With "Wed Jul 13 00:19:06 UTC 2005" this test passed.
With "Wed Jul 13 13:14:33 UTC 2005" it fails:
Running
/home/hp/combined/combined/gcc/testsuite/gcc.c-torture/compile/compile.exp ...
FAIL: gcc.c-torture/compile/941014-2.c -O3 -fomit-frame-pointer -funroll-loops
(test for excess errors)
FAIL: gcc.c-torture/compile/941014-2.c -O3 -fomit-frame-pointer
-funroll-all-loops -finline-functions (test for excess errors)
The message in gcc.log points at a RTL failure (basic block register liveness
inconsistency):
/home/hp/combined/combined/gcc/testsuite/gcc.c-torture/compile/941014-2.c: In
function 'f':^M
/home/hp/combined/combined/gcc/testsuite/gcc.c-torture/compile/941014-2.c:37:
fatal error: internal consistency failure^M
(gdb) bt
#0 fatal_error (gmsgid=0x79be62 "internal consistency failure")
at /home/hp/combined/combined/gcc/diagnostic.c:512
#1 0x00000000005a9812 in verify_local_live_at_start
(new_live_at_start=0xa02170,
bb=0x2aaaad9ed900) at /home/hp/combined/combined/gcc/flow.c:495
#2 0x00000000005ab56e in update_life_info (blocks=0x0,
extent=UPDATE_LIFE_LOCAL, prop_flags=0)
at /home/hp/combined/combined/gcc/flow.c:680
#3 0x00000000007339f7 in regrename_optimize () at
/home/hp/combined/combined/gcc/regrename.c:359
#4 0x00000000007346f5 in rest_of_handle_regrename ()
at /home/hp/combined/combined/gcc/regrename.c:1925
#5 0x0000000000691a16 in execute_one_pass (pass=0x946a40)
at /home/hp/combined/combined/gcc/passes.c:774
#6 0x0000000000691b3c in execute_pass_list (pass=0x946a40)
at /home/hp/combined/combined/gcc/passes.c:806
#7 0x0000000000691b4e in execute_pass_list (pass=0x93f700)
at /home/hp/combined/combined/gcc/passes.c:807
#8 0x0000000000691b4e in execute_pass_list (pass=0x93f760)
at /home/hp/combined/combined/gcc/passes.c:807
#9 0x000000000048317e in tree_rest_of_compilation (fndecl=0x2aaaad9db800)
at /home/hp/combined/combined/gcc/tree-optimize.c:420
#10 0x0000000000415726 in c_expand_body (fndecl=0x2aaaad9db800)
at /home/hp/combined/combined/gcc/c-decl.c:6604
#11 0x00000000006bc828 in cgraph_expand_function (node=0x2aaaad9e8630)
at /home/hp/combined/combined/gcc/cgraphunit.c:1033
#12 0x00000000006bd551 in cgraph_optimize () at
/home/hp/combined/combined/gcc/cgraphunit.c:1099
#13 0x0000000000417a1d in c_write_global_declarations ()
at /home/hp/combined/combined/gcc/c-decl.c:7589
#14 0x0000000000665138 in toplev_main (argc=Variable "argc" is not available.
) at /home/hp/combined/combined/gcc/toplev.c:988
(gdb) p bb
$1 = 0x2aaaad9ed900
(gdb) pbb
During symbol reading, Incomplete CFI data; unspecified register rax at
0x00000000005a96a1.
During symbol reading, Incomplete CFI data; unspecified register rdx at
0x00000000005a96a1.
During symbol reading, Incomplete CFI data; unspecified register rcx at
0x00000000005a96a1.
During symbol reading, Incomplete CFI data; unspecified register rsi at
0x00000000005a96a1.
During symbol reading, Incomplete CFI data; unspecified register rdi at
0x00000000005a96a1.
