Silence warning: variable 'buffer' set but not used.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223389 91177308-0d34-0410-b5e6-96231b3b80d8
Add a FIXME as requested by Renato Golin.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223390 91177308-0d34-0410-b5e6-96231b3b80d8
Also use --icf=safe if we are being linked by gold.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223394 91177308-0d34-0410-b5e6-96231b3b80d8
Add some tests for SimplifyCFG's ConstantFoldTerminator(). NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223395 91177308-0d34-0410-b5e6-96231b3b80d8
Add some tests for SimplifyCFG's TurnSwitchRangeIntoICmp(). NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223396 91177308-0d34-0410-b5e6-96231b3b80d8