------- Comment #6 from hp at gcc dot gnu dot org 2008-10-25 21:20 ------- Created an attachment (id=16546) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=16546&action=view) As 4.3.3 above but with -fno-tree-reassoc
As attachment id=16544, but adding -fno-tree-reassoc. Note that it now "only" uses 6 of the 9 available call-saved registers, still quite a regression since 3.2.1 (three registers). FWIW, I don't think only using call-clobbered registers (5 plus 2 special registers suitable only for moves) should be unpossible for this code. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37916
