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* [Bug c/14261] New: Compilation failure due to if-conversion @ 2004-02-23 18:31 sje at cup dot hp dot com 2004-02-23 18:39 ` [Bug c/14261] " gerald at pfeifer dot com ` (2 more replies) 0 siblings, 3 replies; 8+ messages in thread From: sje at cup dot hp dot com @ 2004-02-23 18:31 UTC (permalink / raw) To: gcc-bugs The attached program will not compile with -O2 on IA64 linux. If you turn off if-conversion it will compile. See http://gcc.gnu.org/ml/gcc/2004-02/msg01115.html for some analysis from Jim Wilson. This was tested with the ToT sources dated 20040212 and also exists on older GCC compilers for IA64 Linux. typedef union YYSTYPE { double dval; int intval; } YYSTYPE; YYSTYPE *x; int knparse (void) { YYSTYPE yyvsa[200]; register YYSTYPE *yyvsp; YYSTYPE yyval, *x; yyvsp = &yyvsa[100]; if (yyvsp[3].intval > yyvsp[0].intval) yyval.intval = yyvsp[3].intval; else yyval.intval = yyvsp[0].intval; *x = yyval; } -- Summary: Compilation failure due to if-conversion Product: gcc Version: 3.5.0 Status: UNCONFIRMED Severity: normal Priority: P2 Component: c AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: sje at cup dot hp dot com CC: gcc-bugs at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14261 ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug c/14261] Compilation failure due to if-conversion 2004-02-23 18:31 [Bug c/14261] New: Compilation failure due to if-conversion sje at cup dot hp dot com @ 2004-02-23 18:39 ` gerald at pfeifer dot com 2004-02-24 4:57 ` [Bug optimization/14261] " pinskia at gcc dot gnu dot org 2004-08-16 0:32 ` [Bug rtl-optimization/14261] ICE " giovannibajo at libero dot it 2 siblings, 0 replies; 8+ messages in thread From: gerald at pfeifer dot com @ 2004-02-23 18:39 UTC (permalink / raw) To: gcc-bugs -- What |Removed |Added ---------------------------------------------------------------------------- CC| |gerald at pfeifer dot com, | |schwab at suse dot de http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14261 ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug optimization/14261] Compilation failure due to if-conversion 2004-02-23 18:31 [Bug c/14261] New: Compilation failure due to if-conversion sje at cup dot hp dot com 2004-02-23 18:39 ` [Bug c/14261] " gerald at pfeifer dot com @ 2004-02-24 4:57 ` pinskia at gcc dot gnu dot org 2004-08-16 0:32 ` [Bug rtl-optimization/14261] ICE " giovannibajo at libero dot it 2 siblings, 0 replies; 8+ messages in thread From: pinskia at gcc dot gnu dot org @ 2004-02-24 4:57 UTC (permalink / raw) To: gcc-bugs -- What |Removed |Added ---------------------------------------------------------------------------- Component|c |optimization http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14261 ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug rtl-optimization/14261] ICE due to if-conversion 2004-02-23 18:31 [Bug c/14261] New: Compilation failure due to if-conversion sje at cup dot hp dot com 2004-02-23 18:39 ` [Bug c/14261] " gerald at pfeifer dot com 2004-02-24 4:57 ` [Bug optimization/14261] " pinskia at gcc dot gnu dot org @ 2004-08-16 0:32 ` giovannibajo at libero dot it 2 siblings, 0 replies; 8+ messages in thread From: giovannibajo at libero dot it @ 2004-08-16 0:32 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From giovannibajo at libero dot it 2004-08-16 00:32 ------- Confirmed by Jim Wilson, and the submitter says it is not a regression. The testcase fails on IA-64, but Jim's analysys points to deficiencies in the ifcvt, so I'm keeping this as a rtl-opt bug. -- What |Removed |Added ---------------------------------------------------------------------------- CC| |wilson at gcc dot gnu dot | |org Status|UNCONFIRMED |NEW Ever Confirmed| |1 Keywords| |ice-on-valid-code Last reconfirmed|0000-00-00 00:00:00 |2004-08-16 00:32:13 date| | Summary|Compilation failure due to |ICE due to if-conversion |if-conversion | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14261 ^ permalink raw reply [flat|nested] 8+ messages in thread
[parent not found: <bug-14261-3107@http.gcc.gnu.org/bugzilla/>]
* [Bug rtl-optimization/14261] ICE due to if-conversion [not found] <bug-14261-3107@http.gcc.gnu.org/bugzilla/> @ 2006-02-26 15:36 ` roger at eyesopen dot com 2006-03-04 19:49 ` pinskia at gcc dot gnu dot org ` (2 subsequent siblings) 3 siblings, 0 replies; 8+ messages in thread From: roger at eyesopen dot com @ 2006-02-26 15:36 UTC (permalink / raw) To: gcc-bugs ------- Comment #2 from roger at eyesopen dot com 2006-02-26 15:00 ------- I've posted a proposed solution to gcc-patches: http://gcc.gnu.org/ml/gcc-patches/2006-02/msg01909.html -- roger at eyesopen dot com changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |patch http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14261 ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug rtl-optimization/14261] ICE due to if-conversion [not found] <bug-14261-3107@http.gcc.gnu.org/bugzilla/> 2006-02-26 15:36 ` roger at eyesopen dot com @ 2006-03-04 19:49 ` pinskia at gcc dot gnu dot org 2006-05-03 8:25 ` krebbel1 at de dot ibm dot com 2006-05-15 17:38 ` roger at eyesopen dot com 3 siblings, 0 replies; 8+ messages in thread From: pinskia at gcc dot gnu dot org @ 2006-03-04 19:49 UTC (permalink / raw) To: gcc-bugs ------- Comment #3 from pinskia at gcc dot gnu dot org 2006-03-04 19:49 ------- *** Bug 26555 has been marked as a duplicate of this bug. *** -- pinskia at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |debian-gcc at lists dot | |debian dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14261 ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug rtl-optimization/14261] ICE due to if-conversion [not found] <bug-14261-3107@http.gcc.gnu.org/bugzilla/> 2006-02-26 15:36 ` roger at eyesopen dot com 2006-03-04 19:49 ` pinskia at gcc dot gnu dot org @ 2006-05-03 8:25 ` krebbel1 at de dot ibm dot com 2006-05-15 17:38 ` roger at eyesopen dot com 3 siblings, 0 replies; 8+ messages in thread From: krebbel1 at de dot ibm dot com @ 2006-05-03 8:25 UTC (permalink / raw) To: gcc-bugs ------- Comment #4 from krebbel1 at de dot ibm dot com 2006-05-03 08:25 ------- The similar problem occurs on s390x: http://gcc.gnu.org/ml/gcc-patches/2006-03/msg01795.html The problem (for ia64 and s390x) is fixed on mainline by: http://gcc.gnu.org/ml/gcc-patches/2006-04/msg00697.html which unfortunately revealed a problem with paradoxical subregs on big endian machines which is fixed by: http://gcc.gnu.org/ml/gcc-patches/2006-04/msg00951.html (I've added the PR numbers to the changelog entries afterwards, so the patches aren't mentioned here automatically.) For gcc 4.1 I've proposed the following trivial patch, in case the others are considered to risky for gcc 4.1: Index: gcc/ifcvt.c =================================================================== *** gcc/ifcvt.c.orig 2006-03-31 17:03:27.000000000 +0200 --- gcc/ifcvt.c 2006-03-31 17:04:04.000000000 +0200 *************** noce_process_if_block (struct ce_if_bloc *** 2231,2236 **** --- 2231,2238 ---- { if (no_new_pseudos || GET_MODE (x) == BLKmode) return FALSE; + if (GET_CODE (x) == ZERO_EXTRACT) + return FALSE; x = gen_reg_rtx (GET_MODE (GET_CODE (x) == STRICT_LOW_PART ? XEXP (x, 0) : x)); } -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14261 ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug rtl-optimization/14261] ICE due to if-conversion [not found] <bug-14261-3107@http.gcc.gnu.org/bugzilla/> ` (2 preceding siblings ...) 2006-05-03 8:25 ` krebbel1 at de dot ibm dot com @ 2006-05-15 17:38 ` roger at eyesopen dot com 3 siblings, 0 replies; 8+ messages in thread From: roger at eyesopen dot com @ 2006-05-15 17:38 UTC (permalink / raw) To: gcc-bugs ------- Comment #5 from roger at eyesopen dot com 2006-05-15 17:37 ------- This should now be fixed on both mainline and the 4.1 branch. Thanks Andreas. -- roger at eyesopen dot com changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution| |FIXED Target Milestone|--- |4.1.2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14261 ^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2006-05-15 17:38 UTC | newest] Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2004-02-23 18:31 [Bug c/14261] New: Compilation failure due to if-conversion sje at cup dot hp dot com 2004-02-23 18:39 ` [Bug c/14261] " gerald at pfeifer dot com 2004-02-24 4:57 ` [Bug optimization/14261] " pinskia at gcc dot gnu dot org 2004-08-16 0:32 ` [Bug rtl-optimization/14261] ICE " giovannibajo at libero dot it [not found] <bug-14261-3107@http.gcc.gnu.org/bugzilla/> 2006-02-26 15:36 ` roger at eyesopen dot com 2006-03-04 19:49 ` pinskia at gcc dot gnu dot org 2006-05-03 8:25 ` krebbel1 at de dot ibm dot com 2006-05-15 17:38 ` roger at eyesopen dot com
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