[Bug bootstrap/68404] [6 Regression] PGO/LTO bootstrap failure on ppc64le

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68404 --- Comment #35 from Michael Meissner --- Author: meissner Date: Thu Feb 18 19:59:03 2016 New Revision: 233535 URL: https://gcc.gnu.org/viewcvs?rev=233535=gcc=rev Log: Merge in fix for PR 68404 Modified: branches/ibm/power9/ (props

[Bug bootstrap/68404] [6 Regression] PGO/LTO bootstrap failure on ppc64le

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68404 Michael Meissner changed: What|Removed |Added Status|REOPENED|RESOLVED Resolution|---

[Bug bootstrap/68404] [6 Regression] PGO/LTO bootstrap failure on ppc64le

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68404 --- Comment #33 from Michael Meissner --- Author: meissner Date: Thu Feb 18 19:36:39 2016 New Revision: 233532 URL: https://gcc.gnu.org/viewcvs?rev=233532=gcc=rev Log: [gcc] 2016-02-18 Michael Meissner

[Bug bootstrap/68404] [6 Regression] PGO/LTO bootstrap failure on ppc64le

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68404 --- Comment #32 from Michael Meissner --- On Thu, Feb 11, 2016 at 05:53:35PM +, meissner at linux dot vnet.ibm.com wrote: > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68404 > > --- Comment #31 from Michael Meissner --- > On Thu, Feb 11,

[Bug bootstrap/68404] [6 Regression] PGO/LTO bootstrap failure on ppc64le

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68404 --- Comment #31 from Michael Meissner --- On Thu, Feb 11, 2016 at 02:32:13AM +, bernds at gcc dot gnu.org wrote: > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68404 > > --- Comment #30 from Bernd Schmidt --- > Something like this maybe? I

[Bug bootstrap/68404] [6 Regression] PGO/LTO bootstrap failure on ppc64le

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68404 David Edelsohn changed: What|Removed |Added Status|RESOLVED|REOPENED Resolution|FIXED

[Bug bootstrap/68404] [6 Regression] PGO/LTO bootstrap failure on ppc64le

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68404 --- Comment #29 from Bernd Schmidt --- Mike, this isn't about addresses. It's about an earlyclobber output overlapping an input. Maybe there's an invalid peephole creating such a pattern, or maybe the output need not be marked earlyclobber -

[Bug bootstrap/68404] [6 Regression] PGO/LTO bootstrap failure on ppc64le

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68404 --- Comment #28 from Michael Meissner --- I agree the 'fix' was a work around. I think the real fix is to make the addresses into normal addresses but I need some way of marking the address to say this is ok as a fused address, but not as a

[Bug bootstrap/68404] [6 Regression] PGO/LTO bootstrap failure on ppc64le

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68404 --- Comment #30 from Bernd Schmidt --- Something like this maybe? I don't know much about the machine and can't say whether the earlyclobber is justified, but looking at my dumps this appears to prevent the problematic peephole from triggering.

[Bug bootstrap/68404] [6 Regression] PGO/LTO bootstrap failure on ppc64le

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68404 --- Comment #21 from Jakub Jelinek --- *** Bug 69727 has been marked as a duplicate of this bug. ***

[Bug bootstrap/68404] [6 Regression] PGO/LTO bootstrap failure on ppc64le

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68404 --- Comment #22 from Martin Sebor --- After applying the patch from comment #19 my profiledbootstrap also just completed on the big-endian powerpc64-redhat-linux-gnu (it failed before due to the duplicate bug 69727).

[Bug bootstrap/68404] [6 Regression] PGO/LTO bootstrap failure on ppc64le

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68404 Michael Meissner changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution|---

[Bug bootstrap/68404] [6 Regression] PGO/LTO bootstrap failure on ppc64le

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68404 --- Comment #23 from Michael Meissner --- Author: meissner Date: Tue Feb 9 22:31:31 2016 New Revision: 233255 URL: https://gcc.gnu.org/viewcvs?rev=233255=gcc=rev Log: [gcc] 2016-02-09 Michael Meissner

[Bug bootstrap/68404] [6 Regression] PGO/LTO bootstrap failure on ppc64le

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68404 Bernd Schmidt changed: What|Removed |Added CC||bernds at gcc dot gnu.org --- Comment

[Bug bootstrap/68404] [6 Regression] PGO/LTO bootstrap failure on ppc64le

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68404 --- Comment #25 from Bernd Schmidt --- (In reply to Bill Schmidt from comment #9) > Finally got back to this for a bit. I've tracked the problem down to the > register renaming pass. I suspect it's having trouble with the > fusion_gpr_load_di

[Bug bootstrap/68404] [6 Regression] PGO/LTO bootstrap failure on ppc64le

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68404 --- Comment #20 from Markus Trippelsdorf --- Your patch fixes the problem for me. Thanks. I've also successfully build Firefox and run the Boost testsuite with it. (the Boost testsuite hit the PR68973 ICE once with -mlra. I will reduce a

[Bug bootstrap/68404] [6 Regression] PGO/LTO bootstrap failure on ppc64le

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68404 Michael Meissner changed: What|Removed |Added Attachment #37634|0 |1 is obsolete|

