Kristof Beyls 320fd3314e [ARM] Implement harden-sls-retbr for Thumb mode ...

The only non-trivial consideration in this patch is that the formation
of TBB/TBH instructions, which is done in the constant island pass, does
not understand the speculation barriers inserted by the SLSHardening
pass. As such, when harden-sls-retbr is enabled for a function, the
formation of TBB/TBH instructions in the constant island pass is
disabled.

Differential Revision: https://reviews.llvm.org/D92396

2020-12-19 12:32:47 +00:00

92 KiB

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