Kristof Beyls df8ed39283 [ARM] harden-sls-blr: avoid r12 and lr in indirect calls. ...

As a linker is allowed to clobber r12 on function calls, the code
transformation that hardens indirect calls is not correct in case a
linker does so.  Similarly, the transformation is not correct when
register lr is used.

This patch makes sure that r12 or lr are not used for indirect calls
when harden-sls-blr is enabled.

Differential Revision: https://reviews.llvm.org/D92469

2020-12-19 12:39:59 +00:00

2.5 KiB

Raw Blame History

View Raw