1; RUN: opt -simplifycfg -S %s | FileCheck %s
2; rdar://15268442
3
4target datalayout = "e-p:64:64:64-S128-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f16:16:16-f32:32:32-f64:64:64-f128:128:128-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
5target triple = "x86_64-apple-darwin12.0.0"
6
7; CHECK-LABEL: define i3 @coveredswitch_test(
8; CHECK: entry:
9; CHECK-NEXT: sub i3 %input, -4
10; CHECK-NEXT: zext i3 %switch.tableidx to i24
11; CHECK-NEXT: mul i24 %switch.cast, 3
12; CHECK-NEXT: lshr i24 7507338, %switch.shiftamt
13; CHECK-NEXT: trunc i24 %switch.downshift to i3
14; CHECK-NEXT: ret i3 %switch.masked
15
16define i3 @coveredswitch_test(i3 %input) {
17entry:
18  switch i3 %input, label %bb8 [
19    i3 0, label %bb7
20    i3 1, label %bb
21    i3 2, label %bb3
22    i3 3, label %bb4
23    i3 4, label %bb5
24    i3 5, label %bb6
25  ]
26
27bb:                                               ; preds = %entry
28  br label %bb8
29
30bb3:                                              ; preds = %entry
31  br label %bb8
32
33bb4:                                              ; preds = %entry
34  br label %bb8
35
36bb5:                                              ; preds = %entry
37  br label %bb8
38
39bb6:                                              ; preds = %entry
40  br label %bb8
41
42bb7:                                              ; preds = %entry
43  br label %bb8
44
45bb8:                                              ; preds = %bb7, %bb6, %bb5, %bb4, %bb3, %bb, %entry
46  %result = phi i3 [ 0, %bb7 ], [ 1, %bb6 ], [ 2, %bb5 ], [ 3, %bb4 ], [ 4, %bb3 ], [ 5, %bb ], [ 6, %entry ]
47  ret i3 %result
48}
49