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cmd/compile, runtime: runtime.slicebytetostringtmp is NOT emitted for map[string][]byte m[string(byteslice)] in a certain case #47698

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odeke-em opened this issue Aug 14, 2021 · 1 comment
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cmd/compile, runtime: runtime.slicebytetostringtmp is NOT emitted for map[string][]byte m[string(byteslice)] in a certain case #47698

odeke-em opened this issue Aug 14, 2021 · 1 comment
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odeke-em commented Aug 14, 2021 •
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What version of Go are you using (go version)?

$ go version
Go1.14 to Go1.17/1.18

Does this issue reproduce with the latest release?

Yes!

What operating system and processor architecture are you using (go env)?

go env Output
$ go env
GO111MODULE=""
GOARCH="amd64"
GOBIN="/Users/emmanuelodeke/go/bin"
GOCACHE="/Users/emmanuelodeke/Library/Caches/go-build"
GOENV="/Users/emmanuelodeke/Library/Application Support/go/env"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GOINSECURE=""
GONOPROXY=""
GONOSUMDB=""
GOOS="darwin"
GOPATH="/Users/emmanuelodeke/go"
GOPRIVATE=""
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/Users/emmanuelodeke/go/src/go.googlesource.com/go"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/Users/emmanuelodeke/go/src/go.googlesource.com/go/pkg/tool/darwin_amd64"
GCCGO="gccgo"
AR="ar"
CC="clang"
CXX="clang++"
CGO_ENABLED="1"
GOMOD="/Users/emmanuelodeke/go/src/go.googlesource.com/go/src/go.mod"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/v3/7z434qpx5v3bw0wh8h2myfpw0000gn/T/go-build131913713=/tmp/go-build -gno-record-gcc-switches -fno-common"

What did you do?

I continuously profiled a customer's code that my team is auditing and needs to give the OK signal for use this library

If we look at this code https://github.com/celestiaorg/smt/blob/f0f62d60a45dc98ea95933d99505576f1018ae93/mapstore.go#L36-L41

Screen Shot 2021-08-14 at 1 44 59 AM

What did you expect to see?

I'd expect the compiler to detect that hey, there will be a READ-ONLY use of the key thus convert from []byte->slice with zero allocations
but unfortunately this code was showing up hot in our continuous profiler so I took a sample and alas when I experimented with a manual []byte->string zero allocation with

diff --git a/mapstore.go b/mapstore.go
index 5fe381b..ed063fc 100644
--- a/mapstore.go
+++ b/mapstore.go
@@ -2,6 +2,8 @@ package smt
 
 import (
 	"fmt"
+	"reflect"
+	"unsafe"
 )
 
 // MapStore is a key-value store.
@@ -32,9 +34,14 @@ func NewSimpleMap() *SimpleMap {
 	}
 }
 
+func bytesToStr(b []byte) (str string) {
+	hdr := (*reflect.StringHeader)(unsafe.Pointer(&str))
+	return *(*string)(unsafe.Pointer(hdr))
+}
+
 // Get gets the value for a key.
 func (sm *SimpleMap) Get(key []byte) ([]byte, error) {
-	if value, ok := sm.m[string(key)]; ok {
+	if value, ok := sm.m[bytesToStr(key)]; ok {
 		return value, nil
 	}
 	return nil, &InvalidKeyError{Key: key}

the results were shocking

$ benchstat before.txt after.txt 
name                       old time/op    new time/op    delta
SparseMerkleTree_Update-8    22.9µs ± 8%     2.4µs ±12%  -89.65%  (p=0.000 n=20+20)

name                       old alloc/op   new alloc/op   delta
SparseMerkleTree_Update-8    15.8kB ± 0%    12.8kB ± 0%  -19.49%  (p=0.000 n=19+20)

name                       old allocs/op  new allocs/op  delta
SparseMerkleTree_Update-8      59.0 ± 0%       7.0 ± 0%  -88.14%  (p=0.000 n=16+20)
ROUTINE ======================== github.com/celestiaorg/smt.(*SimpleMap).Get in /Users/emmanuelodeke/go/src/github.com/celestiaorg/smt/mapstore.go
      20ms      1.10s (flat, cum)  5.08% of Total
         .          .     31:		m: make(map[string][]byte),
         .          .     32:	}
         .          .     33:}
         .          .     34:
         .          .     35:// Get gets the value for a key.
         .       10ms     36:func (sm *SimpleMap) Get(key []byte) ([]byte, error) {
      10ms      1.08s     37:	if value, ok := sm.m[string(key)]; ok {
      10ms       10ms     38:		return value, nil
         .          .     39:	}
         .          .     40:	return nil, &InvalidKeyError{Key: key}
         .          .     41:}
         .          .     42:
         .          .     43:// Set updates the value for a key.

and on looking further I noticed

ROUTINE ======================== runtime.slicebytetostring in /Users/emmanuelodeke/go/src/go.googlesource.com/go/src/runtime/string.go
      40ms      370ms (flat, cum)  1.71% of Total
         .          .     75:// It is inserted by the compiler into generated code.
         .          .     76:// ptr is a pointer to the first element of the slice;
         .          .     77:// n is the length of the slice.
         .          .     78:// Buf is a fixed-size buffer for the result,
         .          .     79:// it is not nil if the result does not escape.
      20ms       20ms     80:func slicebytetostring(buf *tmpBuf, ptr *byte, n int) (str string) {
         .          .     81:	if n == 0 {
         .          .     82:		// Turns out to be a relatively common case.
         .          .     83:		// Consider that you want to parse out data between parens in "foo()bar",
         .          .     84:		// you find the indices and convert the subslice to string.
         .          .     85:		return ""
         .          .     86:	}
         .          .     87:	if raceenabled {
         .          .     88:		racereadrangepc(unsafe.Pointer(ptr),
         .          .     89:			uintptr(n),
         .          .     90:			getcallerpc(),
         .          .     91:			funcPC(slicebytetostring))
         .          .     92:	}
         .          .     93:	if msanenabled {
         .          .     94:		msanread(unsafe.Pointer(ptr), uintptr(n))
         .          .     95:	}
         .          .     96:	if n == 1 {
         .          .     97:		p := unsafe.Pointer(&staticuint64s[*ptr])
         .          .     98:		if sys.BigEndian {
         .          .     99:			p = add(p, 7)
         .          .    100:		}
         .          .    101:		stringStructOf(&str).str = p
         .          .    102:		stringStructOf(&str).len = 1
         .          .    103:		return
         .          .    104:	}
         .          .    105:
         .          .    106:	var p unsafe.Pointer
      10ms       10ms    107:	if buf != nil && n <= len(buf) {
         .          .    108:		p = unsafe.Pointer(buf)
         .          .    109:	} else {
         .      290ms    110:		p = mallocgc(uintptr(n), nil, false)
         .          .    111:	}
         .          .    112:	stringStructOf(&str).str = p
         .          .    113:	stringStructOf(&str).len = n
         .       40ms    114:	memmove(p, unsafe.Pointer(ptr), uintptr(n))
      10ms       10ms    115:	return
         .          .    116:}
         .          .    117:
         .          .    118:// stringDataOnStack reports whether the string's data is
         .          .    119:// stored on the current goroutine's stack.
         .          .    120:func stringDataOnStack(s string) bool {

However if we walk through code

package main

import (
	"os"
	"runtime/pprof"
)

func main() {
	f, err := os.Create("prof.cpu")
	if err != nil {
		panic(err)
	}
	defer f.Close()

	if err := pprof.StartCPUProfile(f); err != nil {
		panic(err)
	}
	defer pprof.StopCPUProfile()

	m := make(map[string][]byte)
	m["a"] = []byte("d1")
	for i := 0; i < 10; i++ {
		m[string('a'+i)] = []byte{byte(0xFF & i), byte(i)}
	}
	for i := 0; i < 1e9; i++ {
		value, _ := retrieve(m, []byte("b"))
		if len(value) == 100 {
			panic(string(value))
		}
	}
}

func retrieve(m map[string][]byte, key []byte) ([]byte, int) {
	if value, ok := m[string(key)]; ok {
		return value, 0
	}
	return nil, 1
}

we successfully see runtime.slicebytetostringtmp successfully generated by

$ go tool compile -W main.go | grep TMP
.   .   .   .   BYTES2STRTMP l(34) esc(no) tc(1) string
.   .   .   .   BYTES2STRTMP l(34) esc(no) tc(1) string
.   .   .   BYTES2STRTMP l(34) esc(no) tc(1) string
.   .   .   BYTES2STRTMP l(34) esc(no) tc(1) string

which correctly points to line 34
Screen Shot 2021-08-14 at 1 43 44 AM

before walk os.(*File).close
.   AS l(1) tc(1)
.   .   NAME-main..this g(2) l(1) x(0) class(PPARAM) esc(no) tc(1) assigned used PTR-@0
.   .   CONVNOP l(1) tc(1) PTR-@0
.   .   .   DOTPTR l(1) x(0) tc(1) implicit(true) os.file PTR-@0
.   .   .   .   NAME-main..this g(2) l(1) x(0) class(PPARAM) esc(no) tc(1) assigned used PTR-@0

.   RETJMP l(1) tc(1) os.(*file).close
after walk os.(*File).close
.   AS l(1) tc(1) hascall
.   .   NAME-main..this g(2) l(1) x(0) class(PPARAM) esc(no) tc(1) assigned used PTR-@0
.   .   CONVNOP l(1) tc(1) hascall PTR-@0
.   .   .   DOTPTR l(1) x(0) tc(1) implicit(true) hascall os.file PTR-@0
.   .   .   .   NAME-main..this g(2) l(1) x(0) class(PPARAM) esc(no) tc(1) assigned used PTR-@0

