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90d0ed297f
Use the options in the ARMISelLowering to control whether tail calls are optimised or not. Previously, this option was entirely ignored on the ARM target and only honoured on x86. This option is mostly useful in profiling scenarios. The default remains that tail call optimisations will be applied. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203577 91177308-0d34-0410-b5e6-96231b3b80d8