[Bug bootstrap/68404] [6 Regression] PGO/LTO bootstrap failure on ppc64le

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68404 Michael Meissner changed: What|Removed |Added Assignee|wschmidt at gcc dot gnu.org|meissner at gcc dot gnu.org

[Bug bootstrap/68404] [6 Regression] PGO/LTO bootstrap failure on ppc64le

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68404 --- Comment #14 from Michael Meissner --- Created attachment 37634 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37634=edit Proposed patch to fix the problem

[Bug bootstrap/68404] [6 Regression] PGO/LTO bootstrap failure on ppc64le

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68404 --- Comment #15 from Michael Meissner --- Markus Trippelsdorf: Could you try the patch that I attached to the bug? I get past the point that was failing before, but I get new errors (lto type not the same in the decnumber library), so I suspect

[Bug bootstrap/68404] [6 Regression] PGO/LTO bootstrap failure on ppc64le

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68404 --- Comment #16 from Markus Trippelsdorf --- (In reply to Michael Meissner from comment #15) > Markus Trippelsdorf: Could you try the patch that I attached to the bug? I > get past the point that was failing before, but I get new errors (lto

[Bug bootstrap/68404] [6 Regression] PGO/LTO bootstrap failure on ppc64le

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68404 --- Comment #17 from Markus Trippelsdorf --- And the "lto type not the same in decnumber" issue should go away with --disable-werror.

[Bug bootstrap/68404] [6 Regression] PGO/LTO bootstrap failure on ppc64le

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68404 --- Comment #13 from rsandifo at gcc dot gnu.org --- (In reply to Bill Schmidt from comment #10) > Looking at scan_rtx_address () in regrename.c, it indeed looks like a PLUS > nested inside a PLUS isn't handled. I'm not sure if this is a

[Bug bootstrap/68404] [6 Regression] PGO/LTO bootstrap failure on ppc64le

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68404 --- Comment #9 from Bill Schmidt --- Finally got back to this for a bit. I've tracked the problem down to the register renaming pass. I suspect it's having trouble with the fusion_gpr_load_di pattern: (insn 452 236 243 19 (set (reg:DI 9 9)

[Bug bootstrap/68404] [6 Regression] PGO/LTO bootstrap failure on ppc64le

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68404 Bill Schmidt changed: What|Removed |Added CC||jakub at gcc dot gnu.org,

[Bug bootstrap/68404] [6 Regression] PGO/LTO bootstrap failure on ppc64le

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68404 --- Comment #10 from Bill Schmidt --- Looking at scan_rtx_address () in regrename.c, it indeed looks like a PLUS nested inside a PLUS isn't handled. I'm not sure if this is a deficiency in regrename.c, or whether the definition of

[Bug bootstrap/68404] [6 Regression] PGO/LTO bootstrap failure on ppc64le

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68404 --- Comment #12 from Michael Meissner --- On Fri, Feb 05, 2016 at 11:57:05PM +, wschmidt at gcc dot gnu.org wrote: > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68404 > > Bill Schmidt changed: > >What|Removed

[Bug bootstrap/68404] [6 Regression] PGO/LTO bootstrap failure on ppc64le

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68404 --- Comment #8 from Bill Schmidt --- LTO is creating a clone of reg_save_code, specialized on a particular value of parameter reg. The compiled code contains a badly formed address expression, causing the segfault. Continuing to look.

[Bug bootstrap/68404] [6 Regression] PGO/LTO bootstrap failure on ppc64le

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68404 --- Comment #7 from Markus Trippelsdorf --- (In reply to Bill Schmidt from comment #6) > Backtrace from gdb: > > Program received signal SIGSEGV, Segmentation fault. > 0x10cfcf74 in reg_save_code(int, machine_mode) [clone

[Bug bootstrap/68404] [6 Regression] PGO/LTO bootstrap failure on ppc64le

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68404 --- Comment #6 from Bill Schmidt --- Backtrace from gdb: Program received signal SIGSEGV, Segmentation fault. 0x10cfcf74 in reg_save_code(int, machine_mode) [clone .lto_priv.8969] () (gdb) bt #0 0x10cfcf74 in

[Bug bootstrap/68404] [6 Regression] PGO/LTO bootstrap failure on ppc64le

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68404 Bill Schmidt changed: What|Removed |Added Status|NEW |ASSIGNED Assignee|unassigned

[Bug bootstrap/68404] [6 Regression] PGO/LTO bootstrap failure on ppc64le

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68404 Richard Biener changed: What|Removed |Added Status|NEW |RESOLVED Resolution|---

[Bug bootstrap/68404] [6 Regression] PGO/LTO bootstrap failure on ppc64le

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68404 Markus Trippelsdorf changed: What|Removed |Added Status|RESOLVED|NEW Resolution|FIXED

[Bug bootstrap/68404] [6 Regression] PGO/LTO bootstrap failure on ppc64le

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68404 Markus Trippelsdorf changed: What|Removed |Added Keywords||wrong-code

[Bug bootstrap/68404] [6 Regression] PGO/LTO bootstrap failure on ppc64le

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68404 --- Comment #2 from Markus Trippelsdorf --- While bisecting I also observed gcc spinning when building libgcc during phase-profile-feedback.

[Bug bootstrap/68404] [6 Regression] PGO/LTO bootstrap failure on ppc64le

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68404 Richard Biener changed: What|Removed |Added Target Milestone|--- |6.0