.   RETJMP l(1) tc(1) os.(*file).close
enter os.(*File).close
.   AS l(1)
.   .   NAME-main.~r0 g(1) l(240) x(8) class(PPARAMOUT) esc(no) error

before walk main
.   DCL l(9)
.   .   NAME-main.f g(1) l(9) x(0) class(PAUTO) esc(no) tc(1) used PTR-@0

.   DCL l(9)
.   .   NAME-main.err g(2) l(9) x(0) class(PAUTO) esc(no) tc(1) used error

.   DCL l(9)
.   .   NAME-os.name l(295) x(0) class(PAUTO) esc(no) tc(1) assigned used string

.   DCL l(9)
.   .   NAME-main.~R0 l(9) x(0) class(PAUTO) esc(no) tc(1) assigned used PTR-@0

.   DCL l(9)
.   .   NAME-main.~R1 l(9) x(0) class(PAUTO) esc(no) tc(1) assigned used error

.   AS2 l(9) tc(1)
.   AS2-list
.   .   NAME-os.name l(295) x(0) class(PAUTO) esc(no) tc(1) assigned used string
.   AS2-rlist
.   .   LITERAL-"prof.cpu" l(9) tc(1) string

.   AS l(9) tc(1)
.   .   NAME-main.~R0 l(9) x(0) class(PAUTO) esc(no) tc(1) assigned used PTR-@0

.   AS l(9) tc(1)
.   .   NAME-main.~R1 l(9) x(0) class(PAUTO) esc(no) tc(1) assigned used error

.   INLMARK l(+9) x(0)

.   DCL l(9) tc(1)
.   .   NAME-os..autotmp_3 l(296) x(0) class(PAUTO) esc(no) tc(1) assigned used PTR-@0

.   AS l(9) tc(1)
.   .   NAME-os..autotmp_3 l(296) x(0) class(PAUTO) esc(no) tc(1) assigned used PTR-@0

.   DCL l(9) tc(1)
.   .   NAME-os..autotmp_4 l(296) x(0) class(PAUTO) esc(no) tc(1) assigned used error

.   AS l(9) tc(1)
.   .   NAME-os..autotmp_4 l(296) x(0) class(PAUTO) esc(no) tc(1) assigned used error

.   AS l(296) tc(1)
.   .   NAME-main..autotmp_18 l(296) x(0) class(PAUTO) esc(N) tc(1) assigned used PTR-@0

.   AS l(296) tc(1)
.   .   NAME-main..autotmp_19 l(296) x(0) class(PAUTO) esc(N) tc(1) assigned used error

.   AS2FUNC l(296) tc(1)
.   .   CALLFUNC l(296) tc(1) STRUCT-@0
.   .   .   NAME-os.OpenFile l(305) x(0) class(PFUNC) tc(1) used FUNC-@0
.   .   CALLFUNC-list
.   .   .   NAME-os.name l(295) x(0) class(PAUTO) esc(no) tc(1) assigned used string

.   .   .   LITERAL-1538 l(296) tc(1) int

.   .   .   LITERAL-438 l(296) tc(1) os.FileMode
.   AS2FUNC-list
.   .   NAME-main..autotmp_18 l(296) x(0) class(PAUTO) esc(N) tc(1) assigned used PTR-@0

.   .   NAME-main..autotmp_19 l(296) x(0) class(PAUTO) esc(N) tc(1) assigned used error

.   AS2 l(296) tc(1)
.   AS2-list
.   .   NAME-os..autotmp_3 l(296) x(0) class(PAUTO) esc(no) tc(1) assigned used PTR-@0

.   .   NAME-os..autotmp_4 l(296) x(0) class(PAUTO) esc(no) tc(1) assigned used error
.   AS2-rlist
.   .   NAME-main..autotmp_18 l(296) x(0) class(PAUTO) esc(N) tc(1) assigned used PTR-@0

.   .   NAME-main..autotmp_19 l(296) x(0) class(PAUTO) esc(N) tc(1) assigned used error

.   VARKILL l(296) tc(1)
.   .   NAME-main..autotmp_19 l(296) x(0) class(PAUTO) esc(N) tc(1) assigned used error

.   VARKILL l(296) tc(1)
.   .   NAME-main..autotmp_18 l(296) x(0) class(PAUTO) esc(N) tc(1) assigned used PTR-@0

.   AS2 l(9) tc(1)
.   AS2-list
.   .   NAME-main.~R0 l(9) x(0) class(PAUTO) esc(no) tc(1) assigned used PTR-@0

.   .   NAME-main.~R1 l(9) x(0) class(PAUTO) esc(no) tc(1) assigned used error
.   AS2-rlist
.   .   NAME-os..autotmp_3 l(296) x(0) class(PAUTO) esc(no) tc(1) assigned used PTR-@0

.   .   NAME-os..autotmp_4 l(296) x(0) class(PAUTO) esc(no) tc(1) assigned used error

.   GOTO l(9) tc(1) main..i0

.   LABEL l(9) tc(1) main..i0

.   AS2 l(9) colas(true) tc(1)
.   AS2-list
.   .   NAME-main.f g(1) l(9) x(0) class(PAUTO) esc(no) tc(1) used PTR-@0

.   .   NAME-main.err g(2) l(9) x(0) class(PAUTO) esc(no) tc(1) used error
.   AS2-rlist
.   .   CONVNOP l(9) tc(1) hascall PTR-@0
.   .   .   NAME-main.~R0 l(9) x(0) class(PAUTO) esc(no) tc(1) assigned used PTR-@0

.   .   NAME-main.~R1 l(9) x(0) class(PAUTO) esc(no) tc(1) assigned used error

.   IF l(10) tc(1)
.   .   NE l(10) tc(1) bool
.   .   .   NAME-main.err g(2) l(9) x(0) class(PAUTO) esc(no) tc(1) used error
.   .   .   LITERAL-nil tc(1) .nil error
.   IF-body
.   .   PANIC l(11) tc(1)
.   .   .   NAME-main.err g(2) l(9) x(0) class(PAUTO) esc(no) tc(1) used error

.   DEFER l(13) esc(N) tc(1)
.   .   CALLMETH l(13) tc(1) error
.   .   .   DOTMETH l(13) tc(1) os.(*File).Close FUNC-@0
.   .   .   .   NAME-main.f g(1) l(9) x(0) class(PAUTO) esc(no) tc(1) used PTR-@0

.   DCL l(15)
.   .   NAME-main.err g(3) l(15) x(0) class(PAUTO) esc(no) tc(1) used error

.   AS l(15) tc(1)
.   .   NAME-main..autotmp_18 l(296) x(0) class(PAUTO) esc(N) tc(1) assigned used PTR-@0
.   .   NAME-main.f g(1) l(9) x(0) class(PAUTO) esc(no) tc(1) used PTR-@0

.   AS l(15) colas(true) tc(1)
.   .   NAME-main.err g(3) l(15) x(0) class(PAUTO) esc(no) tc(1) used error
.   .   CALLFUNC l(15) tc(1) error
.   .   .   NAME-pprof.StartCPUProfile l(727) x(0) class(PFUNC) tc(1) used FUNC-@0
.   .   CALLFUNC-list
.   .   .   CONVIFACE l(15) tc(1) implicit(true) io.Writer
.   .   .   .   NAME-main..autotmp_18 l(296) x(0) class(PAUTO) esc(N) tc(1) assigned used PTR-@0

.   VARKILL l(15) tc(1)
.   .   NAME-main..autotmp_18 l(296) x(0) class(PAUTO) esc(N) tc(1) assigned used PTR-@0

.   IF l(15) tc(1)
.   .   NE l(15) tc(1) bool
.   .   .   NAME-main.err g(3) l(15) x(0) class(PAUTO) esc(no) tc(1) used error
.   .   .   LITERAL-nil tc(1) .nil error
.   IF-body
.   .   PANIC l(16) tc(1)
.   .   .   NAME-main.err g(3) l(15) x(0) class(PAUTO) esc(no) tc(1) used error

.   DEFER l(18) esc(N) tc(1)
.   .   CALLFUNC l(18) tc(1)
.   .   .   NAME-pprof.StopCPUProfile l(786) x(0) class(PFUNC) tc(1) used FUNC-@0

.   DCL l(20)
.   .   NAME-main.m g(4) l(20) x(0) class(PAUTO) esc(no) tc(1) used MAP-@0

.   AS l(20) colas(true) tc(1)
.   .   NAME-main.m g(4) l(20) x(0) class(PAUTO) esc(no) tc(1) used MAP-@0
.   .   MAKEMAP l(20) esc(no) tc(1) MAP-@0
.   .   .   LITERAL-0 l(20) untyped int

.   AS l(21) tc(1)
.   .   NAME-main..autotmp_20 l(21) x(0) class(PAUTO) esc(N) tc(1) assigned used SLICE-@0
.   .   STR2BYTES l(21) esc(h) tc(1) SLICE-@0
.   .   .   LITERAL-"d1" l(21) tc(1) string

.   AS l(21) tc(1)
.   .   INDEXMAP l(21) tc(1) SLICE-@0
.   .   .   NAME-main.m g(4) l(20) x(0) class(PAUTO) esc(no) tc(1) used MAP-@0
.   .   .   LITERAL-"a" l(21) tc(1) string
.   .   NAME-main..autotmp_20 l(21) x(0) class(PAUTO) esc(N) tc(1) assigned used SLICE-@0

.   VARKILL l(21) tc(1)
.   .   NAME-main..autotmp_20 l(21) x(0) class(PAUTO) esc(N) tc(1) assigned used SLICE-@0

.   DCL l(22)
.   .   NAME-main.i g(5) l(22) x(0) class(PAUTO) esc(no) tc(1) assigned used int

