Benchmark error fix and 0.42.0 additions

bench_test.go

@@ -110,10 +110,10 @@ func BenchmarkAll(b *testing.B) {
 	for _, testname := range benchnames {
 		argdata, err := os.ReadFile(testname + "/args.txt")
 		casesJoined := strings.TrimSpace(string(argdata))
-		if len(argdata) == 0 {
-			b.Fatalf("%s has empty 'args.txt' file", testname)
-		} else if err != nil {
-			b.Fatalf("%s failed open arguments file 'args.txt': %s", testname, err)
+		if err != nil {
+			b.Fatalf("benchmark %q: failed open arguments file 'args.txt': %s", testname, err)
+		} else if len(argdata) == 0 {
+			b.Fatalf("benchmark %q: has empty 'args.txt' file", testname)
 		}
 
 		cases := strings.Split(casesJoined, "\n")

fannkuch-redux/args.txt

@@ -1,3 +1,2 @@
-6
-7
-9
+9
+10

fasta/args.txt

@@ -1,2 +1,2 @@
-12500000
-25000000
+1000000
+8000000

n-body-nosqrt/args.txt

@@ -1,3 +1,2 @@
-50000
-100000
-200000
+200000
+300000

n-body/args.txt

@@ -1,3 +1,2 @@
-50000
-100000
-200000
+200000
+300000

plot_/main.go

@@ -55,7 +55,7 @@ func drawBenchmark(langs []langBench, savefile, baseCompiler string) error {
 	var (
 		maxBenchs  = nBenchs * len(langs)
 		plotHeight = 10 * vg.Inch
-		plotWidth  = plotHeight * vg.Length(maxBenchs) / 20
+		plotWidth  = plotHeight*vg.Length(maxBenchs)/20 + 1*vg.Centimeter
 		benchWidth = plotWidth / vg.Length(nBenchs)
 
 		fontsize = plotHeight / 25
@@ -117,6 +117,7 @@ func drawBenchmark(langs []langBench, savefile, baseCompiler string) error {
 	}
 	p_time.Legend.Top = true
 	p_time.NominalX(nominals...)
+	p_time.X.Max *= 1.1                             // Give bars margin so they don't overlap with legend.
 	p_time.X.Tick.Label.Font.Size = benchWidth / 12 // Nominal size.
 
 	p_time.Title.TextStyle.Font.Size = fontsize