[Bug libgcc/86213] New: -fsplit-stack runtime may clobber SSE input param reg

Component: libgcc Assignee: unassigned at gcc dot gnu.org Reporter: thanm at google dot com Target Milestone: --- Created attachment 44295 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44295&action=edit tar file with reproducer sources and makefile The runtime

[Bug tree-optimization/90316] New: large compile time increase in opt / alias stmt walking for Go example

Priority: P3 Component: tree-optimization Assignee: unassigned at gcc dot gnu.org Reporter: thanm at google dot com Target Milestone: --- Created attachment 46276 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46276&action=edit Go testcase The a

[Bug tree-optimization/90316] [8/9/10 Regression] large compile time increase in opt / alias stmt walking for Go example

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90316 --- Comment #7 from Than McIntosh --- I patched in your change and reran the original testacse. Verified that this fixes the problem, compile time now down to ~8 seconds. Thank you for the very quick turnaround-- much appreciated.

[Bug tree-optimization/90316] [8/9 Regression] large compile time increase in opt / alias stmt walking for Go example

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90316 --- Comment #10 from Than McIntosh --- Update: it looks like we are not out of the woods quite yet -- I am seeing some similar behavior farther into the build. I will try to produce another reduced test case (this one is proving more difficult re

[Bug tree-optimization/90316] [8/9 Regression] large compile time increase in opt / alias stmt walking for Go example

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90316 --- Comment #12 from Than McIntosh --- Created attachment 46304 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46304&action=edit modified test case (file 2 of 2)

[Bug tree-optimization/90316] [8/9 Regression] large compile time increase in opt / alias stmt walking for Go example

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90316 --- Comment #11 from Than McIntosh --- Created attachment 46303 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46303&action=edit modified test case (file 1 of 2)

[Bug tree-optimization/90316] [8/9 Regression] large compile time increase in opt / alias stmt walking for Go example

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90316 --- Comment #13 from Than McIntosh --- I've made a stab at revising the test case to try to trigger the long compile time that I'm still seeing the real application code. Still not quite there yet (revised testcase takes maybe a minute to compi

[Bug tree-optimization/90316] [8/9 Regression] large compile time increase in opt / alias stmt walking for Go example

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90316 --- Comment #18 from Than McIntosh --- I tested the most recent commit (270944). That cuts the compile time on the larger example in half, but still at around 1200 seconds. I took another profile (will attach an SVG image from 'pprof web').

[Bug tree-optimization/90316] [8/9 Regression] large compile time increase in opt / alias stmt walking for Go example

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90316 --- Comment #19 from Than McIntosh --- Created attachment 46313 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46313&action=edit SVG graph from profiling run

[Bug tree-optimization/90316] [8/9 Regression] large compile time increase in opt / alias stmt walking for Go example

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90316 --- Comment #22 from Than McIntosh --- Apologies for the delayed response (busy with other bugs yesterday). Testcase: hard to share the original... it has hundreds if not thousands of imported packages (it's an auto-generated Go file), and I'd

[Bug tree-optimization/90316] [8/9 Regression] large compile time increase in opt / alias stmt walking for Go example

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90316 --- Comment #23 from Than McIntosh --- Created attachment 46326 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46326&action=edit dump from -fdump-statistics-stats

[Bug tree-optimization/90316] [8/9 Regression] large compile time increase in opt / alias stmt walking for Go example

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90316 --- Comment #24 from Than McIntosh --- Did another run with the patch from comment 21. For the offending routine I get: phi-translate cache statistics: size 2097143, 1171808 elements, 0.465610 collisions

[Bug tree-optimization/90316] [8/9 Regression] large compile time increase in opt / alias stmt walking for Go example

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90316 --- Comment #29 from Than McIntosh --- Tested patch at https://gcc.gnu.org/bugzilla/attachment.cgi?id=46337 and that brings compile time now down to about 700 seconds. -ftime-report shows that tree-PRE is still the major culprit. Also tested se

[Bug tree-optimization/90316] [8/9 Regression] large compile time increase in opt / alias stmt walking for Go example

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90316 --- Comment #32 from Than McIntosh --- Compile time for the larger example looks good for the most recent commit on trunk (271124), ~130 seconds. Thanks for all your help on this.

[Bug tree-optimization/90316] [8/9 Regression] large compile time increase in opt / alias stmt walking for Go example

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90316 --- Comment #34 from Than McIntosh --- GCC 8 and 9 branches -- I'll do that experiment later this morning. It's worth noting that if the code in questing uses more modern Go constructs (things introduced in Go 1.11/1.12) it may not compile proper

[Bug tree-optimization/90316] [8/9 Regression] large compile time increase in opt / alias stmt walking for Go example

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90316 --- Comment #35 from Than McIntosh --- I applied r271124 to the gcc-9 branch and re-ran the large testcase -- still has the long compile time (2127 seconds), FWIW.

[Bug tree-optimization/90316] [8/9 Regression] large compile time increase in opt / alias stmt walking for Go example

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90316 --- Comment #37 from Than McIntosh --- (In reply to rguent...@suse.de from comment #36) > Thanks for the experiment. I guess I will limit backporting things > to the GCC 9 branch then. Am I correct that the 2127 seconds are > the same regardle

[Bug go/80226] New: ICE gimple-expr.c:474 on Go function returning multiple empty struct/array values

Severity: normal Priority: P3 Component: go Assignee: ian at airs dot com Reporter: thanm at google dot com CC: cmang at google dot com Target Milestone: --- Compiling the attached test case with gccgo results in an ICE. Example: $ go build

[Bug go/80226] ICE gimple-expr.c:474 on Go function returning multiple empty struct/array values

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80226 --- Comment #1 from Than McIntosh --- This seems to do the trick: diff --git a/gcc/go/go-gcc.cc b/gcc/go/go-gcc.cc index ed6fc2c6105..62baa91fab8 100644 --- a/gcc/go/go-gcc.cc +++ b/gcc/go/go-gcc.cc @@ -2081,7 +2081,8 @@ Gcc_backend::return_sta

[Bug middle-end/67718] New: [aarch64] long double incorrect code for copysign

Component: middle-end Assignee: unassigned at gcc dot gnu.org Reporter: thanm at google dot com Target Milestone: --- Created attachment 36392 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36392&action=edit reduced test case (C++) Compiling the attached example with

[Bug target/67718] [aarch64] long double incorrect code for copysign

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67718 --- Comment #2 from Than McIntosh --- >>using __builtin_copysignl should generate better code generation anyways. Tried replacing the guts of the function with a call to __builtin_copysignl -- the bug is still present. Any recommendations on s

[Bug target/67718] [aarch64] long double incorrect code for copysign

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67718 Than McIntosh changed: What|Removed |Added Status|WAITING |RESOLVED Resolution|---

[Bug go/71396] "use of undefined type" error in gccgo-6 when go (1.6.1) is perfectly happy

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71396 Than McIntosh changed: What|Removed |Added CC||thanm at google dot com --- Comment #1

[Bug debug/101064] New: long compile time in var_tracking for Go package

: debug Assignee: unassigned at gcc dot gnu.org Reporter: thanm at google dot com Target Milestone: --- Created attachment 51008 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51008&action=edit testcase to reproduce (Go files, some profile reports) Building the a