[Bug target/32086] [4.3 Regression] 10% to 20% Performance Regression Between 4.1.3 and 4.3

[ubizjak at gmail dot com]

------- Comment #7 from ubizjak at gmail dot com  2007-11-30 13:20 -------
This is with latest SVN:

   Benchmark
        Name     387       387c      sse       ssec
   ---------   -------   -------   -------   -------
          ac     16.57     16.57     22.66     22.65
      aermod     55.85     54.72     50.23     51.08
         air     14.95     15.02     15.92     15.94
    capacita     78.60     78.55     81.89     81.95
     channel      9.90      9.78      9.90      9.65
       doduc     59.82     59.65     67.81     68.97
     fatigue     20.06     18.27     21.65     21.27
     gas_dyn     11.47     11.35     10.62     10.68
      induct     60.60     50.92     73.82     58.74
       linpk     27.26     27.20     28.24     28.17
        mdbx     30.41     30.36     33.33     33.23
          nf     33.63     33.69     31.97     32.03
     protein     73.16     72.87     72.67     72.76
      rnflow     57.18     57.18     42.19     42.46
    test_fpu     20.71     20.86     21.61     21.54
        tfft      4.86      5.10      4.92      5.11

                 27.48     27.03     28.26     27.93

gcc version 4.3.0 20071130 (experimental) [trunk revision 130533] (GCC)

Family: 15 Model: 4 Stepping: 10 Type: 0 Brand: 0
CPU Model: Pentium 4 D (Foster) Original OEM
Processor name string: Intel(R) Xeon(TM) CPU 3.60GHz

Compile Command :
-march=opteron -ffast-math -funroll-loops -ftree-loop-linear -msse3 -O3

387 : -mfpmath=387
387c: -mfpmath=387 -fvec-cost-model
sse : -mfpmath=sse
ssec: -mfpmath=sse -fvec-cost-model


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32086