[llvm-bugs] [Bug 49267] New: Cherry-pick willreturn DCE fixes to 12.0.0

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=49267

            Bug ID: 49267
           Summary: Cherry-pick willreturn DCE fixes to 12.0.0
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Scalar Optimizations
          Assignee: unassignedbugs at nondot.org
          Reporter: nikita.ppv at gmail.com
                CC: llvm-bugs at lists.llvm.org
            Blocks: 48902

Please cherry-pick the following patches fixing incorrect DCE of non-willreturn
calls to the release branch:

https://github.com/llvm/llvm-project/commit/4045ad6b0ccd35fe990d51b9bfdd9e7de109bdf5
(tests)
https://github.com/llvm/llvm-project/commit/370addb996138a9e3634899cf264c7621307617a
(refactoring)
https://github.com/llvm/llvm-project/commit/2f17ed294fcd8cde505b93c9c5bbab06ba59051c
(actual fix)
https://github.com/llvm/llvm-project/commit/ac065b7a37d6dd8daacd526f6c3a0d1563bc88ac
(LLD test fixup)

If necessary, I can also come up with a variant of the patch that doesn't need
the refactoring commit.


Referenced Bugs:

https://bugs.llvm.org/show_bug.cgi?id=48902
[Bug 48902] [meta] 12.0.0 Release Blockers
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