1 files changed, 74 insertions, 0 deletions
diff --git a/test/codegen/switch.go b/test/codegen/switch.go
new file mode 100644
index 0000000..af37628
--- /dev/null
+++ b/test/codegen/switch.go
@@ -0,0 +1,74 @@
+// asmcheck
+
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// These tests check code generation of switch statements.
+
+package codegen
+
+// see issue 33934
+func f(x string) int {
+	// amd64:-`cmpstring`
+	switch x {
+	case "":
+		return -1
+	case "1", "2", "3":
+		return -2
+	default:
+		return -3
+	}
+}
+
+// use jump tables for 8+ int cases
+func square(x int) int {
+	// amd64:`JMP\s\(.*\)\(.*\)$`
+	// arm64:`MOVD\s\(R.*\)\(R.*<<3\)`,`JMP\s\(R.*\)$`
+	switch x {
+	case 1:
+		return 1
+	case 2:
+		return 4
+	case 3:
+		return 9
+	case 4:
+		return 16
+	case 5:
+		return 25
+	case 6:
+		return 36
+	case 7:
+		return 49
+	case 8:
+		return 64
+	default:
+		return x * x
+	}
+}
+
+// use jump tables for 8+ string lengths
+func length(x string) int {
+	// amd64:`JMP\s\(.*\)\(.*\)$`
+	// arm64:`MOVD\s\(R.*\)\(R.*<<3\)`,`JMP\s\(R.*\)$`
+	switch x {
+	case "a":
+		return 1
+	case "bb":
+		return 2
+	case "ccc":
+		return 3
+	case "dddd":
+		return 4
+	case "eeeee":
+		return 5
+	case "ffffff":
+		return 6
+	case "ggggggg":
+		return 7
+	case "hhhhhhhh":
+		return 8
+	default:
+		return len(x)
+	}
+}