if et == types.TINT64 {
		tHi = x.typs.Int32
	}
	tLo = x.typs.UInt32
	return
}

// offsetFrom creates an offset from a pointer, simplifying chained offsets and offsets from SP
func (x *expandState) offsetFrom(b *Block, from *Value, offset int64, pt *types.Type) *Value {
	ft := from.Type
	if offset == 0 {
		if ft == pt {
			return from
		}

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package runtime

import (
	"internal/cpu"
	"unsafe"
)

// Offsets into internal/cpu records for use in assembly.
const (
	offsetX86HasAVX    = unsafe.Offsetof(cpu.X86.HasAVX)
	offsetX86HasAVX2   = unsafe.Offsetof(cpu.X86.HasAVX2)
	offsetX86HasERMS   = unsafe.Offsetof(cpu.X86.HasERMS)

	if i := len(f.infos); (i == 0 || f.infos[i-1].Offset < offset) && offset < f.size {
		f.infos = append(f.infos, lineInfo{offset, filename, line, column})
	}
	f.mutex.Unlock()
}

// fixOffset fixes an out-of-bounds offset such that 0 <= offset <= f.size.
func (f *File) fixOffset(offset int) int {
	switch {
	case offset < 0:
		if !debug {
			return 0
		}
	case offset > f.size:
		if !debug {
			return f.size

// area storing the offsets of each section. Format of the meta-data
// file looks like:
//
// --header----------
//  | magic: [4]byte magic string
//  | version
//  | total length of meta-data file in bytes
//  | numPkgs: number of package entries in file
//  | hash: [16]byte hash of entire meta-data payload
//  | offset to string table section
//  | length of string table

// s.scanIdentifier.
func (s *Scanner) next() {
	if s.rdOffset < len(s.src) {
		s.offset = s.rdOffset
		if s.ch == '\n' {
			s.lineOffset = s.offset
			s.file.AddLine(s.offset)
		}
		r, w := rune(s.src[s.rdOffset]), 1
		switch {
		case r == 0:
			s.error(s.offset, "illegal character NUL")
		case r >= utf8.RuneSelf:
			// not ASCII
			r, w = utf8.DecodeRune(s.src[s.rdOffset:])
			if r == utf8.RuneError && w == 1 {

// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Issue 6036: 6g's backend generates OINDREG with
// offsets larger than 32-bit.

package main

type T struct {
	Large [1 << 31]byte
	A     int
	B     int
}

func F(t *T) {
	t.B = t.A
}

type T2 [1<<31 + 2]byte

func F2(t *T2) {

	zone := &l.zone[tx[lo].index]
	name = zone.name
	offset = zone.offset
	start = tx[lo].when
	// end = maintained during the search
	isDST = zone.isDST

	// If we're at the end of the known zone transitions,
	// try the extend string.
	if lo == len(tx)-1 && l.extend != "" {
		if ename, eoffset, estart, eend, eisDST, ok := tzset(l.extend, start, sec); ok {
			return ename, eoffset, estart, eend, eisDST
		}
	}

	return

	}

	y := &globallib.Data[1<<20+2]
	if y != &ptrData()[1<<20+2] {
		panic("testLargeOffset: address mismatch")
	}
}

func main() {
	testLoop()

	// SSA rules commonly merge offsets into addresses. These
	// tests access global data in different ways to try
	// and exercise different SSA rules.
	testMediumOffset()
	testLargeOffset()

func (p ErrorList) Swap(i, j int) { p[i], p[j] = p[j], p[i] }

func (p ErrorList) Less(i, j int) bool {
	e := &p[i].Pos
	f := &p[j].Pos
	// Note that it is not sufficient to simply compare file offsets because
	// the offsets do not reflect modified line information (through //line
	// comments).
	if e.Filename != f.Filename {
		return e.Filename < f.Filename
	}
	if e.Line != f.Line {
		return e.Line < f.Line
	}

	MOVQ (AX), M0  // 0f6f00
	MOVQ M0, 8(SP) // 0f7f442408
	MOVQ 8(SP), M0 // 0f6f442408
	MOVQ M0, (AX)  // 0f7f00
	MOVQ M0, (BX)  // 0f7f03
	// On non-64bit arch, Go asm allowed uint32 offsets instead of int32.
	// These tests check that property for backwards-compatibility.
	MOVL 2147483648(AX), AX  // 8b8000000080
	MOVL -2147483648(AX), AX // 8b8000000080
	ADDL 2147483648(AX), AX  // 038000000080