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...ered to ISD::GlobalTLSAddress, which is currently used by both x86 and ppc, and ultimately it's referencing fs register on x86_64 and r13 on ppc64le. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20160223/6fb9314a/attachment.html>

When -fstack-protector is turned on, linker fails to find the symbol "__stack_chk_guard" because at least for powerpc64le, glibc doesn't provide this symbol. Instead, they put the stack guard into TCB. x86 fixed this issue by injecting a special address space (which is later translated to TCB register access) and hard code the offset of stack_guard, but I don't see a easy way to