1; RUN: llc < %s -mtriple thumbv7s-apple-darwin  -asm-verbose=false | FileCheck %s
2; RUN: llc < %s -mtriple thumbv7s-apple-darwin  -asm-verbose=false -print-machineinstrs=if-converter 2>&1 | FileCheck --check-prefix=CHECK-PROB %s
3
4declare i32 @foo(i32)
5declare i8* @bar(i32, i8*, i8*)
6
7; Verify that we don't try to iteratively re-ifconvert a block with a
8; (predicated) indirectbr terminator.
9; If we do, we would ignore its fallthrough successor.
10
11
12; CHECK-LABEL: test:
13; CHECK:       cmp {{.*}}, #21
14; CHECK-NEXT:  itt eq
15; CHECK-NEXT:  streq.w
16; CHECK-NEXT:  moveq pc
17; CHECK-NEXT: LBB{{[0-9_]+}}:
18; CHECK-NEXT:  cmp {{.*}}, #42
19; CHECK-NEXT:  beq [[CALL_FOO_1234:LBB[0-9_]+]]
20; CHECK-NEXT:  ldr {{.*}}[sp
21; CHECK-NEXT:  str
22; CHECK-NEXT:  mov pc
23; CHECK-NEXT: Ltmp
24; CHECK-NEXT: [[CALL_FOO_1234]]:
25; CHECK-NEXT:  movw r0, #1234
26; CHECK-NEXT:  b [[FOOCALL:LBB[0-9_]+]]
27; CHECK-NEXT: Ltmp
28; CHECK-NEXT: LBB{{[0-9_]+}}:
29; CHECK-NEXT:  movw r0, #4567
30; CHECK-NEXT: [[FOOCALL]]:
31; CHECK-NEXT:  bl _foo
32;
33; CHECK-PROB: bb.0{{[0-9a-zA-Z.]*}}:
34; CHECK-PROB: successors: %bb.1(0x40000000), %bb.3(0x20000000), %bb.5(0x20000000)
35; CHECK-PROB: bb.2{{[0-9a-zA-Z.]*}}:
36; CHECK-PROB: successors: %bb.3(0x40000000), %bb.5(0x40000000)
37
38define i32 @test(i32 %a, i32 %a2, i32* %p, i32* %p2) "no-frame-pointer-elim"="true" {
39entry:
40  %dst1 = call i8* @bar(i32 1, i8* blockaddress(@test, %bb1), i8* blockaddress(@test, %bb2))
41  %dst2 = call i8* @bar(i32 2, i8* blockaddress(@test, %bb1), i8* blockaddress(@test, %bb2))
42  %dst3 = call i8* @bar(i32 3, i8* blockaddress(@test, %bb1), i8* blockaddress(@test, %bb2))
43  %cc1 = icmp eq i32 %a, 21
44  br i1 %cc1, label %cc1t, label %cc1f
45
46cc1t:
47  store i32 %a, i32* %p
48  indirectbr i8* %dst3, [label %bb1, label %bb2]
49
50cc1f:
51  %cc2 = icmp ne i32 %a2, 42
52  br i1 %cc2, label %cc2t, label %bb1
53cc2t:
54  store i32 %a, i32* %p2
55  indirectbr i8* %dst1, [label %bb1, label %bb2]
56
57bb1:
58  %ret_bb1 = call i32 @foo(i32 1234)
59  ret i32 %ret_bb1
60bb2:
61  %ret_bb2 = call i32 @foo(i32 4567)
62  ret i32 %ret_bb2
63}
64