[Bug binutils/13897] New: objdump (ppc64) performance has severely degraded in the binutils 2.22.52_0322

[johnhrusso at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=13897

             Bug #: 13897
           Summary: objdump (ppc64) performance has severely degraded in
                    the binutils 2.22.52_0322
           Product: binutils
           Version: 2.22
            Status: NEW
          Severity: normal
          Priority: P2
         Component: binutils
        AssignedTo: address@hidden
        ReportedBy: address@hidden
    Classification: Unclassified


Created attachment 6300
  --> http://sourceware.org/bugzilla/attachment.cgi?id=6300
tarball containing ELF file I used to test.

We're disassembling the attached file with:

./objdump -d -S -x mtwx53252-core0.elf > out

With binutils 2.22.51, this disassembly happens in

real    0m6.501s
user    0m6.475s
sys    0m0.018s

With binutils 2.22.52 0322 snaphsot, I get:

real    12m23.685s
user    9m0.350s
sys    3m19.035s

12 minutes now vs. 6 seconds previously.

The -S flag is key, performance is fine if -S is excluded from the command.

target:
mtwx53252-core0.elf: ELF 64-bit MSB executable, 64-bit PowerPC or cisco 7500,
version 1 (SYSV), statically linked, not stripped

host:
./objdump -v
GNU objdump (GNU Binutils) 2.22.52.20120322

uname -a
Linux  2.6.35.6-45.fc14.x86_64 #1 SMP Mon Oct 18 23:57:44 UTC 2010 x86_64
x86_64 x86_64 GNU/Linux

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