[Bug rtl-optimization/33928] [4.3/4.4 Regression] 30% performance slowdown in floating-point code caused by r118475

[lucier at math dot purdue dot edu]

------- Comment #102 from lucier at math dot purdue dot edu  2009-06-15 19:57 -------
Subject: Re:  [4.3/4.4/4.5 Regression] 30%
 performance slowdown in floating-point code caused by  r118475

On Mon, 2009-06-15 at 16:20 +0000, paolo dot bonzini at gmail dot com
wrote:

> Yes, and the output of -ftime-report is not needed.  Just the "time 
> ./cc1 ..." output for the two.  Thanks!

The two commands:

time /pkgs/gcc-mainline/bin/gcc -O1 -fno-math-errno -fschedule-insns2
-fno-trapping-math -fno-strict-aliasing -fwrapv -fomit-frame-pointer -fPIC
-fno-common -mieee-fp -c compiler.i 
261.424u 1.184s 4:22.76 99.9%   0+0k 0+28456io 0pf+0w
time /pkgs/gcc-mainline/bin/gcc -O1 -fno-math-errno -fschedule-insns2
-fno-trapping-math -fno-strict-aliasing -fwrapv -fomit-frame-pointer -fPIC
-fno-common -mieee-fp -c compiler.i -ftime-report 
263.424u 4.900s 4:28.68 99.8%   0+0k 0+28480io 0pf+0w


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33928