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* [Bug bootstrap/47187] New: [4.6 Regression] profiledbootstrap failure on i386 @ 2011-01-06 10:07 jakub at gcc dot gnu.org 2011-01-06 10:16 ` [Bug bootstrap/47187] " jakub at gcc dot gnu.org ` (3 more replies) 0 siblings, 4 replies; 5+ messages in thread From: jakub at gcc dot gnu.org @ 2011-01-06 10:07 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47187 Summary: [4.6 Regression] profiledbootstrap failure on i386 Product: gcc Version: 4.6.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: bootstrap AssignedTo: unassigned@gcc.gnu.org ReportedBy: jakub@gcc.gnu.org profiledbootstrap currently fails on i386, with --enable-checking=release rtl.c (copy_rtx) is miscompiled (after giving a bogus warning that copy is uninitialized (well, in the generated code it is), with checking it ICEs: ../../gcc/rtl.c: In function ‘copy_rtx’: ../../gcc/rtl.c:236:1: error: SSA_NAME_DEF_STMT is wrong Expected definition statement: # .MEM_93 = VDEF <.MEM_91> D.27976_89 = memcpy (copy.26_86, orig.25_85, 12); Actual definition statement: # .MEM_92 = VDEF <.MEM_91> D.27976_89 = memcpy (copy.26_86, orig.25_85, D.27973_83); ../../gcc/rtl.c:236:1: internal compiler error: verify_ssa failed Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions. This is caused by a bug in gimple_stringop_fixed_value where it doesn't handle lhs properly. Small testcase: char buf[64]; char buf2[64]; void * foo (char *p, long size) { return __builtin_memcpy (buf, p, size); } int main (void) { long i; for (i = 0; i < 65536; i++) if (foo ("abcdefghijkl", 12) != buf) __builtin_abort (); if (foo (buf2, 64) != buf) __builtin_abort (); return 0; } ./xgcc -B ./ -O2 -fprofile-generate test.c -o test ./test ./xgcc -B ./ -O2 -fprofile-use test.c -o test ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug bootstrap/47187] [4.6 Regression] profiledbootstrap failure on i386 2011-01-06 10:07 [Bug bootstrap/47187] New: [4.6 Regression] profiledbootstrap failure on i386 jakub at gcc dot gnu.org @ 2011-01-06 10:16 ` jakub at gcc dot gnu.org 2011-01-06 11:03 ` jakub at gcc dot gnu.org ` (2 subsequent siblings) 3 siblings, 0 replies; 5+ messages in thread From: jakub at gcc dot gnu.org @ 2011-01-06 10:16 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47187 Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Priority|P3 |P1 Status|UNCONFIRMED |ASSIGNED Keywords| |ice-checking, wrong-code Last reconfirmed| |2011.01.06 10:06:53 AssignedTo|unassigned at gcc dot |jakub at gcc dot gnu.org |gnu.org | Ever Confirmed|0 |1 Target Milestone|--- |4.6.0 --- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-01-06 10:06:53 UTC --- I'll take care of it. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug bootstrap/47187] [4.6 Regression] profiledbootstrap failure on i386 2011-01-06 10:07 [Bug bootstrap/47187] New: [4.6 Regression] profiledbootstrap failure on i386 jakub at gcc dot gnu.org 2011-01-06 10:16 ` [Bug bootstrap/47187] " jakub at gcc dot gnu.org @ 2011-01-06 11:03 ` jakub at gcc dot gnu.org 2011-01-07 18:43 ` jakub at gcc dot gnu.org 2011-01-07 19:16 ` jakub at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: jakub at gcc dot gnu.org @ 2011-01-06 11:03 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47187 --- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-01-06 10:29:49 UTC --- Created attachment 22911 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22911 gcc46-pr47187.patch Very lightly tested fix. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug bootstrap/47187] [4.6 Regression] profiledbootstrap failure on i386 2011-01-06 10:07 [Bug bootstrap/47187] New: [4.6 Regression] profiledbootstrap failure on i386 jakub at gcc dot gnu.org 2011-01-06 10:16 ` [Bug bootstrap/47187] " jakub at gcc dot gnu.org 2011-01-06 11:03 ` jakub at gcc dot gnu.org @ 2011-01-07 18:43 ` jakub at gcc dot gnu.org 2011-01-07 19:16 ` jakub at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: jakub at gcc dot gnu.org @ 2011-01-07 18:43 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47187 --- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-01-07 18:39:14 UTC --- Author: jakub Date: Fri Jan 7 18:39:11 2011 New Revision: 168581 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=168581 Log: PR bootstrap/47187 * value-prof.c (gimple_stringop_fixed_value): Handle lhs of the call properly. * gcc.dg/tree-prof/pr47187.c: New test. Added: trunk/gcc/testsuite/gcc.dg/tree-prof/pr47187.c Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/value-prof.c ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug bootstrap/47187] [4.6 Regression] profiledbootstrap failure on i386 2011-01-06 10:07 [Bug bootstrap/47187] New: [4.6 Regression] profiledbootstrap failure on i386 jakub at gcc dot gnu.org ` (2 preceding siblings ...) 2011-01-07 18:43 ` jakub at gcc dot gnu.org @ 2011-01-07 19:16 ` jakub at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: jakub at gcc dot gnu.org @ 2011-01-07 19:16 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47187 Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution| |FIXED --- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-01-07 18:44:16 UTC --- Fixed. ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2011-01-07 18:44 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2011-01-06 10:07 [Bug bootstrap/47187] New: [4.6 Regression] profiledbootstrap failure on i386 jakub at gcc dot gnu.org 2011-01-06 10:16 ` [Bug bootstrap/47187] " jakub at gcc dot gnu.org 2011-01-06 11:03 ` jakub at gcc dot gnu.org 2011-01-07 18:43 ` jakub at gcc dot gnu.org 2011-01-07 19:16 ` jakub at gcc dot gnu.org
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