[Bug middle-end/69347] [6 regression] excessive compile time with -O2

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69347 --- Comment #8 from Markus Trippelsdorf --- There is still a big difference between gcc-5 and trunk for this testcase: gcc-5: ... TOTAL : 27.97 1.2129.21 213855 kB gcc-6: ... tree VRP

[Bug middle-end/69347] [6 regression] excessive compile time with -O2

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69347 Jeffrey A. Law changed: What|Removed |Added Status|NEW |RESOLVED Resolution|---

[Bug middle-end/69347] [6 regression] excessive compile time with -O2

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69347 --- Comment #7 from Jeffrey A. Law --- Author: law Date: Tue Jan 19 23:03:26 2016 New Revision: 232593 URL: https://gcc.gnu.org/viewcvs?rev=232593&root=gcc&view=rev Log: PR middle-end/69347 * tree-ssa-threadbackwards.c (f

[Bug middle-end/69347] [6 regression] excessive compile time with -O2

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69347 --- Comment #5 from Jeffrey A. Law --- So the most glaring problem is that we're trying awful hard to find jump threads that ultimately we're going to have to throw away anyway. We're being asked to find jump threads to determine a constant valu

[Bug middle-end/69347] [6 regression] excessive compile time with -O2

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69347 --- Comment #4 from Jeffrey A. Law --- We've got function with something like 15k blocks. One particular block as ~3k predecessors. Clearly something in the FSM bits isn't scaling. I've already fixed one bug in this space a few months ago and

[Bug middle-end/69347] [6 regression] excessive compile time with -O2

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69347 --- Comment #3 from Markus Trippelsdorf --- Manual git-bisect on gcc112 points to the same revision: r228739.

[Bug middle-end/69347] [6 regression] excessive compile time with -O2

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69347 Jakub Jelinek changed: What|Removed |Added CC||jakub at gcc dot gnu.org --- Comment #2

[Bug middle-end/69347] [6 regression] excessive compile time with -O2

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69347 Richard Biener changed: What|Removed |Added Priority|P3 |P1

[Bug middle-end/69347] [6 regression] excessive compile time with -O2

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69347 Andrew Pinski changed: What|Removed |Added Target Milestone|--- |6.0

[Bug middle-end/69347] [6 regression] excessive compile time with -O2

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69347 Markus Trippelsdorf changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed|