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97f8f69a7f
Weak externals are resolved statically, so we can actually generate the tail call on PE/COFF targets without breaking the requirements. It is questionable whether we want to propagate the current behaviour for MachO as the requirements are part of the ARM ELF specifications, and it seems that prior to the SVN r215890, we would have tail'ed the call. For now, be conservative and only permit it on PE/COFF where the call will always be fully resolved. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225119 91177308-0d34-0410-b5e6-96231b3b80d8
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