;; basic block 1, loop depth 0, count 0
;; prev block 0, next block 2
;; pred: 0 [90.0%] (fallthru)
;; succ: 2 (fallthru) 4 [100.0%]
;; Registers live at start: 0 [$0] 2 [$2] 3 [$3] 15 [$15] 254 [$254] 259 [rJ]
(note 29 27 30 1 [bb 1] NOTE_INSN_BASIC_BLOCK)
(insn 30 29 31 1 (set (reg:DI 16 $16 [orig:303 lsm_tmp::27 ] [303])
(mem:DI (reg/v/f:DI 0 $0 [orig:307 pDst ] [307]) [2 S8 A64])) 3 {movdi}
(nil)
(expr_list:REG_DEAD (reg/v/f:DI 0 $0 [orig:307 pDst ] [307])
(nil)))
(insn 31 30 33 1 (set (reg:DI 21 $21 [328])
(minus:DI (reg:DI 3 $3 [orig:321 ppt ] [321])
(reg:DI 2 $2 [orig:323 xrot ] [323]))) 9 {subdi3} (nil)
(expr_list:REG_DEAD (reg:DI 2 $2 [orig:323 xrot ] [323])
(nil)))
(insn 33 31 34 1 (set (reg:DI 20 $20 [330])
(ashift:DI (reg:DI 21 $21 [328])
(const_int 32 [0x20]))) 22 {ashldi3} (insn_list:REG_DEP_TRUE 31
(nil))
(expr_list:REG_DEAD (reg:DI 21 $21 [328])
(nil)))
(insn 34 33 35 1 (set (reg:DI 19 $19 [546])
(ashiftrt:DI (reg:DI 20 $20 [330])
(const_int 32 [0x20]))) 23 {ashrdi3} (insn_list:REG_DEP_TRUE 33
(nil))
(expr_list:REG_DEAD (reg:DI 20 $20 [330])
(nil)))
(note 35 34 37 1 NOTE_INSN_DELETED)
(note 37 35 39 1 NOTE_INSN_DELETED)
(note 39 37 961 1 NOTE_INSN_DELETED)
(insn 961 39 963 1 (set (reg:DI 18 $18 [545])
(const_int 0 [0x0])) 3 {movdi} (nil)
(expr_list:REG_EQUIV (const_int 0 [0x0])
(nil)))
(insn 963 961 40 1 (set (reg:DI 2 $2)
(reg:DI 19 $19 [546])) 3 {movdi} (nil)
(expr_list:REG_DEAD (reg:DI 19 $19 [546])
(nil)))
(insn 40 963 41 1 (parallel [
(set (reg:DI 17 $17 [547])
(mod:DI (reg:DI 2 $2)
(reg:DI 18 $18 [545])))
(clobber (reg:DI 2 $2))
(clobber (reg:DI 18 $18 [545]))
(clobber (reg:DI 260 rR))
]) 21 {*moddi3_nonknuth} (insn_list:REG_DEP_TRUE 36
(insn_list:REG_DEP_TRUE 34 (nil)))
(expr_list:REG_DEAD (reg:DI 2 $2)
(expr_list:REG_DEAD (reg:DI 18 $18 [545])
(expr_list:REG_UNUSED (reg:DI 260 rR)
(expr_list:REG_UNUSED (reg:DI 18 $18 [545])
(expr_list:REG_UNUSED (reg:DI 2 $2)
(nil)))))))
(note 41 40 42 1 NOTE_INSN_DELETED)
(jump_insn 42 41 875 1 (set (pc)
(if_then_else (ge (reg:DI 17 $17 [547])
(const_int 0 [0x0]))
(label_ref:DI 237)
(pc))) 51 {*bCC_foldable} (insn_list:REG_DEP_TRUE 40 (nil))
(expr_list:REG_DEAD (reg:DI 17 $17 [547])
(expr_list:REG_BR_PROB (const_int 10000 [0x2710])
(nil))))
;; Registers live at end: 1 [$1] 3 [$3] 15 [$15] 16 [$16] 254 [$254] 259 [rJ]
--
Summary: [4.1 regression] testsuite failure, gcc.c-
torture/compile/941014-2.c -O3 loops
Product: gcc
Version: 4.1.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P2
Component: rtl-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: hp at gcc dot gnu dot org
CC: gcc-bugs at gcc dot gnu dot org
GCC host triplet: x86_64-unknown-linux-gnu
GCC target triplet: mmix-knuth-mmixware
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22469
