[Bug tree-optimization/53726] [4.8 Regression] aes test performance drop for eembc_2_0_peak_32

vbyakovl23 at gmail dot com gcc-bugzilla@gcc.gnu.org
Wed Jun 20 10:48:00 GMT 2012


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53726

--- Comment #3 from Vladimir Yakovlev <vbyakovl23 at gmail dot com> 2012-06-20 10:48:11 UTC ---
I added executable testcase. Command line to compile

gcc -g -ansi -O3 -ffast-math -msse2 -mfpmath=sse -m32 -static  -march=corei7
-mtune=corei7   test.c m.c

Run results

Wed Jun 20 14:39:05: /gnumnt/msticlxl25_users/vbyakovl/1020/test$ time
./test.corei7.bad.exe                                                           

real    0m6.317s
user    0m6.290s
sys     0m0.002s
Wed Jun 20 14:39:24: /gnumnt/msticlxl25_users/vbyakovl/1020/test$ time
./test.corei7.good.exe                                                          

real    0m4.815s
user    0m4.713s
sys     0m0.000s



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