[llvm-bugs] [Bug 27415] New: Evaluate X86TargetLowering::MaxStoresPerMemcpyOptSize

via llvm-bugs llvm-bugs at lists.llvm.org
Mon Apr 18 15:15:16 PDT 2016


https://llvm.org/bugs/show_bug.cgi?id=27415

            Bug ID: 27415
           Summary: Evaluate X86TargetLowering::MaxStoresPerMemcpyOptSize
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Backend: X86
          Assignee: unassignedbugs at nondot.org
          Reporter: hans at chromium.org
                CC: llvm-bugs at lists.llvm.org
            Blocks: 26299
    Classification: Unclassified

r265836, which causes more memcpys to be expanded, grew chrome_child.dll by 240
KB.

I suspect that maybe X86TargetLowering::MaxStoresPerMemcpyOptSize should be
reduced, at least on 32-bit where we lower calls with smaller code than we used
to.

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