.   AS l(22) colas(true) tc(1)
.   .   NAME-main.i g(5) l(22) x(0) class(PAUTO) esc(no) tc(1) assigned used int
.   .   LITERAL-0 l(22) tc(1) int

.   FOR l(22) tc(1)
.   .   LT l(22) tc(1) bool
.   .   .   NAME-main.i g(5) l(22) x(0) class(PAUTO) esc(no) tc(1) assigned used int
.   .   .   LITERAL-10 l(22) tc(1) int
.   .   BLOCK l(22)
.   .   BLOCK-list
.   .   .   ASOP-ADD l(22) tc(1) implicit(true) int
.   .   .   .   NAME-main.i g(5) l(22) x(0) class(PAUTO) esc(no) tc(1) assigned used int
.   .   .   .   LITERAL-1 l(22) tc(1) int
.   FOR-body
.   .   AS l(23) tc(1)
.   .   .   NAME-main..autotmp_20 l(21) x(0) class(PAUTO) esc(N) tc(1) assigned used SLICE-@0
.   .   .   SLICELIT l(23) esc(h) tc(1) SLICE-@0
.   .   .   .   LITERAL-2 l(23) untyped int
.   .   .   SLICELIT-list
.   .   .   .   CONV l(23) tc(1) byte
.   .   .   .   .   AND l(23) tc(1) int
.   .   .   .   .   .   LITERAL-255 l(23) tc(1) int
.   .   .   .   .   .   NAME-main.i g(5) l(22) x(0) class(PAUTO) esc(no) tc(1) assigned used int

.   .   .   .   CONV l(23) tc(1) byte
.   .   .   .   .   NAME-main.i g(5) l(22) x(0) class(PAUTO) esc(no) tc(1) assigned used int

.   .   AS l(23) tc(1)
.   .   .   INDEXMAP l(23) tc(1) SLICE-@0
.   .   .   .   NAME-main.m g(4) l(20) x(0) class(PAUTO) esc(no) tc(1) used MAP-@0
.   .   .   .   RUNESTR l(23) esc(h) tc(1) string
.   .   .   .   .   ADD l(23) tc(1) int
.   .   .   .   .   .   LITERAL-97 l(23) tc(1) int
.   .   .   .   .   .   NAME-main.i g(5) l(22) x(0) class(PAUTO) esc(no) tc(1) assigned used int
.   .   .   NAME-main..autotmp_20 l(21) x(0) class(PAUTO) esc(N) tc(1) assigned used SLICE-@0

.   .   VARKILL l(23) tc(1)
.   .   .   NAME-main..autotmp_20 l(21) x(0) class(PAUTO) esc(N) tc(1) assigned used SLICE-@0

.   DCL l(25)
.   .   NAME-main.i g(6) l(25) x(0) class(PAUTO) esc(no) tc(1) assigned used int

.   AS l(25) colas(true) tc(1)
.   .   NAME-main.i g(6) l(25) x(0) class(PAUTO) esc(no) tc(1) assigned used int
.   .   LITERAL-0 l(25) tc(1) int

.   FOR l(25) tc(1)
.   .   LT l(25) tc(1) bool
.   .   .   NAME-main.i g(6) l(25) x(0) class(PAUTO) esc(no) tc(1) assigned used int
.   .   .   LITERAL-1000000000 l(25) tc(1) int
.   .   BLOCK l(25)
.   .   BLOCK-list
.   .   .   ASOP-ADD l(25) tc(1) implicit(true) int
.   .   .   .   NAME-main.i g(6) l(25) x(0) class(PAUTO) esc(no) tc(1) assigned used int
.   .   .   .   LITERAL-1 l(25) tc(1) int
.   FOR-body
.   .   DCL l(26)
.   .   .   NAME-main.value g(7) l(26) x(0) class(PAUTO) esc(no) tc(1) used SLICE-@0

.   .   DCL l(26)
.   .   .   NAME-main.m l(33) x(0) class(PAUTO) esc(no) tc(1) assigned used MAP-@0

.   .   DCL l(26)
.   .   .   NAME-main.key l(33) x(0) class(PAUTO) esc(no) tc(1) assigned used SLICE-@0

.   .   DCL l(26)
.   .   .   NAME-main.~r2 l(33) x(0) class(PAUTO) esc(no) tc(1) assigned used SLICE-@0

.   .   DCL l(26)
.   .   .   NAME-main.~r3 l(33) x(0) class(PAUTO) esc(no) tc(1) assigned used int

.   .   AS l(26) tc(1)
.   .   .   NAME-main..autotmp_20 l(21) x(0) class(PAUTO) esc(N) tc(1) assigned used SLICE-@0
.   .   .   STR2BYTES l(26) esc(no) tc(1) SLICE-@0
.   .   .   .   LITERAL-"b" l(26) tc(1) string

.   .   AS2 l(26) tc(1)
.   .   AS2-list
.   .   .   NAME-main.m l(33) x(0) class(PAUTO) esc(no) tc(1) assigned used MAP-@0

.   .   .   NAME-main.key l(33) x(0) class(PAUTO) esc(no) tc(1) assigned used SLICE-@0
.   .   AS2-rlist
.   .   .   NAME-main.m g(4) l(20) x(0) class(PAUTO) esc(no) tc(1) used MAP-@0

.   .   .   NAME-main..autotmp_20 l(21) x(0) class(PAUTO) esc(N) tc(1) assigned used SLICE-@0

.   .   VARKILL l(26) tc(1)
.   .   .   NAME-main..autotmp_20 l(21) x(0) class(PAUTO) esc(N) tc(1) assigned used SLICE-@0

.   .   AS l(26) tc(1)
.   .   .   NAME-main.~r2 l(33) x(0) class(PAUTO) esc(no) tc(1) assigned used SLICE-@0

.   .   AS l(26) tc(1)
.   .   .   NAME-main.~r3 l(33) x(0) class(PAUTO) esc(no) tc(1) assigned used int

.   .   INLMARK l(+26) x(1)

.   .   DCL l(34)
.   .   .   NAME-main.value l(34) x(0) class(PAUTO) esc(no) tc(1) assigned used SLICE-@0

.   .   DCL l(34)
.   .   .   NAME-main.ok l(34) x(0) class(PAUTO) esc(no) tc(1) assigned used bool

.   .   AS l(34) tc(1)
.   .   .   NAME-main..autotmp_20 l(21) x(0) class(PAUTO) esc(N) tc(1) assigned used SLICE-@0

.   .   AS2MAPR l(34) colas(true) tc(1)
.   .   .   INDEXMAP l(34) tc(1) SLICE-@0
.   .   .   .   NAME-main.m l(33) x(0) class(PAUTO) esc(no) tc(1) assigned used MAP-@0
.   .   .   .   BYTES2STRTMP l(34) esc(no) tc(1) string
.   .   .   .   .   NAME-main.key l(33) x(0) class(PAUTO) esc(no) tc(1) assigned used SLICE-@0
.   .   AS2MAPR-list
.   .   .   NAME-main..autotmp_20 l(21) x(0) class(PAUTO) esc(N) tc(1) assigned used SLICE-@0

.   .   .   NAME-main..autotmp_21 l(34) x(0) class(PAUTO) esc(N) tc(1) used bool

.   .   AS l(34) tc(1)
.   .   .   NAME-main.value l(34) x(0) class(PAUTO) esc(no) tc(1) assigned used SLICE-@0
.   .   .   NAME-main..autotmp_20 l(21) x(0) class(PAUTO) esc(N) tc(1) assigned used SLICE-@0

.   .   AS l(34) tc(1)
.   .   .   NAME-main.ok l(34) x(0) class(PAUTO) esc(no) tc(1) assigned used bool
.   .   .   NAME-main..autotmp_21 l(34) x(0) class(PAUTO) esc(N) tc(1) used bool

.   .   VARKILL l(34) tc(1)
.   .   .   NAME-main..autotmp_21 l(34) x(0) class(PAUTO) esc(N) tc(1) used bool

.   .   VARKILL l(34) tc(1)
.   .   .   NAME-main..autotmp_20 l(21) x(0) class(PAUTO) esc(N) tc(1) assigned used SLICE-@0

.   .   IF l(34) tc(1)
.   .   .   NAME-main.ok l(34) x(0) class(PAUTO) esc(no) tc(1) assigned used bool
.   .   IF-body
.   .   .   AS2 l(26) tc(1)
.   .   .   AS2-list
.   .   .   .   NAME-main.~r2 l(33) x(0) class(PAUTO) esc(no) tc(1) assigned used SLICE-@0

.   .   .   .   NAME-main.~r3 l(33) x(0) class(PAUTO) esc(no) tc(1) assigned used int
.   .   .   AS2-rlist
.   .   .   .   NAME-main.value l(34) x(0) class(PAUTO) esc(no) tc(1) assigned used SLICE-@0

.   .   .   .   LITERAL-0 l(35) tc(1) int

.   .   .   GOTO l(26) tc(1) main..i1

.   .   AS2 l(26) tc(1)
.   .   AS2-list
.   .   .   NAME-main.~r2 l(33) x(0) class(PAUTO) esc(no) tc(1) assigned used SLICE-@0

.   .   .   NAME-main.~r3 l(33) x(0) class(PAUTO) esc(no) tc(1) assigned used int
.   .   AS2-rlist
.   .   .   LITERAL-nil tc(1) .nil SLICE-@0

.   .   .   LITERAL-1 l(37) tc(1) int

.   .   GOTO l(26) tc(1) main..i1

.   .   LABEL l(26) tc(1) main..i1

.   .   AS2 l(26) colas(true) tc(1)
.   .   AS2-list
.   .   .   NAME-main.value g(7) l(26) x(0) class(PAUTO) esc(no) tc(1) used SLICE-@0

