diff --git a/.github/memci.json b/.github/memci.json
new file mode 100644
index 0000000..249a3d4
--- /dev/null
+++ b/.github/memci.json
@@ -0,0 +1,12 @@
+[
+  {
+    "name": "bindiff",
+    "build": "go build -trimpath -buildvcs=false -o bindiff.elf ./cmd/bindiff",
+    "elf": "bindiff.elf"
+  },
+  {
+    "name": "picobin",
+    "build": "go build -trimpath -buildvcs=false -o picobin.elf ./cmd/picobin",
+    "elf": "picobin.elf"
+  }
+]
diff --git a/.github/workflows/memci.yml b/.github/workflows/memci.yml
index 33f5f07..fcee317 100644
--- a/.github/workflows/memci.yml
+++ b/.github/workflows/memci.yml
@@ -17,17 +17,14 @@ jobs:
 
       - uses: actions/setup-go@v6
         with:
-          # TinyGo 0.42 builds with Go 1.25 through 1.27 and refuses anything
-          # outside that window, so the two versions below move together.
           go-version: "1.26"
-      - uses: acifani/setup-tinygo@v2
-        with:
-          tinygo-version: "0.42.0"
 
+      # Both binaries here are host tools. A TinyGo target would need
+      # acifani/setup-tinygo installed above and a build command naming it.
       - uses: soypat/memci@main
         with:
-          args: -targets ./cmd/... -kind package
+          args: -kind package
           # bindiff lives in this repo, so measure with the copy under test
           # rather than installing a published one.
           bindiff: go run ./cmd/bindiff
-          tinygo: tinygo
+          targets: .github/memci.json
diff --git a/.gitignore b/.gitignore
index d6660bc..d8c5f04 100644
--- a/.gitignore
+++ b/.gitignore
@@ -43,6 +43,8 @@ local
 *.tsv
 *.dat
 *.json
+# memci's build list is configuration, not data.
+!.github/memci.json
 *.xlsx
 *.xls
 *.zip
diff --git a/build/xdwarf/bench_test.go b/build/xdwarf/bench_test.go
index cf0ac42..dbd92a4 100644
--- a/build/xdwarf/bench_test.go
+++ b/build/xdwarf/bench_test.go
@@ -28,10 +28,10 @@ func BenchmarkLineRowsXdwarf(b *testing.B) {
 	// once the tables have grown to their high-water mark.
 	var u xdwarf.LineUnit
 	aux := make([]byte, benchAux)
-	var nameBuf []byte
+	nameBuf := make([]byte, 0, benchAux)
 	b.ReportAllocs()
 	b.ResetTimer()
-	for i := 0; i < b.N; i++ {
+	for b.Loop() {
 		var rows int
 		for off := int64(0); off < size; {
 			next, err := xdwarf.DecodeLineUnit(&u, sec, off, size, aux)
@@ -68,7 +68,7 @@ func BenchmarkLineRowsStdlib(b *testing.B) {
 	}
 	b.ReportAllocs()
 	b.ResetTimer()
-	for i := 0; i < b.N; i++ {
+	for b.Loop() {
 		d, err := ef.DWARF()
 		if err != nil {
 			b.Fatal(err)