With the following patch, both testcases for tree if conversion
(gcc.dg/tree-ssa/ifc-20040816-1.c and gcc.dg/tree-ssa/ifc-20040816-2.c)
ICE, because they produce wrong ssa.
I was unable to prepare a testcase for clean branch, however the patch
obviously should not cause any problems.
Index: tree-optimize.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/tree-optimize.c,v
retrieving revision 2.65
diff -c -3 -p -r2.65 tree-optimize.c
*** tree-optimize.c 30 Nov 2004 15:38:33 -0000 2.65
--- tree-optimize.c 15 Dec 2004 01:01:15 -0000
*************** init_tree_optimization_passes (void)
*** 378,383 ****
--- 378,385 ----
NEXT_PASS (pass_may_alias);
NEXT_PASS (pass_split_crit_edges);
NEXT_PASS (pass_pre);
+ NEXT_PASS (pass_dominator);
+ NEXT_PASS (pass_dce);
NEXT_PASS (pass_loop);
NEXT_PASS (pass_dominator);
NEXT_PASS (pass_redundant_phi);
--
Summary: ICE in tree-if-conv
Product: gcc
Version: 4.0.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P2
Component: tree-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: rakdver at gcc dot gnu dot org
CC: dpatel at apple dot com,gcc-bugs at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19067
