1; RUN: llc < %s -enable-tail-merge | FileCheck %s
2; Check that calls to baz and quux are tail-merged.
3; PR1628
4
5; CHECK: bl _baz
6; CHECK-NOT: bl _baz
7; CHECK: bl _quux
8; CHECK-NOT: bl _quux
9
10; ModuleID = 'tail.c'
11target triple = "arm-apple-darwin8"
12
13define i32 @f(i32 %i, i32 %q) {
14entry:
15	%i_addr = alloca i32		; <i32*> [#uses=2]
16	%q_addr = alloca i32		; <i32*> [#uses=2]
17	%retval = alloca i32, align 4		; <i32*> [#uses=1]
18	store i32 %i, i32* %i_addr
19	store i32 %q, i32* %q_addr
20	%tmp = load i32, i32* %i_addr		; <i32> [#uses=1]
21	%tmp1 = icmp ne i32 %tmp, 0		; <i1> [#uses=1]
22	%tmp12 = zext i1 %tmp1 to i8		; <i8> [#uses=1]
23	%toBool = icmp ne i8 %tmp12, 0		; <i1> [#uses=1]
24	br i1 %toBool, label %cond_true, label %cond_false
25
26cond_true:		; preds = %entry
27	%tmp3 = call i32 (...) @bar( )		; <i32> [#uses=0]
28	%tmp4 = call i32 (...) @baz( i32 5, i32 6 )		; <i32> [#uses=0]
29	br label %cond_next
30
31cond_false:		; preds = %entry
32	%tmp5 = call i32 (...) @foo( )		; <i32> [#uses=0]
33	%tmp6 = call i32 (...) @baz( i32 5, i32 6 )		; <i32> [#uses=0]
34	br label %cond_next
35
36cond_next:		; preds = %cond_false, %cond_true
37	%tmp7 = load i32, i32* %q_addr		; <i32> [#uses=1]
38	%tmp8 = icmp ne i32 %tmp7, 0		; <i1> [#uses=1]
39	%tmp89 = zext i1 %tmp8 to i8		; <i8> [#uses=1]
40	%toBool10 = icmp ne i8 %tmp89, 0		; <i1> [#uses=1]
41	br i1 %toBool10, label %cond_true11, label %cond_false15
42
43cond_true11:		; preds = %cond_next
44	%tmp13 = call i32 (...) @foo( )		; <i32> [#uses=0]
45	%tmp14 = call i32 (...) @quux( i32 3, i32 4 )		; <i32> [#uses=0]
46	br label %cond_next18
47
48cond_false15:		; preds = %cond_next
49	%tmp16 = call i32 (...) @bar( )		; <i32> [#uses=0]
50	%tmp17 = call i32 (...) @quux( i32 3, i32 4 )		; <i32> [#uses=0]
51	br label %cond_next18
52
53cond_next18:		; preds = %cond_false15, %cond_true11
54	%tmp19 = call i32 (...) @bar( )		; <i32> [#uses=0]
55	br label %return
56
57return:		; preds = %cond_next18
58	%retval20 = load i32, i32* %retval		; <i32> [#uses=1]
59	ret i32 %retval20
60}
61
62declare i32 @bar(...)
63
64declare i32 @baz(...)
65
66declare i32 @foo(...)
67
68declare i32 @quux(...)
69