diff --git a/cgo_harness/p14_profile_test.go b/cgo_harness/p14_profile_test.go
new file mode 100644
index 000000000..d1e533ea2
--- /dev/null
+++ b/cgo_harness/p14_profile_test.go
@@ -0,0 +1,64 @@
+//go:build cgo && treesitter_c_parity
+
+package cgoharness
+
+import (
+	"testing"
+
+	gotreesitter "github.com/odvcencio/gotreesitter"
+)
+
+func benchmarkP14EarlyNewlineDirection(b *testing.B, reverse bool) {
+	b.Helper()
+	cases := loadCanonicalGoIncrementalCases(b)
+	var tc canonicalGoIncrementalCase
+	for _, candidate := range cases {
+		if candidate.spec.Name == "early_newline" {
+			tc = candidate
+			break
+		}
+	}
+	if tc.spec.Name == "" {
+		b.Fatal("canonical early_newline case is missing")
+	}
+	var from, target []byte
+	var edit gotreesitter.InputEdit
+	if reverse {
+		from, target, edit = tc.edited, tc.source, tc.reverse
+	} else {
+		from, target, edit = tc.source, tc.edited, tc.forward
+	}
+	parser := gotreesitter.NewParser(canonicalIncrementalGoLanguage(b, "go"))
+	tree, err := parser.Parse(from)
+	requireCanonicalGoIncrementalTree(b, tree, from, "P14 profile initial", err)
+	defer releaseCanonicalGoTree(tree)
+
+	b.ReportAllocs()
+	b.SetBytes(int64((len(tc.source) + len(tc.edited)) / 2))
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		if i > 0 {
+			b.StopTimer()
+			releaseCanonicalGoTree(tree)
+			tree, err = parser.Parse(from)
+			requireCanonicalGoIncrementalTree(b, tree, from, "P14 profile reset", err)
+			b.StartTimer()
+		}
+		tree.Edit(edit)
+		newTree, _, err := parser.ParseIncrementalProfiled(target, tree)
+		requireCanonicalGoIncrementalTree(b, newTree, target, "P14 profile direction", err)
+		if newTree != tree {
+			tree.Release()
+		}
+		tree = newTree
+	}
+	b.StopTimer()
+}
+
+func BenchmarkP14EarlyNewlineForward(b *testing.B) {
+	benchmarkP14EarlyNewlineDirection(b, false)
+}
+
+func BenchmarkP14EarlyNewlineReverse(b *testing.B) {
+	benchmarkP14EarlyNewlineDirection(b, true)
+}