[Bug rtl-optimization/72488] [7 Regression] wrong code (SIGFPE) at -Os and above on x86_64-linux-gnu (in the 64-bit mode)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72488 Richard Biener changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution|---

[Bug rtl-optimization/72488] [7 Regression] wrong code (SIGFPE) at -Os and above on x86_64-linux-gnu (in the 64-bit mode)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72488 --- Comment #15 from Richard Biener --- Author: rguenth Date: Thu Jan 19 12:02:43 2017 New Revision: 244625 URL: https://gcc.gnu.org/viewcvs?rev=244625=gcc=rev Log: 2017-01-19 Richard Biener PR

[Bug rtl-optimization/72488] [7 Regression] wrong code (SIGFPE) at -Os and above on x86_64-linux-gnu (in the 64-bit mode)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72488 --- Comment #14 from Richard Biener --- Author: rguenth Date: Thu Jan 19 12:00:42 2017 New Revision: 244623 URL: https://gcc.gnu.org/viewcvs?rev=244623=gcc=rev Log: 2017-01-19 Richard Biener PR

[Bug rtl-optimization/72488] [7 Regression] wrong code (SIGFPE) at -Os and above on x86_64-linux-gnu (in the 64-bit mode)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72488 --- Comment #13 from Richard Biener --- Ah. Setting value number of t34_9752(D) to t34_9752(D) (changed) Setting value number of t42_9760(D) to t42_9760(D) (changed) WARNING: Giving up with SCCVN due to SCC size 10003 exceeding 1 so we're

[Bug rtl-optimization/72488] [7 Regression] wrong code (SIGFPE) at -Os and above on x86_64-linux-gnu (in the 64-bit mode)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72488 Richard Biener changed: What|Removed |Added Status|NEW |ASSIGNED --- Comment #12 from Richard

[Bug rtl-optimization/72488] [7 Regression] wrong code (SIGFPE) at -Os and above on x86_64-linux-gnu (in the 64-bit mode)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72488 --- Comment #11 from Jeffrey A. Law --- We have two different SSA_NAMEs where their SSA_NAME_INFO is the same pointer. Thus modification range info by way of set_range_info changes the underlying range on both SSA_NAMEs. From a debugging

[Bug rtl-optimization/72488] [7 Regression] wrong code (SIGFPE) at -Os and above on x86_64-linux-gnu (in the 64-bit mode)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72488 --- Comment #10 from rguenther at suse dot de --- On Wed, 18 Jan 2017, law at redhat dot com wrote: > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72488 > > --- Comment #9 from Jeffrey A. Law --- > So, just to record some thoughts. > >

[Bug rtl-optimization/72488] [7 Regression] wrong code (SIGFPE) at -Os and above on x86_64-linux-gnu (in the 64-bit mode)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72488 --- Comment #9 from Jeffrey A. Law --- So, just to record some thoughts. There's about a half-dozen patches, mostly from the August timeframe that will make this bug go latent. The general theme across them is they change the order in which we

[Bug rtl-optimization/72488] [7 Regression] wrong code (SIGFPE) at -Os and above on x86_64-linux-gnu (in the 64-bit mode)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72488 --- Comment #8 from Jeffrey A. Law --- I've got a solid theory here. But it's too late to test and write up.

[Bug rtl-optimization/72488] [7 Regression] wrong code (SIGFPE) at -Os and above on x86_64-linux-gnu (in the 64-bit mode)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72488 --- Comment #7 from Jeffrey A. Law --- I poked at this a bit yesterday (given the irreducible loops I've got some concerns that jump threading might be involved). Whatever is going on, it is highly sensitive to just about any codegen changes.

[Bug rtl-optimization/72488] [7 Regression] wrong code (SIGFPE) at -Os and above on x86_64-linux-gnu (in the 64-bit mode)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72488 --- Comment #6 from rguenther at suse dot de --- On Tue, 22 Nov 2016, jakub at gcc dot gnu.org wrote: > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72488 > > Jakub Jelinek changed: > >What|Removed |Added

[Bug rtl-optimization/72488] [7 Regression] wrong code (SIGFPE) at -Os and above on x86_64-linux-gnu (in the 64-bit mode)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72488 Jakub Jelinek changed: What|Removed |Added CC||jakub at gcc dot gnu.org --- Comment #5

[Bug rtl-optimization/72488] [7 Regression] wrong code (SIGFPE) at -Os and above on x86_64-linux-gnu (in the 64-bit mode)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72488 Jeffrey A. Law changed: What|Removed |Added Priority|P3 |P1 CC|

[Bug rtl-optimization/72488] [7 Regression] wrong code (SIGFPE) at -Os and above on x86_64-linux-gnu (in the 64-bit mode)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72488 --- Comment #4 from Richard Biener --- -Os -fno-tree-sink -fno-tree-reassoc -fno-tree-loop-im -fno-tree-pre -fdisable-tree-ifcombine -fno-tree-loop-optimize -fno-tree-forwprop -fdisable-tree-vrp2 -fdisable-tree-phiopt3 -fdisable-tree-phiopt2

[Bug rtl-optimization/72488] [7 Regression] wrong code (SIGFPE) at -Os and above on x86_64-linux-gnu (in the 64-bit mode)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72488 --- Comment #3 from Richard Biener --- -fdisable-tree-vrp1 "fixes" it (yes, the revision uncovered a latent bug). VRP1 performs a lot of jump-threading thus it isn't very likely the culprit. Program received signal SIGFPE, Arithmetic

[Bug rtl-optimization/72488] [7 Regression] wrong code (SIGFPE) at -Os and above on x86_64-linux-gnu (in the 64-bit mode)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72488 Richard Biener changed: What|Removed |Added Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org ---

[Bug rtl-optimization/72488] [7 Regression] wrong code (SIGFPE) at -Os and above on x86_64-linux-gnu (in the 64-bit mode)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72488 Marek Polacek changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed|