| Andrew Wilkins | f3718a9 | 2015-01-08 07:49:28 +0000 | [diff] [blame] | 1 | // RUN: llgo -S -emit-llvm -o - %s | FileCheck %s |
| 2 | |
| 3 | package foo |
| 4 | |
| 5 | // CHECK: switch i32 |
| 6 | // CHECK-NEXT: i32 0, label %[[L0:.*]] |
| 7 | // CHECK-NEXT: i32 1, label %[[L1:.*]] |
| 8 | // CHECK-NEXT: i32 2, label %[[L2:.*]] |
| 9 | // CHECK-NEXT: ] |
| 10 | // CHECK: [[L0]]: |
| 11 | // CHECK-NEXT: ret i32 1 |
| 12 | // CHECK: [[L1]]: |
| 13 | // CHECK-NEXT: ret i32 2 |
| 14 | // CHECK: [[L2]]: |
| 15 | // CHECK-NEXT: ret i32 0 |
| 16 | func F1(x int32) int32 { |
| 17 | switch x { |
| 18 | case 0: |
| 19 | return 1 |
| 20 | case 1: |
| 21 | return 2 |
| 22 | case 2: |
| 23 | return 0 |
| 24 | } |
| 25 | panic("unreachable") |
| 26 | } |
| 27 | |
| 28 | // CHECK: switch i64 |
| 29 | // CHECK-NEXT: i64 0 |
| 30 | // CHECK-NEXT: ] |
| 31 | // CHECK: icmp eq i64 {{.*}}, 1 |
| 32 | func F2(x int64) bool { |
| 33 | return x == 0 || x == 0 || x == 1 |
| 34 | } |
| 35 | |
| 36 | // CHECK: switch i64 |
| 37 | // CHECK-NEXT: i64 0 |
| 38 | // CHECK-NEXT: ] |
| 39 | func F3(x int64) bool { |
| 40 | return x == 0 || x == 0 || x == 0 |
| 41 | } |
| 42 | |
| 43 | // CHECK: switch i64 |
| 44 | // CHECK-NEXT: i64 0 |
| 45 | // CHECK-NEXT: i64 1 |
| 46 | // CHECK-NEXT: i64 2 |
| 47 | // CHECK-NEXT: ] |
| 48 | // CHECK: icmp eq i64 {{.*}}, 3 |
| 49 | func F4(x int64) bool { |
| 50 | return x == 0 || x == 1 || x == 2 || x == 3 |
| 51 | } |
| 52 | |
| 53 | // CHECK-NOT: switch double |
| 54 | func F5(x float64) float64 { |
| 55 | switch x { |
| 56 | case 0: |
| 57 | return 1.0 |
| 58 | case 1.0: |
| 59 | return 0 |
| 60 | } |
| 61 | panic("unreachable") |
| 62 | } |