.   .   .   NAME-_ x(0) tc(1) assigned blank
.   .   AS2-rlist
.   .   .   CONVNOP l(26) tc(1) hascall SLICE-@0
.   .   .   .   NAME-main.~r2 l(33) x(0) class(PAUTO) esc(no) tc(1) assigned used SLICE-@0

.   .   .   NAME-main.~r3 l(33) x(0) class(PAUTO) esc(no) tc(1) assigned used int

.   .   IF l(27) tc(1)
.   .   .   EQ-init
.   .   .   .   AS l(27) tc(1)
.   .   .   .   .   NAME-main..autotmp_22 l(27) x(0) class(PAUTO) esc(N) tc(1) assigned used int
.   .   .   .   .   LEN l(27) tc(1) int
.   .   .   .   .   .   NAME-main.value g(7) l(26) x(0) class(PAUTO) esc(no) tc(1) used SLICE-@0
.   .   .   EQ l(27) tc(1) hascall bool
.   .   .   .   NAME-main..autotmp_22 l(27) x(0) class(PAUTO) esc(N) tc(1) assigned used int
.   .   .   .   LITERAL-100 l(27) tc(1) int
.   .   IF-rlist
.   .   .   VARKILL l(27) tc(1)
.   .   .   .   NAME-main..autotmp_22 l(27) x(0) class(PAUTO) esc(N) tc(1) assigned used int
.   .   IF-body
.   .   .   VARKILL l(27) tc(1)
.   .   .   .   NAME-main..autotmp_22 l(27) x(0) class(PAUTO) esc(N) tc(1) assigned used int

.   .   .   AS l(28) tc(1)
.   .   .   .   NAME-main..autotmp_23 l(28) x(0) class(PAUTO) esc(N) tc(1) assigned used string
.   .   .   .   BYTES2STR l(28) esc(h) tc(1) string
.   .   .   .   .   NAME-main.value g(7) l(26) x(0) class(PAUTO) esc(no) tc(1) used SLICE-@0

.   .   .   PANIC l(28) tc(1)
.   .   .   .   NAME-main..autotmp_23 l(28) x(0) class(PAUTO) esc(N) tc(1) assigned used string

.   .   .   VARKILL l(28) tc(1)
.   .   .   .   NAME-main..autotmp_23 l(28) x(0) class(PAUTO) esc(N) tc(1) assigned used string
after walk main
.   DCL l(9)
.   .   NAME-main.f g(1) l(9) x(0) class(PAUTO) esc(no) tc(1) used PTR-@0

.   DCL l(9)
.   .   NAME-main.err g(2) l(9) x(0) class(PAUTO) esc(no) tc(1) used error

.   DCL l(9)
.   .   NAME-os.name l(295) x(0) class(PAUTO) esc(no) tc(1) assigned used string

.   DCL l(9)
.   .   NAME-main.~R0 l(9) x(0) class(PAUTO) esc(no) tc(1) assigned used PTR-@0

.   DCL l(9)
.   .   NAME-main.~R1 l(9) x(0) class(PAUTO) esc(no) tc(1) assigned used error

.   BLOCK l(9)
.   BLOCK-list
.   .   AS l(9) tc(1)
.   .   .   NAME-os.name l(295) x(0) class(PAUTO) esc(no) tc(1) assigned used string
.   .   .   LITERAL-"prof.cpu" l(9) tc(1) string

.   AS l(9) tc(1)
.   .   NAME-main.~R0 l(9) x(0) class(PAUTO) esc(no) tc(1) assigned used PTR-@0

.   AS l(9) tc(1)
.   .   NAME-main.~R1 l(9) x(0) class(PAUTO) esc(no) tc(1) assigned used error

.   INLMARK l(+9) x(0)

.   DCL l(9) tc(1)
.   .   NAME-os..autotmp_3 l(296) x(0) class(PAUTO) esc(no) tc(1) assigned used PTR-@0

.   AS l(9) tc(1)
.   .   NAME-os..autotmp_3 l(296) x(0) class(PAUTO) esc(no) tc(1) assigned used PTR-@0

.   DCL l(9) tc(1)
.   .   NAME-os..autotmp_4 l(296) x(0) class(PAUTO) esc(no) tc(1) assigned used error

.   AS l(9) tc(1)
.   .   NAME-os..autotmp_4 l(296) x(0) class(PAUTO) esc(no) tc(1) assigned used error

.   AS l(296) tc(1)
.   .   NAME-main..autotmp_18 l(296) x(0) class(PAUTO) esc(N) tc(1) assigned used PTR-@0

.   AS l(296) tc(1)
.   .   NAME-main..autotmp_19 l(296) x(0) class(PAUTO) esc(N) tc(1) assigned used error

.   BLOCK-init
.   .   CALLFUNC l(296) tc(1) hascall STRUCT-@0
.   .   .   NAME-os.OpenFile l(305) x(0) class(PFUNC) tc(1) used FUNC-@0
.   .   CALLFUNC-rlist
.   .   .   NAME-os.name l(295) x(0) class(PAUTO) esc(no) tc(1) assigned used string

.   .   .   LITERAL-1538 l(296) tc(1) int

.   .   .   LITERAL-438 l(296) tc(1) os.FileMode
.   BLOCK l(296) hascall
.   BLOCK-list
.   .   AS l(296) tc(1)
.   .   .   NAME-main..autotmp_18 l(296) x(0) class(PAUTO) esc(N) tc(1) assigned used PTR-@0
.   .   .   RESULT l(296) x(32) tc(1) PTR-@0

.   .   AS l(296) tc(1)
.   .   .   NAME-main..autotmp_19 l(296) x(0) class(PAUTO) esc(N) tc(1) assigned used error
.   .   .   RESULT l(296) x(40) tc(1) error

.   BLOCK l(296)
.   BLOCK-list
.   .   AS l(296) tc(1)
.   .   .   NAME-os..autotmp_3 l(296) x(0) class(PAUTO) esc(no) tc(1) assigned used PTR-@0
.   .   .   NAME-main..autotmp_18 l(296) x(0) class(PAUTO) esc(N) tc(1) assigned used PTR-@0

.   .   AS l(296) tc(1)
.   .   .   NAME-os..autotmp_4 l(296) x(0) class(PAUTO) esc(no) tc(1) assigned used error
.   .   .   NAME-main..autotmp_19 l(296) x(0) class(PAUTO) esc(N) tc(1) assigned used error

.   VARKILL l(296) tc(1)
.   .   NAME-main..autotmp_19 l(296) x(0) class(PAUTO) esc(N) tc(1) assigned used error

.   VARKILL l(296) tc(1)
.   .   NAME-main..autotmp_18 l(296) x(0) class(PAUTO) esc(N) tc(1) assigned used PTR-@0

.   BLOCK l(9)
.   BLOCK-list
.   .   AS l(9) tc(1)
.   .   .   NAME-main.~R0 l(9) x(0) class(PAUTO) esc(no) tc(1) assigned used PTR-@0
.   .   .   NAME-os..autotmp_3 l(296) x(0) class(PAUTO) esc(no) tc(1) assigned used PTR-@0

.   .   AS l(9) tc(1)
.   .   .   NAME-main.~R1 l(9) x(0) class(PAUTO) esc(no) tc(1) assigned used error
.   .   .   NAME-os..autotmp_4 l(296) x(0) class(PAUTO) esc(no) tc(1) assigned used error

.   GOTO l(9) tc(1) main..i0

.   LABEL l(9) tc(1) main..i0

.   BLOCK-init
.   .   AS l(9) tc(1)
.   .   .   NAME-main..autotmp_24 l(9) x(0) class(PAUTO) esc(N) tc(1) assigned used PTR-@0
.   .   .   CONVNOP l(9) tc(1) PTR-@0
.   .   .   .   NAME-main.~R0 l(9) x(0) class(PAUTO) esc(no) tc(1) assigned used PTR-@0
.   BLOCK l(9) hascall
.   BLOCK-list
.   .   AS l(9) tc(1)
.   .   .   NAME-main.f g(1) l(9) x(0) class(PAUTO) esc(no) tc(1) used PTR-@0
.   .   .   NAME-main..autotmp_24 l(9) x(0) class(PAUTO) esc(N) tc(1) assigned used PTR-@0

.   .   AS l(9) tc(1)
.   .   .   NAME-main.err g(2) l(9) x(0) class(PAUTO) esc(no) tc(1) used error
.   .   .   NAME-main.~R1 l(9) x(0) class(PAUTO) esc(no) tc(1) assigned used error

.   IF l(10) tc(1)
.   .   NE l(10) tc(1) bool
.   .   .   NAME-main.err g(2) l(9) x(0) class(PAUTO) esc(no) tc(1) used error
.   .   .   LITERAL-nil tc(1) .nil error
.   IF-body
.   .   CALLFUNC-init
.   .   .   AS l(11)
.   .   .   .   NAME-main..autotmp_25 l(11) x(0) class(PAUTO) esc(N) tc(1) used error
.   .   .   .   NAME-main.err g(2) l(9) x(0) class(PAUTO) esc(no) tc(1) used error

.   .   .   AS l(11)
.   .   .   .   NAME-main..autotmp_26 l(11) x(0) class(PAUTO) esc(N) tc(1) used PTR-@0
.   .   .   .   ITAB l(11) tc(1) PTR-@0
.   .   .   .   .   NAME-main..autotmp_25 l(11) x(0) class(PAUTO) esc(N) tc(1) used error

