range-for some loops in DAE

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219167 91177308-0d34-0410-b5e6-96231b3b80d8
Recognize aarch64_be as valid architecture.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219168 91177308-0d34-0410-b5e6-96231b3b80d8
Support: Add a utility to remap std{in,out,err} to /dev/null if closed

It's possible to start a program with one (or all) of the standard file
descriptors closed.  Subsequent open system calls will give the program
a low-numbered file descriptor.

This is problematic because we may believe we are writing to standard
out instead of a file.

Introduce Process::FixupStandardFileDescriptors, a helper function to
remap standard file descriptors to /dev/null if they were closed before
the program started.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219170 91177308-0d34-0410-b5e6-96231b3b80d8
llvm/test/lit.cfg: Suppress dwarf stuff for targeting x86_64-mingw32 while investigating since r219108.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219171 91177308-0d34-0410-b5e6-96231b3b80d8
ARMInstPrinter.cpp: Suppress a warning for -Asserts. [-Wunused-variable]

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219172 91177308-0d34-0410-b5e6-96231b3b80d8