[LLVMbugs] [Bug 13586] New: Bytemark HUFFMAN 7% slower than gcc

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Sun Aug 12 03:07:31 PDT 2012


             Bug #: 13586
           Summary: Bytemark HUFFMAN 7% slower than gcc
           Product: clang
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: -New Bugs
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: wbrana at gmail.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified


clang trunk
HUFFMAN             :          3242.8  :      89.92  :      28.72
gcc 4.7.2 pre
HUFFMAN             :          3474.4  :      96.35  :      30.77

CFLAGS = -ggdb -Wall -O3 -funroll-loops -g0 -march=core2 -fomit-frame-pointer
-ffast-math -mssse3 -fno-PIE -fno-exceptions -fno-stack-protector -static

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