Splitstack implementation for android
Fix regiser states
Implement the fixed stack segment attribute
simplifycfg: Fix integer overflow converting switch into icmp.

If a switch instruction has a case for every possible value of its type,
with the same successor, SimplifyCFG would replace it with an icmp ult,
but the computation of the bound overflows in that case, which inverts
the test.

Patch by Jed Davis!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179587 91177308-0d34-0410-b5e6-96231b3b80d8
Merge branch 'rust-current-llvm'

Pulled changes from Rust's LLVM fork.

Conflicts:
	include/llvm/IR/Attributes.h
	include/llvm/Target/TargetOptions.h
	lib/AsmParser/LLParser.cpp
	lib/AsmParser/LLToken.h
	lib/IR/Attributes.cpp
	lib/Target/AArch64/AArch64Subtarget.h
	lib/Target/ARM/ARMFrameLowering.cpp
	lib/Target/ARM/ARMFrameLowering.h
	lib/Target/ARM/ARMMachineFunctionInfo.h
	lib/Target/ARM/ARMSubtarget.h
	lib/Target/ARM/ARMTargetMachine.cpp
	lib/Target/ARM/ARMTargetMachine.h
	lib/Target/ARM/Thumb1FrameLowering.h
	lib/Target/X86/X86FrameLowering.cpp
	test/Transforms/SimplifyCFG/switch-to-icmp.ll
Merge branch 'master' into avr-support