[LLVMbugs] [Bug 8664] New: code size regression over time

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Mon Nov 22 10:39:27 PST 2010


           Summary: code size regression over time
           Product: clang
           Version: unspecified
          Platform: PC
        OS/Version: FreeBSD
            Status: NEW
          Severity: normal
          Priority: P
         Component: -New Bugs
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: rdivacky at freebsd.org
                CC: llvmbugs at cs.uiuc.edu

I've been doing some code-size testing over time (quite frequently in 2009 and
much less frequenly in 2010) and it looks like code size of llvm compiled
(using clang) code is regressing (tested on gnu screen)

see:   http://lev.vlakno.cz/~rdivacky/clang.sizes.txt

I propose to

1) start checking code size of some given test base (gnu screen worked ok for
me), having data available to check for regressions

2) investigate some bigger jumps in the data provided (you can skip the start
of the list - that was produced back when ccc (the old driver) ignored -O2)

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