Tom Weaver 453dc4d7ec [OPT-DBG] Teach DbgEntityHistoryCalculator about meta-instructions. ...

The calculator was considering instructions such as KILLs as clobbers
of a physical address. This is wrong as meta instructions such as KILLs
produce no output in the final program and thus don't clobber or change
any physical location's value. As a result they're safe to ignore whilst
calculating location list ranges.

reviewers: aprantl, vsk

diff revision: https://reviews.llvm.org/D70497

fixes: https://bugs.llvm.org/show_bug.cgi?id=38753

2019-12-20 14:03:34 +00:00

15 KiB

Raw Blame History

View Raw