[Bug rtl-optimization/60757] combine uses exponential time in nonzero_bits1 recursion

2014-04-04 Thread rguenth at gcc dot gnu.org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60757 --- Comment #2 from Richard Biener rguenth at gcc dot gnu.org --- Can you point to the recursion please?

[Bug rtl-optimization/60757] combine uses exponential time in nonzero_bits1 recursion

2014-04-04 Thread amylaar at gcc dot gnu.org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60757 --- Comment #3 from Jorn Wolfgang Rennecke amylaar at gcc dot gnu.org --- Created attachment 32544 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=32544action=edit typescript with backtrace It appears that some other epiphany patches I had in

[Bug rtl-optimization/60757] combine uses exponential time in nonzero_bits1 recursion

2014-04-04 Thread amylaar at gcc dot gnu.org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60757 --- Comment #4 from Jorn Wolfgang Rennecke amylaar at gcc dot gnu.org --- (In reply to Jorn Wolfgang Rennecke from comment #3) Created attachment 32544 [details] typescript with backtrace It appears that some other epiphany patches I had in

[Bug rtl-optimization/60757] combine uses exponential time in nonzero_bits1 recursion

2014-04-03 Thread amylaar at gcc dot gnu.org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60757 --- Comment #1 from Jorn Wolfgang Rennecke amylaar at gcc dot gnu.org --- Created attachment 32541 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=32541action=edit epiphany cost fix that triggers combine exponential behaviour