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x86 bootstrap fix
- To: gcc-patches at gcc dot gnu dot org
- Subject: x86 bootstrap fix
- From: Jeffrey A Law <law at cygnus dot com>
- Date: Fri, 14 Jan 2000 04:22:08 -0700
- Reply-To: law at cygnus dot com
I bootstrapped my flow changes on the PA, not the x86 :-)
reg-stacking uses insert_insn_on_edge, but does not maintain the
basic_block_for_insn structures. So a NULL basic_block_for_insn
is expected. The obvious fix is to verify it is non-NULL before
calling set_block_for_insn.
* flow.c (split_edge): Do not call set_block_for_insn if we
do not have a basic_block_for_insn structure.
Index: flow.c
===================================================================
RCS file: /cvs/gcc/egcs/gcc/flow.c,v
retrieving revision 1.203
diff -c -3 -p -r1.203 flow.c
*** flow.c 2000/01/13 05:41:44 1.203
--- flow.c 2000/01/14 11:17:39
*************** split_edge (edge_in)
*** 1387,1393 ****
pos = emit_jump_insn_after (gen_jump (old_succ->head),
jump_block->end);
jump_block->end = pos;
! set_block_for_insn (pos, jump_block);
emit_barrier_after (pos);
/* ... let jump know that label is in use, ... */
--- 1387,1394 ----
pos = emit_jump_insn_after (gen_jump (old_succ->head),
jump_block->end);
jump_block->end = pos;
! if (basic_block_for_insn)
! set_block_for_insn (pos, jump_block);
emit_barrier_after (pos);
/* ... let jump know that label is in use, ... */