// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

package obj

// Code and data passes.

// brloop returns the ultimate destination of the series of unconditional jumps beginning at p.
// In the case of an infinite loop, brloop returns nil.
func brloop(p *Prog) *Prog {
	c := 0
	for q := p; q != nil; q = q.To.Target() {

		}

		require.Empty(t, missingCompileErrs, "expected compilation errors")
		return
	} else if len(issues.Errors()) > 0 {
		t.Fatalf("%v", issues.Errors())
	}

	prog, err := env.Program(compiled)
	if err != nil {
		t.Fatalf("%v", err)
	}
	res, _, err := prog.Eval(map[string]interface{}{})
	if len(expectRuntimeErr) > 0 {
		if err == nil {
			t.Fatalf("no runtime error thrown. Expected: %v", expectRuntimeErr)

	// If the prologue layout change, the unwind information should be updated
	// accordingly.

	// Search for the PUSHQ BP instruction inside the prologue.
	var pushbp *obj.Prog
	for p := s.Func().Text; p != nil; p = p.Link {
		if p.As == APUSHQ && p.From.Type == obj.TYPE_REG && p.From.Reg == REG_BP {
			pushbp = p
			break
		}
		if p.Pos.Xlogue() == src.PosPrologueEnd {
			break
		}
	}
	if pushbp == nil {

	capNames := re.CapNames()

	re = re.Simplify()
	prog, err := syntax.Compile(re)
	if err != nil {
		return nil, err
	}
	matchcap := prog.NumCap
	if matchcap < 2 {
		matchcap = 2
	}
	regexp := &Regexp{
		expr:        expr,
		prog:        prog,
		onepass:     compileOnePass(prog),
		numSubexp:   maxCap,
		subexpNames: capNames,
		cond:        prog.StartCond(),
		longest:     longest,

	op_CDGR    uint32 = 0xB3C5 // FORMAT_RRE        CONVERT FROM FIXED (64 to long HFP)
	op_CDGTR   uint32 = 0xB3F1 // FORMAT_RRE        CONVERT FROM FIXED (64 to long DFP)
	op_CDGTRA  uint32 = 0xB3F1 // FORMAT_RRF5       CONVERT FROM FIXED (64 to long DFP)
	op_CDLFBR  uint32 = 0xB391 // FORMAT_RRF5       CONVERT FROM LOGICAL (32 to long BFP)

//
//	path, err := exec.LookPath("prog")
//	if err != nil {
//		log.Fatal(err)
//	}
//	use(path)
//
// and
//
//	cmd := exec.Command("prog")
//	if err := cmd.Run(); err != nil {
//		log.Fatal(err)
//	}
//
// These will not find and run ./prog or .\prog.exe,
// no matter how the current path is configured.
//
// Code that always wants to run a program from the current directory

// Issue #26234: Make various field/method lookup errors easier to read by matching cmd/compile's output
func issue26234a(f *syn.Prog) {
	// The error message below should refer to the actual package name (syntax)
	// not the local package name (syn).
	f.foo /* ERROR "f.foo undefined (type *syntax.Prog has no field or method foo)" */
}

type T struct {
	x int
	E1
	E2
}

type E1 struct{ f int }

var ARMDWARFRegisters = map[int16]int16{}

func init() {
	// f assigns dwarfregisters[from:to] = (base):(step*(to-from)+base)
	f := func(from, to, base, step int16) {
		for r := int16(from); r <= to; r++ {
			ARMDWARFRegisters[r] = step*(r-from) + base
		}
	}
	f(REG_R0, REG_R15, 0, 1)
	f(REG_F0, REG_F15, 64, 2) // Use d0 through D15, aka S0, S2, ..., S30
}

	// offset from the thread local base.
	C_TLS_IE

	C_ROFF // register offset (including register extended)

	C_GOK
	C_TEXTSIZE
	C_NCLASS // must be last
)

const (
	C_XPRE  = 1 << 6 // match arm.C_WBIT, so Prog.String know how to print it
	C_XPOST = 1 << 5 // match arm.C_PBIT, so Prog.String know how to print it
)

// the backtracker using prog.
func maxBitStateLen(prog *syntax.Prog) int {
	if !shouldBacktrack(prog) {
		return 0
	}
	return maxBacktrackVector / len(prog.Inst)
}

// shouldBacktrack reports whether the program is too
// long for the backtracker to run.
func shouldBacktrack(prog *syntax.Prog) bool {
	return len(prog.Inst) <= maxBacktrackProg
}