if n.OpenDeferSlot() {
				// Open-coded defer args slots must be live
				// everywhere in a function, since a panic can
				// occur (almost) anywhere. Because it is live
				// everywhere, it must be zeroed on entry.
				livedefer.Set(int32(i))
				// It was already marked as Needzero when created.
				if !n.Needzero() {
					base.Fatalf("all pointer-containing defer arg slots should have Needzero set")
				}
			}
		}
	}

	// The maximum number of bytes required to hold the encoded type.
	maxBytes := 1 + 5*traceBytesPerNumber + len(typName)

	// Estimate the size of this record. This
	// bound is pretty loose, but avoids counting
	// lots of varint sizes.
	//
	// Add 1 because we might also write a traceAllocFreeTypesBatch byte.
	var flushed bool
	w, flushed = w.ensure(1 + maxBytes)
	if flushed {
		// Annotate the batch as containing types.

		}
	}
}

func TestMergeLocalsIntegration(t *testing.T) {
	testenv.MustHaveGoBuild(t)

	// This test does a build of a specific canned package to
	// check whether merging of stack slots is taking place.
	// The idea is to do the compile with a trace option turned
	// on and then pick up on the frame offsets of specific
	// variables.
	//
	// Stack slot merging is a greedy algorithm, and there can

// ensure that output param is allocated on the heap. Also, since there is a
// defer, the pointer to each output param must be zeroed in the prologue (see
// plive.go:epilogue()). So, we will get a block of one or more stack slots that
// need to be zeroed. Hence, we are testing compilation completes successfully when
// zerorange calls of various sizes (8-136 bytes) are generated. We are not

	// Alternative names to display (with decreasing lengths) to make text fit.
	// Guaranteed to be non-empty.
	Display []string

	// Places holds the list of stack slots where this source occurs.
	// In particular, if [a,b] is an element in Places,
	// StackSet.Stacks[a].Sources[b] points to this source.
	//
	// No stack will be referenced twice in the Places slice for a given

	}

	// Implementation note: this function would be faster and simpler
	// if we could just zero out the entire counter array, but for the
	// moment we go through and zero out just the slots in the array
	// corresponding to the counter values. We do this to avoid the
	// following bad scenario: suppose that a user builds their Go
	// program with "-cover", and that program has a function (call it

		c0 := substr[0]
		c1 := substr[1]
		i := 0
		t := len(s) - n + 1
		fails := 0
		for i < t {
			if s[i] != c0 {
				// IndexByte is faster than bytealg.IndexString, so use it as long as
				// we're not getting lots of false positives.
				o := IndexByte(s[i+1:t], c0)
				if o < 0 {
					return -1
				}
				i += o + 1
			}
			if s[i+1] == c1 && s[i:i+n] == substr {
				return i
			}
			fails++
			i++

		t.Logf("vmmap output: %s", out)
		if ee, ok := cmdErr.(*exec.ExitError); ok && len(ee.Stderr) > 0 {
			t.Logf("%v: %v\n%s", cmd, cmdErr, ee.Stderr)
			if testing.Short() && strings.Contains(string(ee.Stderr), "No process corpse slots currently available, waiting to get one") {
				t.Skipf("Skipping knwn flake in short test mode")
			}
			retryable = bytes.Contains(ee.Stderr, []byte("resource shortage"))
		}
		t.Logf("%v: %v\n", cmd, cmdErr)

    // If duplicates are allowed, this IdentityHashMap will record the final Entry for each
    // duplicated key. We will use this final Entry to overwrite earlier slots in the entries array
    // that have the same key. Then a second pass will remove all but the first of the slots that
    // have this Entry. The value in the map becomes false when this first entry has been copied, so
    // we know not to copy the remaining ones.

		s = int32(data2[18])
		t = int32(data2[19])
		u = int32(data2[20])
		v = int32(data2[21])
		w = int32(data2[22])
		x = int32(data2[23])
		y = int32(data2[24])
		z = int32(data2[25])
	}
	// Lots of phis of the form phi(int32,int64) of type int32 happen here.
	// Some will be stack phis. For those stack phis, make sure the spill
	// of the second argument uses the phi's width (4 bytes), not its width