cmd/compile: recent regression in ppc64x builders: internal compiler error: pointer in non-pointer register g #25504
Description
What version of Go are you using (go version)?
tip
Does this issue reproduce with the latest release?
yes
What operating system and processor architecture are you using (go env)?
ppc64 & ppc64le
A regression was introduced earlier today which then hid 2 more regressions introduced after which affect the ppc64 & ppc64le builders. The first two were fixed, now seeing this:
--- FAIL: TestCoverpkgAllRuntime (7.07s)
go_test.go:6004: running testgo [test -coverpkg=all x]
go_test.go:6004: standard output:
go_test.go:6004: FAIL x [build failed]
go_test.go:6004: standard error:
go_test.go:6004: # runtime
../../runtime/proc.go:4101: internal compiler error: pointer in non-pointer register g
goroutine 6 [running]:
runtime/debug.Stack(0x0, 0x0, 0x0)
/home/boger/golang/really.plain/go/src/runtime/debug/stack.go:24 +0x94
cmd/compile/internal/gc.Fatalf(0x81eeca, 0x22, 0xc0049be8e0, 0x1, 0x1)
/home/boger/golang/really.plain/go/src/cmd/compile/internal/gc/subr.go:182 +0x1c8
cmd/compile/internal/gc.(*ssafn).Fatalf(0xc0077d8e40, 0x10060920000003e, 0x81eeca, 0x22, 0xc0049be8e0, 0x1, 0x1)
/home/boger/golang/really.plain/go/src/cmd/compile/internal/gc/ssa.go:5537 +0x64
cmd/compile/internal/ssa.(*Value).Fatalf(0xc004065ee0, 0x81eeca, 0x22, 0xc0049be8e0, 0x1, 0x1)
/home/boger/golang/really.plain/go/src/cmd/compile/internal/ssa/value.go:296 +0x7c
cmd/compile/internal/gc.(*Liveness).regEffects.func1(0x0, 0xc004065ee0, 0x7e6101, 0xc000000020)
/home/boger/golang/really.plain/go/src/cmd/compile/internal/gc/plive.go:446 +0x20c
cmd/compile/internal/gc.(*Liveness).regEffects(0xc006d845a0, 0xc004066500, 0xffffffff)
/home/boger/golang/really.plain/go/src/cmd/compile/internal/gc/plive.go:462 +0xcc
cmd/compile/internal/gc.(*Liveness).prologue(0xc006d845a0)
/home/boger/golang/really.plain/go/src/cmd/compile/internal/gc/plive.go:814 +0x108
cmd/compile/internal/gc.liveness(0xc0077d8e40, 0xc007882580, 0xd)
/home/boger/golang/really.plain/go/src/cmd/compile/internal/gc/plive.go:1714 +0x80
cmd/compile/internal/gc.genssa(0xc007882580, 0xc006892070)
/home/boger/golang/really.plain/go/src/cmd/compile/internal/gc/ssa.go:4774 +0x78
cmd/compile/internal/gc.compileSSA(0xc0024deb00, 0x2)
/home/boger/golang/really.plain/go/src/cmd/compile/internal/gc/pgen.go:267 +0x180
cmd/compile/internal/gc.compileFunctions.func2(0xc0046f1080, 0xc00087bb60, 0x2)
/home/boger/golang/really.plain/go/src/cmd/compile/internal/gc/pgen.go:309 +0x40
created by cmd/compile/internal/gc.compileFunctions
/home/boger/golang/really.plain/go/src/cmd/compile/internal/gc/pgen.go:307 +0x11c
go_test.go:6004: go [test -coverpkg=all x] failed unexpectedly: exit status 2
FAIL
FAIL cmd/go 139.178s
Assuming this is related to the reg changes that have been just added? @aclements