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cmd/compile: ssacheck failure #15279

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bradfitz opened this issue Apr 13, 2016 · 1 comment
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cmd/compile: ssacheck failure #15279

bradfitz opened this issue Apr 13, 2016 · 1 comment
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@bradfitz
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6b85a45 ("cmd/compile: move spills to loop exits when easy") from @dr2chase broke the ssacheck builder:

http://build.golang.org/log/baa00f70c34e41186051cfe90568de3d91f115d7


##### Building packages and commands for linux/amd64.
runtime/internal/sys
runtime/internal/atomic
runtime
# runtime
runtime/hashmap_fast.go:198: internal compiler error: v141, arg 0 of v116, is missing

/tmp/workdir/go/src/cmd/compile/internal/gc/subr.go:158 (0x5fe0ea)
    Fatalf: os.Stdout.Write(debug.Stack())
/tmp/workdir/go/src/cmd/compile/internal/gc/ssa.go:4396 (0x5fc818)
    (*ssaExport).Fatalf: Fatalf(msg, args...)
/tmp/workdir/go/src/cmd/compile/internal/ssa/config.go:187 (0x6b730e)
    (*Config).Fatalf: func (c *Config) Fatalf(line int32, msg string, args ...interface{}) { c.fe.Fatalf(line, msg, args...) }
/tmp/workdir/go/src/cmd/compile/internal/ssa/func.go:393 (0x6c9608)
    (*Func).Fatalf: func (f *Func) Fatalf(msg string, args ...interface{}) { f.Config.Fatalf(f.Entry.Line, msg, args...) }
/tmp/workdir/go/src/cmd/compile/internal/ssa/check.go:274 (0x6af897)
    checkFunc: f.Fatalf("%v, arg %d of %v, is missing", a, i, v)
/tmp/workdir/go/src/cmd/compile/internal/ssa/compile.go:100 (0x6b4490)
    Compile: checkFunc(f)
/tmp/workdir/go/src/cmd/compile/internal/gc/ssa.go:228 (0x5d25a8)
    buildssa: ssa.Compile(s.f)
/tmp/workdir/go/src/cmd/compile/internal/gc/pgen.go:415 (0x59488a)
    compile: ssafn = buildssa(Curfn)
/tmp/workdir/go/src/cmd/compile/internal/gc/dcl.go:1304 (0x527ef4)
    funccompile: compile(n)
/tmp/workdir/go/src/cmd/compile/internal/gc/main.go:466 (0x56d985)
    Main: funccompile(xtop[i])
/tmp/workdir/go/src/cmd/compile/internal/amd64/galign.go:96 (0x43b6fc)
    Main: gc.Main()
/tmp/workdir/go/src/cmd/compile/main.go:33 (0x400d7b)
    main: amd64.Main()
/usr/local/go/src/runtime/proc.go:63 (0x413cc3)
/usr/local/go/src/runtime/asm_amd64.s:2232 (0x439691)

/cc @randall77

@bradfitz bradfitz added this to the Go1.7 milestone Apr 13, 2016
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CL https://golang.org/cl/21995 mentions this issue.

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