[driver] If no -miphoneos-version-min is specified on the command line *and*
IPHONEOS_DEPLOYMENT_TARGET if undefined, set -miphoneos-version-min based on 
isysroot.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@138892 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed