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* [Bug tree-optimization/45912] New: [4.6 regression] Patch for PR tree-optimization/44972 caused 2500+ FAILs on Solaris 2/SPARC @ 2010-10-06 16:44 ro at gcc dot gnu.org 2010-10-06 17:18 ` [Bug tree-optimization/45912] " ebotcazou at gcc dot gnu.org ` (6 more replies) 0 siblings, 7 replies; 8+ messages in thread From: ro at gcc dot gnu.org @ 2010-10-06 16:44 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45912 Summary: [4.6 regression] Patch for PR tree-optimization/44972 caused 2500+ FAILs on Solaris 2/SPARC Product: gcc Version: 4.6.0 Status: UNCONFIRMED Keywords: wrong-code Severity: major Priority: P3 Component: tree-optimization AssignedTo: unassigned@gcc.gnu.org ReportedBy: ro@gcc.gnu.org CC: ebotcazou@gcc.gnu.org, jamborm@gcc.gnu.org Host: sparc-sun-solaris2.* Target: sparc-sun-solaris2.* Build: sparc-sun-solaris2.* Created attachment 21973 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=21973 stage1 assembler output The Solaris 2/SPARC port (probably every SPARC port) is in a terrible state with 2500+ execution failures in the testsuite (mostly 64-bit). A reghunt revealed that this was introduced by this patch: 2010-09-10 Martin Jambor <mjambor@suse.cz> PR tree-optimization/44972 * tree-sra.c: Include toplev.h. (build_ref_for_offset): Entirely reimplemented. (build_ref_for_model): New function. (build_user_friendly_ref_for_offset): New function. (analyze_access_subtree): Removed build_ref_for_offset check. (propagate_subaccesses_across_link): Likewise. (create_artificial_child_access): Use build_user_friendly_ref_for_offset. [...] The reghunt proved difficult because originally the tree didn't build due to PR tree-optimization/45611 (fixed in r164244) and PR bootstrap/45630 (fixed in r164163). The problem is a miscompilation since it doesn't occur with the stage1 compiler. I've used the -O2 compilation of gcc.c-torture/execute/20000706-5.c as the testcase during the reghunt. It can be compiled with % cc1 20000706-5.c -mptr64 -mstack-bias -mno-v8plus -mcpu=v9 -quiet -m64 -O2 -w I'm attaching the stage1 and stage3 .s files for comparison. The test SEGVs here: Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 1 (LWP 1)] 0x000000010000098c in main () 1: x/i $pc => 0x10000098c <main+36>: st %g3, [ %g4 + %g2 ] (gdb) p/x $g4+$g2 $3 = 0x37ffff1d8 The target address is unmapped in the process, as can be seen with pmap: 19505: /var/gcc/reghunt/102852/gcc/testsuite/gcc/stage3/20000706-5.x2 0000000100000000 8K r-x-- /var/gcc/reghunt/102852/gcc/testsuite/gcc/stage3/20000706-5.x2 0000000100100000 8K rwx-- /var/gcc/reghunt/102852/gcc/testsuite/gcc/stage3/20000706-5.x2 FFFFFFFF7F100000 1216K r-x-- /lib/sparcv9/libc.so.1 FFFFFFFF7F230000 48K r-x-- /lib/sparcv9/libc.so.1 FFFFFFFF7F300000 24K rwx-- [ anon ] FFFFFFFF7F33C000 72K rwx-- /lib/sparcv9/libc.so.1 FFFFFFFF7F34E000 8K rwx-- /lib/sparcv9/libc.so.1 FFFFFFFF7F400000 640K r-x-- /lib/sparcv9/libm.so.2 FFFFFFFF7F500000 8K rwx-- [ anon ] FFFFFFFF7F59E000 40K rwx-- /lib/sparcv9/libm.so.2 FFFFFFFF7F600000 64K r-x-- /lib/sparcv9/ld.so.1 FFFFFFFF7F610000 64K r-x-- /lib/sparcv9/ld.so.1 FFFFFFFF7F620000 64K r-x-- /lib/sparcv9/ld.so.1 FFFFFFFF7F630000 24K r-x-- /lib/sparcv9/ld.so.1 FFFFFFFF7F700000 64K rwx-- [ anon ] FFFFFFFF7F736000 16K rwx-- /lib/sparcv9/ld.so.1 FFFFFFFF7F73A000 8K rwx-- /lib/sparcv9/ld.so.1 FFFFFFFF7FFF0000 64K rw--- [ stack ] total 2440K Please fix asap; it is almost impossible to do any useful work on a port that broken. Thanks. Rainer ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/45912] [4.6 regression] Patch for PR tree-optimization/44972 caused 2500+ FAILs on Solaris 2/SPARC 2010-10-06 16:44 [Bug tree-optimization/45912] New: [4.6 regression] Patch for PR tree-optimization/44972 caused 2500+ FAILs on Solaris 2/SPARC ro at gcc dot gnu.org @ 2010-10-06 17:18 ` ebotcazou at gcc dot gnu.org 2010-10-07 9:53 ` rguenth at gcc dot gnu.org ` (5 subsequent siblings) 6 siblings, 0 replies; 8+ messages in thread From: ebotcazou at gcc dot gnu.org @ 2010-10-06 17:18 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45912 Eric Botcazou <ebotcazou at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |ASSIGNED Last reconfirmed| |2010.10.06 17:17:47 AssignedTo|unassigned at gcc dot |ebotcazou at gcc dot |gnu.org |gnu.org Ever Confirmed|0 |1 --- Comment #2 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2010-10-06 17:17:47 UTC --- Investigating. ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/45912] [4.6 regression] Patch for PR tree-optimization/44972 caused 2500+ FAILs on Solaris 2/SPARC 2010-10-06 16:44 [Bug tree-optimization/45912] New: [4.6 regression] Patch for PR tree-optimization/44972 caused 2500+ FAILs on Solaris 2/SPARC ro at gcc dot gnu.org 2010-10-06 17:18 ` [Bug tree-optimization/45912] " ebotcazou at gcc dot gnu.org @ 2010-10-07 9:53 ` rguenth at gcc dot gnu.org 2010-10-11 22:07 ` [Bug rtl-optimization/45912] " ebotcazou at gcc dot gnu.org ` (4 subsequent siblings) 6 siblings, 0 replies; 8+ messages in thread From: rguenth at gcc dot gnu.org @ 2010-10-07 9:53 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45912 Richard Guenther <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Target Milestone|--- |4.6.0 ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug rtl-optimization/45912] [4.6 regression] Patch for PR tree-optimization/44972 caused 2500+ FAILs on Solaris 2/SPARC 2010-10-06 16:44 [Bug tree-optimization/45912] New: [4.6 regression] Patch for PR tree-optimization/44972 caused 2500+ FAILs on Solaris 2/SPARC ro at gcc dot gnu.org 2010-10-06 17:18 ` [Bug tree-optimization/45912] " ebotcazou at gcc dot gnu.org 2010-10-07 9:53 ` rguenth at gcc dot gnu.org @ 2010-10-11 22:07 ` ebotcazou at gcc dot gnu.org 2010-10-12 11:12 ` [Bug target/45912] " ebotcazou at gcc dot gnu.org ` (3 subsequent siblings) 6 siblings, 0 replies; 8+ messages in thread From: ebotcazou at gcc dot gnu.org @ 2010-10-11 22:07 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45912 Eric Botcazou <ebotcazou at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Component|tree-optimization |rtl-optimization --- Comment #3 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2010-10-11 22:06:49 UTC --- The new build_ref_for_offset is miscompiled at -O or above. ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug target/45912] [4.6 regression] Patch for PR tree-optimization/44972 caused 2500+ FAILs on Solaris 2/SPARC 2010-10-06 16:44 [Bug tree-optimization/45912] New: [4.6 regression] Patch for PR tree-optimization/44972 caused 2500+ FAILs on Solaris 2/SPARC ro at gcc dot gnu.org ` (2 preceding siblings ...) 2010-10-11 22:07 ` [Bug rtl-optimization/45912] " ebotcazou at gcc dot gnu.org @ 2010-10-12 11:12 ` ebotcazou at gcc dot gnu.org 2010-10-12 15:27 ` [Bug rtl-optimization/45912] " ebotcazou at gcc dot gnu.org ` (2 subsequent siblings) 6 siblings, 0 replies; 8+ messages in thread From: ebotcazou at gcc dot gnu.org @ 2010-10-12 11:12 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45912 Eric Botcazou <ebotcazou at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Component|rtl-optimization |target --- Comment #4 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2010-10-12 11:11:44 UTC --- Long-standing latent bug in the SPARC back-end. ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug rtl-optimization/45912] [4.6 regression] Patch for PR tree-optimization/44972 caused 2500+ FAILs on Solaris 2/SPARC 2010-10-06 16:44 [Bug tree-optimization/45912] New: [4.6 regression] Patch for PR tree-optimization/44972 caused 2500+ FAILs on Solaris 2/SPARC ro at gcc dot gnu.org ` (3 preceding siblings ...) 2010-10-12 11:12 ` [Bug target/45912] " ebotcazou at gcc dot gnu.org @ 2010-10-12 15:27 ` ebotcazou at gcc dot gnu.org 2010-10-13 21:44 ` ebotcazou at gcc dot gnu.org 2010-10-13 22:24 ` ebotcazou at gcc dot gnu.org 6 siblings, 0 replies; 8+ messages in thread From: ebotcazou at gcc dot gnu.org @ 2010-10-12 15:27 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45912 Eric Botcazou <ebotcazou at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Component|target |rtl-optimization --- Comment #5 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2010-10-12 15:27:27 UTC --- But there is a much bigger problem upstream. ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug rtl-optimization/45912] [4.6 regression] Patch for PR tree-optimization/44972 caused 2500+ FAILs on Solaris 2/SPARC 2010-10-06 16:44 [Bug tree-optimization/45912] New: [4.6 regression] Patch for PR tree-optimization/44972 caused 2500+ FAILs on Solaris 2/SPARC ro at gcc dot gnu.org ` (4 preceding siblings ...) 2010-10-12 15:27 ` [Bug rtl-optimization/45912] " ebotcazou at gcc dot gnu.org @ 2010-10-13 21:44 ` ebotcazou at gcc dot gnu.org 2010-10-13 22:24 ` ebotcazou at gcc dot gnu.org 6 siblings, 0 replies; 8+ messages in thread From: ebotcazou at gcc dot gnu.org @ 2010-10-13 21:44 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45912 --- Comment #6 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2010-10-13 21:43:44 UTC --- Author: ebotcazou Date: Wed Oct 13 21:43:42 2010 New Revision: 165437 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=165437 Log: PR rtl-optimization/45912 * ira-costs.c (ira_tune_allocno_costs_and_cover_classes): Test the regno of registers instead of their index to compute the alignment. Added: trunk/gcc/testsuite/gcc.c-torture/execute/20101013-1.c Modified: trunk/gcc/ChangeLog trunk/gcc/ira-costs.c trunk/gcc/testsuite/ChangeLog ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug rtl-optimization/45912] [4.6 regression] Patch for PR tree-optimization/44972 caused 2500+ FAILs on Solaris 2/SPARC 2010-10-06 16:44 [Bug tree-optimization/45912] New: [4.6 regression] Patch for PR tree-optimization/44972 caused 2500+ FAILs on Solaris 2/SPARC ro at gcc dot gnu.org ` (5 preceding siblings ...) 2010-10-13 21:44 ` ebotcazou at gcc dot gnu.org @ 2010-10-13 22:24 ` ebotcazou at gcc dot gnu.org 6 siblings, 0 replies; 8+ messages in thread From: ebotcazou at gcc dot gnu.org @ 2010-10-13 22:24 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45912 Eric Botcazou <ebotcazou at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution| |FIXED --- Comment #7 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2010-10-13 22:23:56 UTC --- . ^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2010-10-13 22:24 UTC | newest] Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2010-10-06 16:44 [Bug tree-optimization/45912] New: [4.6 regression] Patch for PR tree-optimization/44972 caused 2500+ FAILs on Solaris 2/SPARC ro at gcc dot gnu.org 2010-10-06 17:18 ` [Bug tree-optimization/45912] " ebotcazou at gcc dot gnu.org 2010-10-07 9:53 ` rguenth at gcc dot gnu.org 2010-10-11 22:07 ` [Bug rtl-optimization/45912] " ebotcazou at gcc dot gnu.org 2010-10-12 11:12 ` [Bug target/45912] " ebotcazou at gcc dot gnu.org 2010-10-12 15:27 ` [Bug rtl-optimization/45912] " ebotcazou at gcc dot gnu.org 2010-10-13 21:44 ` ebotcazou at gcc dot gnu.org 2010-10-13 22:24 ` ebotcazou at gcc dot gnu.org
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