------- Comment #20 from bernds at gcc dot gnu dot org 2009-12-10 18:03 ------- Subject: Bug 42216
Author: bernds Date: Thu Dec 10 18:03:05 2009 New Revision: 155134 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=155134 Log: PR rtl-opt/42216 * regrename.c: Error out if MAX_RECOG_OPERANDS is larger than HOST_BITS_PER_WIDE_INT. (verify_reg_in_set): New function, broken out of verify_reg_tracked. (verify_reg_tracked): Use it. (scan_rtx_reg): When seeing a use involving a superset of the registers in an existing chain, enlarge that chain. Otherwise, allow subsets and set fail_current_block for all other kinds of overlap. (hide_operands): New argument UNTRACKED_OPERANDS; callers changed. Do not modify operands when the bit with the corresponding number is set in that bitmap. (build_def_use): When we see matching operands with different modes, don't set fail_current_block, but keep track of such operands in a bitmap if their registers aren't already tracked in an open chain. Pass this bitmap to all hide_operands calls. Modified: trunk/gcc/ChangeLog trunk/gcc/regrename.c -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42216
