[Bug rtl-optimization/26493] -freorder-blocks-and-partition is a dud without generated profiling data

mkgnu at mkgnu dot net gcc-bugzilla@gcc.gnu.org
Mon Apr 30 22:42:00 GMT 2007



------- Comment #6 from mkgnu at mkgnu dot net  2007-04-30 23:42 -------
It seems that when I use -freorder-blocks-and-partition along with
-fprofile-use (after I have already run once an executable compiled with
-freorder-blocks-and-partition -fprofile-generate) I can produce an object file
that contains a .text.unlikely section, as expected.

But when I try to further link this object file with other object files to
produce an executable, the .text.unlikely section is missing from the final
executable. I've tried this with gcc4.1.2/ld2.15 and then again with
gcc4.1.1/ld2.17 with the same results.

Is this another bug related to -freorder-blocks-and-partition ? Should I file a
separate bug report for it ?


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26493



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