James Y Knight 4ddf140c00 Fix PR35902: incorrect alignment used for ubsan check. ...

UBSan was using the complete-object align rather than nv alignment
when checking the "this" pointer of a method.

Furthermore, CGF.CXXABIThisAlignment was also being set incorrectly,
due to an incorrectly negated test. The latter doesn't appear to have
had any impact, due to it not really being used anywhere.

Differential Revision: https://reviews.llvm.org/D93072

2020-12-28 18:11:17 -05:00

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