.   .   .   IF l(11)
.   .   .   .   NE l(11) tc(1) untyped bool
.   .   .   .   .   NAME-main..autotmp_26 l(11) x(0) class(PAUTO) esc(N) tc(1) used PTR-@0
.   .   .   .   .   LITERAL-nil l(11) tc(1) PTR-@0
.   .   .   IF-body
.   .   .   .   AS l(11)
.   .   .   .   .   NAME-main..autotmp_26 l(11) x(0) class(PAUTO) esc(N) tc(1) used PTR-@0
.   .   .   .   .   DOTPTR l(11) x(8) tc(1) bounded PTR-@0
.   .   .   .   .   .   NAME-main..autotmp_26 l(11) x(0) class(PAUTO) esc(N) tc(1) used PTR-@0
.   .   CALLFUNC l(11) tc(1) hascall
.   .   .   NAME-runtime.gopanic x(0) class(PFUNC) tc(1) used FUNC-@0
.   .   CALLFUNC-rlist
.   .   .   EFACE l(11) tc(1) INTER-@0
.   .   .   .   NAME-main..autotmp_26 l(11) x(0) class(PAUTO) esc(N) tc(1) used PTR-@0
.   .   .   .   IDATA l(11) tc(1) PTR-@0
.   .   .   .   .   NAME-main..autotmp_25 l(11) x(0) class(PAUTO) esc(N) tc(1) used error

.   DEFER l(13) esc(N) tc(1)
.   .   CALLMETH l(13) tc(1) hascall error
.   .   .   DOTMETH l(13) tc(1) os.(*File).Close FUNC-@0
.   .   CALLMETH-rlist
.   .   .   NAME-main.f g(1) l(9) x(0) class(PAUTO) esc(no) tc(1) used PTR-@0

.   DCL l(15)
.   .   NAME-main.err g(3) l(15) x(0) class(PAUTO) esc(no) tc(1) used error

.   AS l(15) tc(1)
.   .   NAME-main..autotmp_18 l(296) x(0) class(PAUTO) esc(N) tc(1) assigned used PTR-@0
.   .   NAME-main.f g(1) l(9) x(0) class(PAUTO) esc(no) tc(1) used PTR-@0

.   AS l(15) colas(true) tc(1) hascall
.   .   NAME-main.err g(3) l(15) x(0) class(PAUTO) esc(no) tc(1) used error
.   .   CALLFUNC l(15) tc(1) hascall error
.   .   .   NAME-pprof.StartCPUProfile l(727) x(0) class(PFUNC) tc(1) used FUNC-@0
.   .   CALLFUNC-rlist
.   .   .   EFACE l(15) tc(1) io.Writer
.   .   .   .   ADDR l(15) tc(1) PTR-@0
.   .   .   .   .   NAME-go.itab.*os.File,io.Writer l(15) x(0) class(PEXTERN) tc(1) uint8
.   .   .   .   NAME-main..autotmp_18 l(296) x(0) class(PAUTO) esc(N) tc(1) assigned used PTR-@0

.   VARKILL l(15) tc(1)
.   .   NAME-main..autotmp_18 l(296) x(0) class(PAUTO) esc(N) tc(1) assigned used PTR-@0

.   IF l(15) tc(1)
.   .   NE l(15) tc(1) bool
.   .   .   NAME-main.err g(3) l(15) x(0) class(PAUTO) esc(no) tc(1) used error
.   .   .   LITERAL-nil tc(1) .nil error
.   IF-body
.   .   CALLFUNC-init
.   .   .   AS l(16)
.   .   .   .   NAME-main..autotmp_27 l(16) x(0) class(PAUTO) esc(N) tc(1) used error
.   .   .   .   NAME-main.err g(3) l(15) x(0) class(PAUTO) esc(no) tc(1) used error

.   .   .   AS l(16)
.   .   .   .   NAME-main..autotmp_28 l(16) x(0) class(PAUTO) esc(N) tc(1) used PTR-@0
.   .   .   .   ITAB l(16) tc(1) PTR-@0
.   .   .   .   .   NAME-main..autotmp_27 l(16) x(0) class(PAUTO) esc(N) tc(1) used error

.   .   .   IF l(16)
.   .   .   .   NE l(16) tc(1) untyped bool
.   .   .   .   .   NAME-main..autotmp_28 l(16) x(0) class(PAUTO) esc(N) tc(1) used PTR-@0
.   .   .   .   .   LITERAL-nil l(16) tc(1) PTR-@0
.   .   .   IF-body
.   .   .   .   AS l(16)
.   .   .   .   .   NAME-main..autotmp_28 l(16) x(0) class(PAUTO) esc(N) tc(1) used PTR-@0
.   .   .   .   .   DOTPTR l(16) x(8) tc(1) bounded PTR-@0
.   .   .   .   .   .   NAME-main..autotmp_28 l(16) x(0) class(PAUTO) esc(N) tc(1) used PTR-@0
.   .   CALLFUNC l(16) tc(1) hascall
.   .   .   NAME-runtime.gopanic x(0) class(PFUNC) tc(1) used FUNC-@0
.   .   CALLFUNC-rlist
.   .   .   EFACE l(16) tc(1) INTER-@0
.   .   .   .   NAME-main..autotmp_28 l(16) x(0) class(PAUTO) esc(N) tc(1) used PTR-@0
.   .   .   .   IDATA l(16) tc(1) PTR-@0
.   .   .   .   .   NAME-main..autotmp_27 l(16) x(0) class(PAUTO) esc(N) tc(1) used error

.   DEFER l(18) esc(N) tc(1)
.   .   CALLFUNC l(18) tc(1) hascall
.   .   .   NAME-pprof.StopCPUProfile l(786) x(0) class(PFUNC) tc(1) used FUNC-@0

.   DCL l(20)
.   .   NAME-main.m g(4) l(20) x(0) class(PAUTO) esc(no) tc(1) used MAP-@0

.   AS-init
.   .   AS l(20) tc(1)
.   .   .   NAME-main..autotmp_29 l(20) x(0) class(PAUTO) esc(N) tc(1) addrtaken assigned used STRUCT-@0

.   .   AS l(20) tc(1)
.   .   .   NAME-main..autotmp_30 l(20) x(0) class(PAUTO) esc(N) tc(1) addrtaken assigned used STRUCT-@0

.   .   AS l(20) tc(1)
.   .   .   DOTPTR l(20) x(16) tc(1) .buckets PTR-@0
.   .   .   .   ADDR l(20) tc(1) PTR-@0
.   .   .   .   .   NAME-main..autotmp_29 l(20) x(0) class(PAUTO) esc(N) tc(1) addrtaken assigned used STRUCT-@0
.   .   .   ADDR l(20) tc(1) PTR-@0
.   .   .   .   NAME-main..autotmp_30 l(20) x(0) class(PAUTO) esc(N) tc(1) addrtaken assigned used STRUCT-@0

.   .   AS l(20) tc(1)
.   .   .   NAME-main..autotmp_31 l(20) x(0) class(PAUTO) esc(N) tc(1) assigned used PTR-@0
.   .   .   ADDR l(20) tc(1) PTR-@0
.   .   .   .   NAME-main..autotmp_29 l(20) x(0) class(PAUTO) esc(N) tc(1) addrtaken assigned used STRUCT-@0

.   .   AS l(20) tc(1) hascall
.   .   .   DOTPTR l(20) x(12) tc(1) hascall .hash0 uint32
.   .   .   .   NAME-main..autotmp_31 l(20) x(0) class(PAUTO) esc(N) tc(1) assigned used PTR-@0
.   .   .   CALLFUNC l(20) tc(1) hascall uint32
.   .   .   .   NAME-runtime.fastrand x(0) class(PFUNC) tc(1) used FUNC-@0
.   AS l(20) colas(true) tc(1) hascall
.   .   NAME-main.m g(4) l(20) x(0) class(PAUTO) esc(no) tc(1) used MAP-@0
.   .   CONVNOP l(20) tc(1) MAP-@0
.   .   .   ADDR l(20) tc(1) PTR-@0
.   .   .   .   NAME-main..autotmp_29 l(20) x(0) class(PAUTO) esc(N) tc(1) addrtaken assigned used STRUCT-@0

.   AS-init
.   .   AS l(21) tc(1)
.   .   .   NAME-main..autotmp_32 l(21) x(0) class(PAUTO) esc(N) tc(1) assigned used PTR-@0
.   .   .   NEWOBJ l(21) tc(1) nonnil PTR-@0
.   .   .   .   ADDR l(21) tc(1) PTR-@0
.   .   .   .   .   NAME-type.[2]uint8 x(0) class(PEXTERN) tc(1) uint8

.   .   AS l(21) tc(1) hascall
.   .   .   DEREF l(21) tc(1) hascall ARRAY-@0
.   .   .   .   NAME-main..autotmp_32 l(21) x(0) class(PAUTO) esc(N) tc(1) assigned used PTR-@0
.   .   .   DEREF l(21) tc(1) hascall ARRAY-@0
.   .   .   .   CONVNOP l(21) tc(1) PTR-@0
.   .   .   .   .   SPTR l(21) tc(1) PTR-@0
.   .   .   .   .   .   LITERAL-"d1" l(21) tc(1) string
.   AS l(21) tc(1) hascall
.   .   NAME-main..autotmp_20 l(21) x(0) class(PAUTO) esc(N) tc(1) assigned used SLICE-@0
.   .   SLICEARR l(21) esc(h) tc(1) hascall SLICE-@0
.   .   .   NAME-main..autotmp_32 l(21) x(0) class(PAUTO) esc(N) tc(1) assigned used PTR-@0

.   AS-init
.   .   AS l(21) tc(1) hascall
.   .   .   NAME-main..autotmp_33 l(21) x(0) class(PAUTO) esc(N) tc(1) assigned used PTR-@0
.   .   .   CALLFUNC l(21) tc(1) nonnil hascall PTR-@0
.   .   .   .   NAME-runtime.mapassign_faststr x(0) class(PFUNC) tc(1) used FUNC-@0
.   .   .   CALLFUNC-rlist
.   .   .   .   ADDR l(21) tc(1) PTR-@0
.   .   .   .   .   NAME-type.map[string][]uint8 x(0) class(PEXTERN) tc(1) uint8

