MCSchedule.h: fix VS2012 build after r216919

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216924 91177308-0d34-0410-b5e6-96231b3b80d8
unique_ptrify the result of SpecialCaseList::create

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216925 91177308-0d34-0410-b5e6-96231b3b80d8
unique_ptrify LTOCodeGenerator::NativeObjectFile

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216927 91177308-0d34-0410-b5e6-96231b3b80d8
Fix comment and unnecessary check for FP build_vectors.

This was copy-paste from the integer version, but
FP build_vectors don't truncate.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216928 91177308-0d34-0410-b5e6-96231b3b80d8
CodeGen: Handle va_start in the entry block

Also fix a small copy-paste bug in X86ISelLowering where Chain should
have been used in place of DAG.getEntryToken().

Fixes PR20828.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216929 91177308-0d34-0410-b5e6-96231b3b80d8
Fix crash when looking up the addrspace of GEPs with vector types

Patch by Björn Steinbrink

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216930 91177308-0d34-0410-b5e6-96231b3b80d8
Code review tweaks

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216931 91177308-0d34-0410-b5e6-96231b3b80d8