------- Comment #5 from ramana dot r at gmail dot com 2009-02-03 22:06 ------- (In reply to comment #4)
> Looking at the dumps this rtx is generated by the rename registers pass in > 4.3.x . In trunk however rename register does not generate this rtx and hence > there is no problem. It could still be latent but one has to dig deeper. A quick comparison of trunk and gcc 4.3 branch shows the following patch being applied in trunk vs. the 4.3 branch. http://gcc.gnu.org/ml/gcc-patches/2008-04/msg01577.html A quick check with the patch at ram...@numenor:~/cos/mycos/gcc/gcc$ svn diff -r137128:137235 regrename.c Index: regrename.c =================================================================== --- regrename.c (revision 137128) +++ regrename.c (revision 137235) @@ -812,7 +812,7 @@ OP_IN, 0); for (i = 0; i < recog_data.n_dups; i++) - *recog_data.dup_loc[i] = copy_rtx (old_dups[i]); + *recog_data.dup_loc[i] = old_dups[i]; for (i = 0; i < n_ops; i++) *recog_data.operand_loc[i] = old_operands[i]; if (recog_data.n_dups) -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39076
