[llvm-bugs] [Bug 44823] New: Clang memory usage is massive when invoking multiple TUs

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=44823

            Bug ID: 44823
           Summary: Clang memory usage is massive when invoking multiple
                    TUs
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Driver
          Assignee: unassignedclangbugs at nondot.org
          Reporter: erich.keane at intel.com
                CC: llvm-bugs at lists.llvm.org, neeilans at live.com,
                    richard-llvm at metafoo.co.uk

After this patch: https://reviews.llvm.org/D69825

multiple TUs cause really high memory usage. This is because each invocation of
the CC1Command isn't cleaning up after itself thanks to -disable-free. I
believe that in cases where there will be more than 1 CC1 invocation we need to
disable the driver's addition of the disable-free flag for all but the last CC1
invocation.

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