gcc.c-torture/execute/built-in-setjmp.c fails at -O2 with the ICE:
built-in-setjmp.c:39: error: call edges for non-call insn in bb 6
built-in-setjmp.c:39: error: in basic block 6:
built-in-setjmp.c:39: error: flow control insn inside a basic block
(call_insn/u:HI 58 147 172 6 (parallel [
(set (reg:SI 2 r2)
(call (mem:DI (reg/f:SI 128 tr0 [188]) [0 S8 A64])
(const_int 0 [0x0])))
(clobber (reg:DI 18 r18))
]) 236 {call_value_media} (nil)
(expr_list:REG_DEAD (reg:SI 3 r3)
(expr_list:REG_DEAD (reg/f:SI 128 tr0 [188])
(expr_list:REG_UNUSED (reg:DI 18 r18)
(expr_list:REG_EH_REGION (const_int 0 [0x0])
(nil)))))
(expr_list:REG_DEP_TRUE (use (mem:BLK (scratch) [0 A8]))
(expr_list:REG_DEP_TRUE (use (reg:SI 3 r3))
(expr_list:REG_DEP_TRUE (use (reg:SI 2 r2 [ p ]))
(nil)))))
built-in-setjmp.c:39: internal compiler error: in rtl_verify_flow_info_1, at
cfgrtl.c:2040
on sh64-unknown-linux-elf target. It doesn't occur on sh64-elf
target which uses the sjlj exceptions. It seems that bt-load.c:
migrate_btr_def() moves the insn which sets the target register
to just after the call insn which was the last insn of a BB having
abnormal edges and the assersion in rtl_verify_flow_info_1 fails.
I'm testing the patch below now.
--- ORIG/trunk/gcc/bt-load.c Wed Mar 15 21:20:37 2006
+++ LOCAL/trunk/gcc/bt-load.c Mon May 1 08:51:18 2006
@@ -1339,6 +1339,15 @@ migrate_btr_def (btr_def def, int min_co
/* Try to move the instruction that sets the target register into
basic block TRY. */
int try_freq = basic_block_freq (try);
+ edge_iterator ei;
+ edge e;
+
+ /* If TRY has abnormal edges, skip it. */
+ FOR_EACH_EDGE (e, ei, try->succs)
+ if (e->flags & EDGE_COMPLEX)
+ break;
+ if (e)
+ continue;
if (dump_file)
fprintf (dump_file, "trying block %d ...", try->index);
--
Summary: gcc.c-torture/execute/built-in-setjmp.c fails on sh64-*-
linux-gnu with -O2
Product: gcc
Version: 4.2.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: rtl-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: kkojima at gcc dot gnu dot org
GCC build triplet: i686-pc-linux-gnu
GCC host triplet: i686-pc-linux-gnu
GCC target triplet: sh64-*-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27406
