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From: "rguenth at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/28778] [4.0/4.1/4.2 Regression] alias bug with cast and call clobbered Date: Sat, 19 Aug 2006 14:27:00 -0000 [thread overview] Message-ID: <20060819142732.11343.qmail@sourceware.org> (raw) In-Reply-To: <bug-28778-1447@http.gcc.gnu.org/bugzilla/> ------- Comment #8 from rguenth at gcc dot gnu dot org 2006-08-19 14:27 ------- ;; Function find (find) Points-to analysis Constraints: ANYTHING = &ANYTHING READONLY = &ANYTHING INTEGER = &ANYTHING alistp = &ANYTHING blist_3 = alistp blist_6 = &list blist_1 = blist_3 blist_1 = blist_6 blist.0_7 = blist_1 Collapsing static cycles and doing variable substitution: Collapsing blist_3 into alistp Collapsing blist.0_7 into blist_1 Solving graph: Points-to sets NULL = { } ANYTHING = { ANYTHING } READONLY = { ANYTHING } INTEGER = { ANYTHING } alistp = { ANYTHING } blist_3 = { ANYTHING } blist_6 = { list } list = { } blist_1 = { ANYTHING list } blist.0_7 = { ANYTHING list } find: Total number of aliased vops: 0 Referenced variables in find: 5 Variable: alistp, UID 1523, const int *, default def: alistp_2 Variable: blist, UID 1526, const int * Variable: list, UID 1527, int[32], is addressable, default def: list_4 Variable: blist.0, UID 1528, const GLint *, symbol memory tag: SMT.30 Variable: SMT.30, UID 1575, const GLint, is addressable, is global, call clobbered (, passed to call, is global var ) Pointed-to sets for pointers in find alistp_2, its value escapes, points-to anything blist_3, points-to anything blist_6, points-to vars: { list } blist_1, points-to anything blist.0_7, is dereferenced, its value escapes, points-to anything Flow-insensitive alias information for find Aliased symbols list, UID 1527, int[32], is addressable, default def: list_4 SMT.30, UID 1575, const GLint, is addressable, is global, call clobbered (, passed to call, is global var ) Dereferenced pointers blist.0, UID 1528, const GLint *, symbol memory tag: SMT.30 Symbol memory tags SMT.30, UID 1575, const GLint, is addressable, is global, call clobbered (, passed to call, is global var ) Flow-sensitive alias information for find SSA_NAME pointers Name memory tags Registering new PHI nodes in block #0 Registering new PHI nodes in block #2 Registering new PHI nodes in block #3 Registering new PHI nodes in block #4 Updating SSA information for statement list[3] = 42; Registering new PHI nodes in block #5 Updating SSA information for statement aglChoosePixelFormat (blist.0_7); Symbols to be put in SSA form list SMT.30 Incremental SSA update started at block: 0 Number of blocks in CFG: 6 Number of blocks to update: 5 ( 83%) Affected blocks: 0 2 3 4 5 find (alistp) { int list[32]; const int * blist; const GLint * blist.0; # BLOCK 2 # PRED: ENTRY (fallthru) if (alistp_2 != 0B) goto <L0>; else goto <L1>; # SUCC: 3 (true) 4 (false) # BLOCK 3 # PRED: 2 (true) <L0>:; blist_3 = alistp_2; goto <bb 5> (<L2>); # SUCC: 5 (fallthru) # BLOCK 4 # PRED: 2 (false) <L1>:; # list_5 = V_MAY_DEF <list_4>; list[3] = 42; blist_6 = &list; # SUCC: 5 (fallthru) # BLOCK 5 # PRED: 3 (fallthru) 4 (fallthru) # blist_1 = PHI <blist_3(3), blist_6(4)>; <L2>:; blist.0_7 = (const GLint *) blist_1; # SMT.30_9 = V_MAY_DEF <SMT.30_8>; aglChoosePixelFormat (blist.0_7); return; # SUCC: EXIT } -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28778
