[llvm-commits] [patch] Fix PR5094: -fstack-protector fails to link on Linux/x86

[Nelson Elhage]

This patch adds a hook to TargetLowering to indicate whether the stack protector
cookie is stored in a non-standard place.

Code-diving glibc, it appears that in general it stores the stack cookie off of
the TCB header. I'm not sure if there's a more generic solution than the
address-space/offset approach in this patch for accessing the TCB header in the
generated IR.

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