Make the optimizeCmpPredicate function available to all targets.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217822 91177308-0d34-0410-b5e6-96231b3b80d8
[FastISel][AArch64] Improve floating-point compare support.

Add support for the last two missing fcmp condition codes: UEQ and ONE.

This fixes rdar://problem/18341575.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217823 91177308-0d34-0410-b5e6-96231b3b80d8
Remove dead code in SimplifyCFG

Summary: UsedByBranch is always true according to how BonusInst is defined.

Test Plan:
Passes check-all, and also verified 

if (BonusInst && !UsedByBranch) {
  ...
}

is never entered during check-all.

Reviewers: resistor, nadav, jingyue

Reviewed By: jingyue

Subscribers: llvm-commits, eliben, meheff

Differential Revision: http://reviews.llvm.org/D5324

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217824 91177308-0d34-0410-b5e6-96231b3b80d8