next prev parent reply other threads:[~2006-08-19 14:27 UTC|newest] Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top 2006-08-18 21:07 [Bug tree-optimization/28778] New: strict-aliasing bug mrs at apple dot com 2006-08-18 21:11 ` [Bug tree-optimization/28778] " pinskia at gcc dot gnu dot org 2006-08-18 21:12 ` mrs at apple dot com 2006-08-18 21:15 ` pinskia at gcc dot gnu dot org 2006-08-18 21:18 ` [Bug tree-optimization/28778] [4.0/4.1/4.2 Regression] alias bug with cast and call clobbered pinskia at gcc dot gnu dot org 2006-08-19 10:15 ` rguenth at gcc dot gnu dot org 2006-08-19 10:44 ` rguenth at gcc dot gnu dot org 2006-08-19 14:10 ` dberlin at gcc dot gnu dot org 2006-08-19 14:27 ` rguenth at gcc dot gnu dot org [this message] 2006-08-20 22:53 ` mmitchel at gcc dot gnu dot org 2006-08-21 1:34 ` dberlin at dberlin dot org 2006-08-21 16:34 ` janis at gcc dot gnu dot org 2006-08-25 19:57 ` drow at gcc dot gnu dot org 2006-08-25 20:51 ` drow at gcc dot gnu dot org 2006-08-25 20:57 ` drow at gcc dot gnu dot org 2006-08-25 22:12 ` drow at gcc dot gnu dot org 2006-08-26 15:15 ` drow at gcc dot gnu dot org 2006-08-26 20:30 ` rguenth at gcc dot gnu dot org 2006-08-26 20:42 ` rguenth at gcc dot gnu dot org 2006-08-26 23:25 ` drow at gcc dot gnu dot org 2006-08-27 4:12 ` dberlin at dberlin dot org 2006-08-27 14:20 ` rguenth at gcc dot gnu dot org 2006-08-27 15:41 ` dberlin at dberlin dot org 2006-08-27 15:50 ` rguenth at gcc dot gnu dot org 2006-08-27 16:00 ` dberlin at dberlin dot org 2006-08-27 17:56 ` drow at gcc dot gnu dot org 2006-08-27 20:25 ` mmitchel at gcc dot gnu dot org 2006-08-27 20:28 ` mmitchel at gcc dot gnu dot org 2006-08-27 20:51 ` dberlin at dberlin dot org 2006-08-27 21:09 ` dberlin at dberlin dot org 2006-08-28 8:43 ` rguenth at gcc dot gnu dot org 2006-09-09 17:55 ` dberlin at dberlin dot org 2006-09-16 18:09 ` steven at gcc dot gnu dot org 2006-09-16 20:03 ` dberlin at dberlin dot org 2006-09-26 4:44 ` acahalan at gmail dot com 2006-09-26 4:56 ` Andrew Pinski 2006-09-26 4:56 ` pinskia at physics dot uc dot edu 2006-09-26 14:17 ` acahalan at gmail dot com 2006-09-26 14:32 ` pinskia at gcc dot gnu dot org 2006-09-26 15:33 ` acahalan at gmail dot com 2006-09-26 15:47 ` dberlin at dberlin dot org 2006-09-26 15:49 ` pinskia at gcc dot gnu dot org 2006-09-26 15:57 ` pcarlini at suse dot de 2006-09-27 2:12 ` dberlin at dberlin dot org 2006-10-13 17:50 ` dberlin at gcc dot gnu dot org 2006-10-19 23:06 ` dberlin at gcc dot gnu dot org 2006-10-19 23:07 ` dberlin at gcc dot gnu dot org 2006-10-20 8:25 ` [Bug tree-optimization/28778] [4.0/4.1 " rguenth at gcc dot gnu dot org 2006-11-05 22:17 ` chuck at vertica dot com 2006-11-05 22:26 ` drow at gcc dot gnu dot org 2006-11-05 22:26 ` pinskia at gcc dot gnu dot org 2006-11-05 23:39 ` chuck at vertica dot com 2007-01-25 15:51 ` gdr at gcc dot gnu dot org 2007-02-07 22:52 ` pinskia at gcc dot gnu dot org 2007-02-14 9:09 ` mmitchel at gcc dot gnu dot org 2008-07-04 15:51 ` [Bug tree-optimization/28778] [4.1 " jsm28 at gcc dot gnu dot org
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