"stackmapdata",
			"stringStructOf",
			"subtract1",
			"subtractb",
			"tophash",
			"(*bmap).keys",
			"(*bmap).overflow",
			"(*waitq).enqueue",
			"funcInfo.entry",

			// GC-related ones
			"cgoInRange",
			"gclinkptr.ptr",
			"guintptr.ptr",
			"heapBitsSlice",
			"markBits.isMarked",
			"muintptr.ptr",
			"puintptr.ptr",
			"spanOf",
			"spanOfUnchecked",
			"typePointers.nextFast",

				f.NamedValues[*dataName] = append(f.NamedValues[*dataName], v.Args[1])
				toDelete = append(toDelete, namedVal{i, j})
			}
		case t.IsFloat():
			// floats are never decomposed, even ones bigger than RegSize
		case t.Size() > f.Config.RegSize:
			f.Fatalf("undecomposed named type %s %v", name, t)
		}
	}

	deleteNamedVals(f, toDelete)
	f.Names = append(f.Names, newNames...)
}

	// it's a lot harder to work out the argument after.
	for _, n := range typecheck.Target.Funcs {
		c.curfn = n
		if c.curfn.ABIWrapper() {
			// We only want "real" calls to these
			// functions, not the generated ones within
			// their own ABI wrappers.
			continue
		}
		ir.Visit(n, c.findExtraCalls)
	}
	c.curfn = nil
	return c
}

func (c *nowritebarrierrecChecker) findExtraCalls(nn ir.Node) {

			t.Fatalf("ReadRune(%U) after UnreadRune got %U,%d not %U,%d (err=%s)", r, r2, nbytes, r, size, err)
		}
	}
}

func TestWriteInvalidRune(t *testing.T) {
	// Invalid runes, including negative ones, should be written as
	// utf8.RuneError.
	for _, r := range []rune{-1, utf8.MaxRune + 1} {
		var buf Buffer
		buf.WriteRune(r)
		check(t, fmt.Sprintf("TestWriteInvalidRune (%d)", r), &buf, "\uFFFD")
	}
}

package ssa

import (
	"cmd/compile/internal/base"
	"cmd/compile/internal/types"
	"cmd/internal/src"
	"sort"
)

// memcombine combines smaller loads and stores into larger ones.
// We ensure this generates good code for encoding/binary operations.
// It may help other cases also.
func memcombine(f *Func) {
	// This optimization requires that the architecture has

	// Liveness information flows backward, so starting at the end
	// increases the probability that we will stabilize quickly.
	// TODO: Do a better job yet. Here's one possibility:
	// Calculate the dominator tree and locate all strongly connected components.
	// If a value is live in one block of an SCC, it is live in all.
	// Walk the dominator tree from end to beginning, just once, treating SCC

	// Keep a list of all the functions, to remove the ones
	// only used as expressions and avoid generating bridge
	// code for them.
	functions := make(map[string]bool)

	for _, n := range f.Name {
		if n.Kind == "func" {
			functions[n.Go] = false
		}
	}

	// Now that we have all the name types filled in,
	// scan through the Refs to identify the ones that
	// are trying to do a ,err call. Also check that

				t.Fatalf("n = %d: unexpected error on ReadByte: %v", n, err)
			}
			if b != data[i] {
				t.Fatalf("n = %d: incorrect byte returned from ReadByte: got %q, want %q", n, b, data[i])
			}
		}
		// Unread one byte if there is one.
		if n > 0 {
			if err := r.UnreadByte(); err != nil {
				t.Errorf("n = %d: unexpected error on UnreadByte: %v", n, err)
			}
		}
		// Test that we cannot unread any further.

		// but does not do the following properly:
		//	* It does not treat an empty record as deletion.
		//	* It does not use subsequent global headers to update previous ones.
		//
		//	$ gnutar -tvf pax-global-records.tar
		//	---------- 0/0               0 2017-07-13 19:40 global1
		//	---------- 0/0               0 2017-07-13 19:40 file2
		//	gnutar: Substituting `.' for empty member name

//
// Visit and Any are presented above as examples of how to use
// DoChildren effectively, but of course, usage that fits within the
// simplifications captured by Visit or Any will be best served
// by directly calling the ones provided by this package.
func DoChildren(n Node, do func(Node) bool) bool {
	if n == nil {
		return false
	}
	return n.doChildren(do)
}

// Visit visits each non-nil node x in the IR tree rooted at n