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[Bug tree-optimization/53726] [4.8 Regression] aes test performance drop for eembc_2_0_peak_32
- From: "vbyakovl23 at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 20 Jun 2012 10:48:11 +0000
- Subject: [Bug tree-optimization/53726] [4.8 Regression] aes test performance drop for eembc_2_0_peak_32
- Auto-submitted: auto-generated
- References: <bug-53726-4@http.gcc.gnu.org/bugzilla/>
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