.   .   .   .   NAME-main.m g(4) l(20) x(0) class(PAUTO) esc(no) tc(1) used MAP-@0

.   .   .   .   LITERAL-"a" l(21) tc(1) string
.   AS l(21) tc(1) hascall
.   .   DEREF l(21) tc(1) hascall SLICE-@0
.   .   .   NAME-main..autotmp_33 l(21) x(0) class(PAUTO) esc(N) tc(1) assigned used PTR-@0
.   .   NAME-main..autotmp_20 l(21) x(0) class(PAUTO) esc(N) tc(1) assigned used SLICE-@0

.   VARKILL l(21) tc(1)
.   .   NAME-main..autotmp_20 l(21) x(0) class(PAUTO) esc(N) tc(1) assigned used SLICE-@0

.   DCL l(22)
.   .   NAME-main.i g(5) l(22) x(0) class(PAUTO) esc(no) tc(1) assigned used int

.   AS l(22) colas(true) tc(1)
.   .   NAME-main.i g(5) l(22) x(0) class(PAUTO) esc(no) tc(1) assigned used int
.   .   LITERAL-0 l(22) tc(1) int

.   FOR l(22) tc(1)
.   .   LT l(22) tc(1) bool
.   .   .   NAME-main.i g(5) l(22) x(0) class(PAUTO) esc(no) tc(1) assigned used int
.   .   .   LITERAL-10 l(22) tc(1) int
.   .   BLOCK l(22)
.   .   BLOCK-list
.   .   .   AS l(22) tc(1) implicit(true) int
.   .   .   .   NAME-main.i g(5) l(22) x(0) class(PAUTO) esc(no) tc(1) assigned used int
.   .   .   .   ADD l(22) tc(1) int
.   .   .   .   .   NAME-main.i g(5) l(22) x(0) class(PAUTO) esc(no) tc(1) assigned used int
.   .   .   .   .   LITERAL-1 l(22) tc(1) int
.   FOR-body
.   .   EMPTY-init
.   .   .   AS l(23) tc(1)
.   .   .   .   NAME-main..autotmp_34 l(23) x(0) class(PAUTO) esc(N) tc(1) assigned used PTR-@0
.   .   .   .   NEWOBJ l(23) tc(1) nonnil PTR-@0
.   .   .   .   .   ADDR l(23) tc(1) PTR-@0
.   .   .   .   .   .   NAME-type.[2]uint8 x(0) class(PEXTERN) tc(1) uint8

.   .   .   BLOCK l(23)
.   .   .   BLOCK-list
.   .   .   .   AS l(23) tc(1) hascall
.   .   .   .   .   INDEX l(23) tc(1) bounded hascall byte
.   .   .   .   .   .   DEREF l(23) tc(1) implicit(true) hascall ARRAY-@0
.   .   .   .   .   .   .   NAME-main..autotmp_34 l(23) x(0) class(PAUTO) esc(N) tc(1) assigned used PTR-@0
.   .   .   .   .   .   LITERAL-0 l(23) tc(1) int
.   .   .   .   .   CONV l(23) tc(1) byte
.   .   .   .   .   .   AND l(23) tc(1) int
.   .   .   .   .   .   .   LITERAL-255 l(23) tc(1) int
.   .   .   .   .   .   .   NAME-main.i g(5) l(22) x(0) class(PAUTO) esc(no) tc(1) assigned used int

.   .   .   BLOCK l(23)
.   .   .   BLOCK-list
.   .   .   .   AS l(23) tc(1) hascall
.   .   .   .   .   INDEX l(23) tc(1) bounded hascall byte
.   .   .   .   .   .   DEREF l(23) tc(1) implicit(true) hascall ARRAY-@0
.   .   .   .   .   .   .   NAME-main..autotmp_34 l(23) x(0) class(PAUTO) esc(N) tc(1) assigned used PTR-@0
.   .   .   .   .   .   LITERAL-1 l(23) tc(1) int
.   .   .   .   .   CONV l(23) tc(1) byte
.   .   .   .   .   .   NAME-main.i g(5) l(22) x(0) class(PAUTO) esc(no) tc(1) assigned used int

.   .   .   BLOCK l(23)
.   .   .   BLOCK-list
.   .   .   .   AS l(23) tc(1) hascall
.   .   .   .   .   NAME-main..autotmp_20 l(21) x(0) class(PAUTO) esc(N) tc(1) assigned used SLICE-@0
.   .   .   .   .   SLICEARR l(23) tc(1) hascall SLICE-@0
.   .   .   .   .   .   NAME-main..autotmp_34 l(23) x(0) class(PAUTO) esc(N) tc(1) assigned used PTR-@0
.   .   EMPTY l(23) tc(1) hascall
.   .   .   NAME-main..autotmp_20 l(21) x(0) class(PAUTO) esc(N) tc(1) assigned used SLICE-@0

.   .   AS-init
.   .   .   AS l(23) tc(1) hascall
.   .   .   .   NAME-main..autotmp_36 l(23) x(0) class(PAUTO) esc(N) tc(1) assigned used PTR-@0
.   .   .   .   CALLFUNC l(23) tc(1) nonnil hascall PTR-@0
.   .   .   .   .   NAME-runtime.mapassign_faststr x(0) class(PFUNC) tc(1) used FUNC-@0
.   .   .   .   CALLFUNC-list
.   .   .   .   .   AS l(23) tc(1) hascall
.   .   .   .   .   .   NAME-main..autotmp_35 l(23) x(0) class(PAUTO) esc(N) used string
.   .   .   .   .   .   CALLFUNC l(23) tc(1) hascall string
.   .   .   .   .   .   .   NAME-runtime.intstring x(0) class(PFUNC) tc(1) used FUNC-@0
.   .   .   .   .   .   CALLFUNC-rlist
.   .   .   .   .   .   .   LITERAL-nil l(23) tc(1) PTR-@0

.   .   .   .   .   .   .   CONVNOP l(23) tc(1) int64
.   .   .   .   .   .   .   .   ADD l(23) tc(1) int
.   .   .   .   .   .   .   .   .   LITERAL-97 l(23) tc(1) int
.   .   .   .   .   .   .   .   .   NAME-main.i g(5) l(22) x(0) class(PAUTO) esc(no) tc(1) assigned used int
.   .   .   .   CALLFUNC-rlist
.   .   .   .   .   ADDR l(23) tc(1) PTR-@0
.   .   .   .   .   .   NAME-type.map[string][]uint8 x(0) class(PEXTERN) tc(1) uint8

.   .   .   .   .   NAME-main.m g(4) l(20) x(0) class(PAUTO) esc(no) tc(1) used MAP-@0

.   .   .   .   .   NAME-main..autotmp_35 l(23) x(0) class(PAUTO) esc(N) used string
.   .   AS l(23) tc(1) hascall
.   .   .   DEREF l(23) tc(1) hascall SLICE-@0
.   .   .   .   NAME-main..autotmp_36 l(23) x(0) class(PAUTO) esc(N) tc(1) assigned used PTR-@0
.   .   .   NAME-main..autotmp_20 l(21) x(0) class(PAUTO) esc(N) tc(1) assigned used SLICE-@0

.   .   VARKILL l(23) tc(1)
.   .   .   NAME-main..autotmp_20 l(21) x(0) class(PAUTO) esc(N) tc(1) assigned used SLICE-@0

.   DCL l(25)
.   .   NAME-main.i g(6) l(25) x(0) class(PAUTO) esc(no) tc(1) assigned used int

.   AS l(25) colas(true) tc(1)
.   .   NAME-main.i g(6) l(25) x(0) class(PAUTO) esc(no) tc(1) assigned used int
.   .   LITERAL-0 l(25) tc(1) int

.   FOR l(25) tc(1)
.   .   LT l(25) tc(1) bool
.   .   .   NAME-main.i g(6) l(25) x(0) class(PAUTO) esc(no) tc(1) assigned used int
.   .   .   LITERAL-1000000000 l(25) tc(1) int
.   .   BLOCK l(25)
.   .   BLOCK-list
.   .   .   AS l(25) tc(1) implicit(true) int
.   .   .   .   NAME-main.i g(6) l(25) x(0) class(PAUTO) esc(no) tc(1) assigned used int
.   .   .   .   ADD l(25) tc(1) int
.   .   .   .   .   NAME-main.i g(6) l(25) x(0) class(PAUTO) esc(no) tc(1) assigned used int
.   .   .   .   .   LITERAL-1 l(25) tc(1) int
.   FOR-body
.   .   DCL l(26)
.   .   .   NAME-main.value g(7) l(26) x(0) class(PAUTO) esc(no) tc(1) used SLICE-@0

.   .   DCL l(26)
.   .   .   NAME-main.m l(33) x(0) class(PAUTO) esc(no) tc(1) assigned used MAP-@0

.   .   DCL l(26)
.   .   .   NAME-main.key l(33) x(0) class(PAUTO) esc(no) tc(1) assigned used SLICE-@0

.   .   DCL l(26)
.   .   .   NAME-main.~r2 l(33) x(0) class(PAUTO) esc(no) tc(1) assigned used SLICE-@0

.   .   DCL l(26)
.   .   .   NAME-main.~r3 l(33) x(0) class(PAUTO) esc(no) tc(1) assigned used int

.   .   AS-init
.   .   .   AS l(26) tc(1)
.   .   .   .   NAME-main..autotmp_38 l(26) x(0) class(PAUTO) esc(N) tc(1) assigned used PTR-@0
.   .   .   .   ADDR l(26) tc(1) PTR-@0
.   .   .   .   .   NAME-main..autotmp_37 l(26) x(0) class(PAUTO) esc(N) tc(1) addrtaken used ARRAY-@0

