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Commit ad4313fc authored by Scott Constable's avatar Scott Constable Committed by Craig Topper
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[X86] Fix bug in -mlvi-cfi that may clobber a live register 

Fix for this bug: https://bugs.llvm.org/show_bug.cgi?id=47740

The fix uses the existing findDeadCallerSavedReg() function instead of a hacky heuristic to find a scratch register to clobber.

Differential Revision: https://reviews.llvm.org/D88925
parent dc3dba7d
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