[llvm-bugs] [Bug 48400] New: [NewPM] Memory usage regression

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=48400

            Bug ID: 48400
           Summary: [NewPM] Memory usage regression
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Core LLVM classes
          Assignee: unassignedbugs at nondot.org
          Reporter: nikita.ppv at gmail.com
                CC: llvm-bugs at lists.llvm.org

While the NewPM seems to improve compile-time (on average), it can also
significantly regress memory usage:
https://llvm-compile-time-tracker.com/compare.php?from=ec13b391170e5984894e1c8635a6964e79572205&to=29c614c923e05cd3015cbd8bceeadf427cd4b6d9&stat=max-rss

The 30% regression on tramp3d-v4 especially seems notable.

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