.   .   .   AS l(26) tc(1) hascall
.   .   .   .   DEREF l(26) tc(1) hascall ARRAY-@0
.   .   .   .   .   NAME-main..autotmp_38 l(26) x(0) class(PAUTO) esc(N) tc(1) assigned used PTR-@0
.   .   .   .   DEREF l(26) tc(1) hascall ARRAY-@0
.   .   .   .   .   CONVNOP l(26) tc(1) PTR-@0
.   .   .   .   .   .   SPTR l(26) tc(1) PTR-@0
.   .   .   .   .   .   .   LITERAL-"b" l(26) tc(1) string
.   .   AS l(26) tc(1) hascall
.   .   .   NAME-main..autotmp_20 l(21) x(0) class(PAUTO) esc(N) tc(1) assigned used SLICE-@0
.   .   .   SLICEARR l(26) esc(no) tc(1) hascall SLICE-@0
.   .   .   .   NAME-main..autotmp_38 l(26) x(0) class(PAUTO) esc(N) tc(1) assigned used PTR-@0

.   .   BLOCK l(26)
.   .   BLOCK-list
.   .   .   AS l(26) tc(1)
.   .   .   .   NAME-main.m l(33) x(0) class(PAUTO) esc(no) tc(1) assigned used MAP-@0
.   .   .   .   NAME-main.m g(4) l(20) x(0) class(PAUTO) esc(no) tc(1) used MAP-@0

.   .   .   AS l(26) tc(1)
.   .   .   .   NAME-main.key l(33) x(0) class(PAUTO) esc(no) tc(1) assigned used SLICE-@0
.   .   .   .   NAME-main..autotmp_20 l(21) x(0) class(PAUTO) esc(N) tc(1) assigned used SLICE-@0

.   .   VARKILL l(26) tc(1)
.   .   .   NAME-main..autotmp_20 l(21) x(0) class(PAUTO) esc(N) tc(1) assigned used SLICE-@0

.   .   AS l(26) tc(1)
.   .   .   NAME-main.~r2 l(33) x(0) class(PAUTO) esc(no) tc(1) assigned used SLICE-@0

.   .   AS l(26) tc(1)
.   .   .   NAME-main.~r3 l(33) x(0) class(PAUTO) esc(no) tc(1) assigned used int

.   .   INLMARK l(+26) x(1)

.   .   DCL l(34)
.   .   .   NAME-main.value l(34) x(0) class(PAUTO) esc(no) tc(1) assigned used SLICE-@0

.   .   DCL l(34)
.   .   .   NAME-main.ok l(34) x(0) class(PAUTO) esc(no) tc(1) assigned used bool

.   .   AS l(34) tc(1)
.   .   .   NAME-main..autotmp_20 l(21) x(0) class(PAUTO) esc(N) tc(1) assigned used SLICE-@0

.   .   AS-init
.   .   .   CALLFUNC l(34) tc(1) hascall STRUCT-@0
.   .   .   .   NAME-runtime.mapaccess2_faststr x(0) class(PFUNC) tc(1) used FUNC-@0
.   .   .   CALLFUNC-rlist
.   .   .   .   ADDR l(34) tc(1) PTR-@0
.   .   .   .   .   NAME-type.map[string][]uint8 x(0) class(PEXTERN) tc(1) uint8

.   .   .   .   NAME-main.m l(33) x(0) class(PAUTO) esc(no) tc(1) assigned used MAP-@0

.   .   .   .   BYTES2STRTMP l(34) esc(no) tc(1) string
.   .   .   .   .   NAME-main.key l(33) x(0) class(PAUTO) esc(no) tc(1) assigned used SLICE-@0

.   .   .   BLOCK l(34)
.   .   .   BLOCK-list
.   .   .   .   AS l(34) tc(1)
.   .   .   .   .   NAME-main..autotmp_39 l(34) x(0) class(PAUTO) esc(N) tc(1) nonnil used PTR-@0
.   .   .   .   .   RESULT l(34) x(32) tc(1) PTR-@0

.   .   .   .   AS l(34) tc(1)
.   .   .   .   .   NAME-main..autotmp_21 l(34) x(0) class(PAUTO) esc(N) tc(1) used bool
.   .   .   .   .   RESULT l(34) x(40) tc(1) bool
.   .   AS l(34) tc(1) hascall
.   .   .   NAME-main..autotmp_20 l(21) x(0) class(PAUTO) esc(N) tc(1) assigned used SLICE-@0
.   .   .   DEREF l(34) tc(1) hascall SLICE-@0
.   .   .   .   NAME-main..autotmp_39 l(34) x(0) class(PAUTO) esc(N) tc(1) nonnil used PTR-@0

.   .   AS l(34) tc(1)
.   .   .   NAME-main.value l(34) x(0) class(PAUTO) esc(no) tc(1) assigned used SLICE-@0
.   .   .   NAME-main..autotmp_20 l(21) x(0) class(PAUTO) esc(N) tc(1) assigned used SLICE-@0

.   .   AS l(34) tc(1)
.   .   .   NAME-main.ok l(34) x(0) class(PAUTO) esc(no) tc(1) assigned used bool
.   .   .   NAME-main..autotmp_21 l(34) x(0) class(PAUTO) esc(N) tc(1) used bool

.   .   VARKILL l(34) tc(1)
.   .   .   NAME-main..autotmp_21 l(34) x(0) class(PAUTO) esc(N) tc(1) used bool

.   .   VARKILL l(34) tc(1)
.   .   .   NAME-main..autotmp_20 l(21) x(0) class(PAUTO) esc(N) tc(1) assigned used SLICE-@0

.   .   IF l(34) tc(1)
.   .   .   NAME-main.ok l(34) x(0) class(PAUTO) esc(no) tc(1) assigned used bool
.   .   IF-body
.   .   .   BLOCK l(26)
.   .   .   BLOCK-list
.   .   .   .   AS l(26) tc(1)
.   .   .   .   .   NAME-main.~r2 l(33) x(0) class(PAUTO) esc(no) tc(1) assigned used SLICE-@0
.   .   .   .   .   NAME-main.value l(34) x(0) class(PAUTO) esc(no) tc(1) assigned used SLICE-@0

.   .   .   .   AS l(26) tc(1)
.   .   .   .   .   NAME-main.~r3 l(33) x(0) class(PAUTO) esc(no) tc(1) assigned used int
.   .   .   .   .   LITERAL-0 l(35) tc(1) int

.   .   .   GOTO l(26) tc(1) main..i1

.   .   BLOCK l(26)
.   .   BLOCK-list
.   .   .   AS l(26) tc(1)
.   .   .   .   NAME-main.~r2 l(33) x(0) class(PAUTO) esc(no) tc(1) assigned used SLICE-@0
.   .   .   .   LITERAL-nil tc(1) .nil SLICE-@0

.   .   .   AS l(26) tc(1)
.   .   .   .   NAME-main.~r3 l(33) x(0) class(PAUTO) esc(no) tc(1) assigned used int
.   .   .   .   LITERAL-1 l(37) tc(1) int

.   .   GOTO l(26) tc(1) main..i1

.   .   LABEL l(26) tc(1) main..i1

.   .   BLOCK-init
.   .   .   AS l(26) tc(1)
.   .   .   .   NAME-main..autotmp_40 l(26) x(0) class(PAUTO) esc(N) tc(1) assigned used SLICE-@0
.   .   .   .   CONVNOP l(26) tc(1) SLICE-@0
.   .   .   .   .   NAME-main.~r2 l(33) x(0) class(PAUTO) esc(no) tc(1) assigned used SLICE-@0
.   .   BLOCK l(26) hascall
.   .   BLOCK-list
.   .   .   AS l(26) tc(1)
.   .   .   .   NAME-main.value g(7) l(26) x(0) class(PAUTO) esc(no) tc(1) used SLICE-@0
.   .   .   .   NAME-main..autotmp_40 l(26) x(0) class(PAUTO) esc(N) tc(1) assigned used SLICE-@0

.   .   .   AS l(26) tc(1)
.   .   .   .   NAME-_ x(0) tc(1) assigned blank
.   .   .   .   NAME-main.~r3 l(33) x(0) class(PAUTO) esc(no) tc(1) assigned used int

.   .   IF-init
.   .   .   AS l(27) tc(1)
.   .   .   .   NAME-main..autotmp_22 l(27) x(0) class(PAUTO) esc(N) tc(1) assigned used int
.   .   .   .   LEN l(27) tc(1) int
.   .   .   .   .   NAME-main.value g(7) l(26) x(0) class(PAUTO) esc(no) tc(1) used SLICE-@0
.   .   IF l(27) tc(1)
.   .   .   EQ l(27) tc(1) bool
.   .   .   .   NAME-main..autotmp_22 l(27) x(0) class(PAUTO) esc(N) tc(1) assigned used int
.   .   .   .   LITERAL-100 l(27) tc(1) int
.   .   IF-rlist
.   .   .   VARKILL l(27) tc(1)
.   .   .   .   NAME-main..autotmp_22 l(27) x(0) class(PAUTO) esc(N) tc(1) assigned used int
.   .   IF-body
.   .   .   VARKILL l(27) tc(1)
.   .   .   .   NAME-main..autotmp_22 l(27) x(0) class(PAUTO) esc(N) tc(1) assigned used int

.   .   .   AS l(28) tc(1) hascall
.   .   .   .   NAME-main..autotmp_23 l(28) x(0) class(PAUTO) esc(N) tc(1) assigned used string
.   .   .   .   CALLFUNC l(28) tc(1) hascall string
.   .   .   .   .   NAME-runtime.slicebytetostring x(0) class(PFUNC) tc(1) used FUNC-@0
.   .   .   .   CALLFUNC-rlist
.   .   .   .   .   LITERAL-nil l(28) tc(1) PTR-@0

.   .   .   .   .   NAME-main.value g(7) l(26) x(0) class(PAUTO) esc(no) tc(1) used SLICE-@0

.   .   .   CALLFUNC-init
.   .   .   .   AS l(28) tc(1) hascall
.   .   .   .   .   NAME-main..autotmp_41 l(28) x(0) class(PAUTO) esc(N) tc(1) assigned used UNSAFEPTR-@0
.   .   .   .   .   CALLFUNC l(28) tc(1) hascall UNSAFEPTR-@0
.   .   .   .   .   .   NAME-runtime.convTstring x(0) class(PFUNC) tc(1) used FUNC-@0
.   .   .   .   .   CALLFUNC-rlist
.   .   .   .   .   .   NAME-main..autotmp_23 l(28) x(0) class(PAUTO) esc(N) tc(1) assigned used string
.   .   .   CALLFUNC l(28) tc(1) hascall
.   .   .   .   NAME-runtime.gopanic x(0) class(PFUNC) tc(1) used FUNC-@0
.   .   .   CALLFUNC-rlist
.   .   .   .   EFACE l(28) tc(1) INTER-@0
.   .   .   .   .   ADDR l(28) tc(1) PTR-@0
.   .   .   .   .   .   NAME-type.string x(0) class(PEXTERN) tc(1) uint8
.   .   .   .   .   NAME-main..autotmp_41 l(28) x(0) class(PAUTO) esc(N) tc(1) assigned used UNSAFEPTR-@0

.   .   .   VARKILL l(28) tc(1)
.   .   .   .   NAME-main..autotmp_23 l(28) x(0) class(PAUTO) esc(N) tc(1) assigned used string

before walk retrieve
.   DCL l(34)
.   .   NAME-main.value g(5) l(34) x(0) class(PAUTO) esc(no) tc(1) assigned used SLICE-@0

.   DCL l(34)
.   .   NAME-main.ok g(6) l(34) x(0) class(PAUTO) esc(no) tc(1) assigned used bool

.   AS l(34) tc(1)
.   .   NAME-main..autotmp_6 l(34) x(0) class(PAUTO) esc(N) tc(1) assigned used SLICE-@0

.   AS2MAPR l(34) colas(true) tc(1)
.   .   INDEXMAP l(34) tc(1) SLICE-@0
.   .   .   NAME-main.m g(3) l(33) x(0) class(PPARAM) esc(no) tc(1) used MAP-@0
.   .   .   BYTES2STRTMP l(34) esc(no) tc(1) string
.   .   .   .   NAME-main.key g(4) l(33) x(8) class(PPARAM) esc(no) tc(1) used SLICE-@0
.   AS2MAPR-list
.   .   NAME-main..autotmp_6 l(34) x(0) class(PAUTO) esc(N) tc(1) assigned used SLICE-@0

.   .   NAME-main..autotmp_7 l(34) x(0) class(PAUTO) esc(N) tc(1) used bool

.   AS l(34) tc(1)
.   .   NAME-main.value g(5) l(34) x(0) class(PAUTO) esc(no) tc(1) assigned used SLICE-@0
.   .   NAME-main..autotmp_6 l(34) x(0) class(PAUTO) esc(N) tc(1) assigned used SLICE-@0

.   AS l(34) tc(1)
.   .   NAME-main.ok g(6) l(34) x(0) class(PAUTO) esc(no) tc(1) assigned used bool
.   .   NAME-main..autotmp_7 l(34) x(0) class(PAUTO) esc(N) tc(1) used bool

.   VARKILL l(34) tc(1)
.   .   NAME-main..autotmp_7 l(34) x(0) class(PAUTO) esc(N) tc(1) used bool

.   VARKILL l(34) tc(1)
.   .   NAME-main..autotmp_6 l(34) x(0) class(PAUTO) esc(N) tc(1) assigned used SLICE-@0

.   IF l(34) tc(1)
.   .   NAME-main.ok g(6) l(34) x(0) class(PAUTO) esc(no) tc(1) assigned used bool
.   IF-body
.   .   RETURN l(35) tc(1)
.   .   RETURN-list
.   .   .   NAME-main.value g(5) l(34) x(0) class(PAUTO) esc(no) tc(1) assigned used SLICE-@0

.   .   .   LITERAL-0 l(35) tc(1) int

.   RETURN l(37) tc(1)
.   RETURN-list
.   .   LITERAL-nil tc(1) .nil SLICE-@0

.   .   LITERAL-1 l(37) tc(1) int
after walk retrieve
.   DCL l(34)
.   .   NAME-main.value g(5) l(34) x(0) class(PAUTO) esc(no) tc(1) assigned used SLICE-@0

.   DCL l(34)
.   .   NAME-main.ok g(6) l(34) x(0) class(PAUTO) esc(no) tc(1) assigned used bool

.   AS l(34) tc(1)
.   .   NAME-main..autotmp_6 l(34) x(0) class(PAUTO) esc(N) tc(1) assigned used SLICE-@0

.   AS-init
.   .   CALLFUNC l(34) tc(1) hascall STRUCT-@0
.   .   .   NAME-runtime.mapaccess2_faststr x(0) class(PFUNC) tc(1) used FUNC-@0
.   .   CALLFUNC-rlist
.   .   .   ADDR l(34) tc(1) PTR-@0
.   .   .   .   NAME-type.map[string][]uint8 x(0) class(PEXTERN) tc(1) uint8

.   .   .   NAME-main.m g(3) l(33) x(0) class(PPARAM) esc(no) tc(1) used MAP-@0

.   .   .   BYTES2STRTMP l(34) esc(no) tc(1) string
.   .   .   .   NAME-main.key g(4) l(33) x(8) class(PPARAM) esc(no) tc(1) used SLICE-@0

.   .   BLOCK l(34)
.   .   BLOCK-list
.   .   .   AS l(34) tc(1)
.   .   .   .   NAME-main..autotmp_8 l(34) x(0) class(PAUTO) esc(N) tc(1) nonnil used PTR-@0
.   .   .   .   RESULT l(34) x(32) tc(1) PTR-@0

.   .   .   AS l(34) tc(1)
.   .   .   .   NAME-main..autotmp_7 l(34) x(0) class(PAUTO) esc(N) tc(1) used bool
.   .   .   .   RESULT l(34) x(40) tc(1) bool
.   AS l(34) tc(1) hascall
.   .   NAME-main..autotmp_6 l(34) x(0) class(PAUTO) esc(N) tc(1) assigned used SLICE-@0
.   .   DEREF l(34) tc(1) hascall SLICE-@0
.   .   .   NAME-main..autotmp_8 l(34) x(0) class(PAUTO) esc(N) tc(1) nonnil used PTR-@0

.   AS l(34) tc(1)
.   .   NAME-main.value g(5) l(34) x(0) class(PAUTO) esc(no) tc(1) assigned used SLICE-@0
.   .   NAME-main..autotmp_6 l(34) x(0) class(PAUTO) esc(N) tc(1) assigned used SLICE-@0

.   AS l(34) tc(1)
.   .   NAME-main.ok g(6) l(34) x(0) class(PAUTO) esc(no) tc(1) assigned used bool
.   .   NAME-main..autotmp_7 l(34) x(0) class(PAUTO) esc(N) tc(1) used bool

.   VARKILL l(34) tc(1)
.   .   NAME-main..autotmp_7 l(34) x(0) class(PAUTO) esc(N) tc(1) used bool

.   VARKILL l(34) tc(1)
.   .   NAME-main..autotmp_6 l(34) x(0) class(PAUTO) esc(N) tc(1) assigned used SLICE-@0

.   IF l(34) tc(1)
.   .   NAME-main.ok g(6) l(34) x(0) class(PAUTO) esc(no) tc(1) assigned used bool
.   IF-body
.   .   RETURN l(35) tc(1)
.   .   RETURN-list
.   .   .   AS l(35) tc(1)
.   .   .   .   NAME-main.~r2 g(1) l(33) x(32) class(PPARAMOUT) esc(no) SLICE-@0
.   .   .   .   NAME-main.value g(5) l(34) x(0) class(PAUTO) esc(no) tc(1) assigned used SLICE-@0

.   .   .   AS l(35) tc(1)
.   .   .   .   NAME-main.~r3 g(2) l(33) x(56) class(PPARAMOUT) esc(no) int
.   .   .   .   LITERAL-0 l(35) tc(1) int

.   RETURN l(37) tc(1)
.   RETURN-list
.   .   AS l(37) tc(1)
.   .   .   NAME-main.~r2 g(1) l(33) x(32) class(PPARAMOUT) esc(no) SLICE-@0
.   .   .   LITERAL-nil tc(1) .nil SLICE-@0

.   .   AS l(37) tc(1)
.   .   .   NAME-main.~r3 g(2) l(33) x(56) class(PPARAMOUT) esc(no) int
.   .   .   LITERAL-1 l(37) tc(1) int
enter retrieve
.   AS l(33)
.   .   NAME-main.~r2 g(1) l(33) x(32) class(PPARAMOUT) esc(no) SLICE-@0

.   AS l(33)
.   .   NAME-main.~r3 g(2) l(33) x(56) class(PPARAMOUT) esc(no) int

Kindly cc-ing @randall77 @cuonglm @mdempsky @dr2chase @josharian. I raise this issue because if the explanation is a complex one, perhaps we should examine what we can do, backport or it, or if not tell users upfront instead of them getting surprised. Thank you!
@odeke-em
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False alarm, at 1:45AM I was using a typo'd conversion for bytesToStr and used &str instead of &b, my apologies.

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