1; RUN: llc < %s | FileCheck %s
2
3; Check that calls to baz and quux are tail-merged.
4; CHECK: bl _baz
5; CHECK-NOT: bl _baz
6; CHECK: bl _quux
7; CHECK-NOT: bl _quux
8
9; PR1628
10
11; ModuleID = 'tail.c'
12target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64"
13target triple = "arm-apple-darwin8"
14
15define i32 @f(i32 %i, i32 %q) {
16entry:
17	%i_addr = alloca i32		; <i32*> [#uses=2]
18	%q_addr = alloca i32		; <i32*> [#uses=2]
19	%retval = alloca i32, align 4		; <i32*> [#uses=1]
20	store i32 %i, i32* %i_addr
21	store i32 %q, i32* %q_addr
22	%tmp = load i32, i32* %i_addr		; <i32> [#uses=1]
23	%tmp1 = icmp ne i32 %tmp, 0		; <i1> [#uses=1]
24	%tmp12 = zext i1 %tmp1 to i8		; <i8> [#uses=1]
25	%toBool = icmp ne i8 %tmp12, 0		; <i1> [#uses=1]
26	br i1 %toBool, label %cond_true, label %cond_false
27
28cond_true:		; preds = %entry
29	%tmp3 = call i32 (...) @bar( )		; <i32> [#uses=0]
30	%tmp4 = call i32 (...) @baz( i32 5, i32 6 )		; <i32> [#uses=0]
31	%tmp7 = load i32, i32* %q_addr		; <i32> [#uses=1]
32	%tmp8 = icmp ne i32 %tmp7, 0		; <i1> [#uses=1]
33	%tmp89 = zext i1 %tmp8 to i8		; <i8> [#uses=1]
34	%toBool10 = icmp ne i8 %tmp89, 0		; <i1> [#uses=1]
35	br i1 %toBool10, label %cond_true11, label %cond_false15
36
37cond_false:		; preds = %entry
38	%tmp5 = call i32 (...) @foo( )		; <i32> [#uses=0]
39	%tmp6 = call i32 (...) @baz( i32 5, i32 6 )		; <i32> [#uses=0]
40	%tmp27 = load i32, i32* %q_addr		; <i32> [#uses=1]
41	%tmp28 = icmp ne i32 %tmp27, 0		; <i1> [#uses=1]
42	%tmp289 = zext i1 %tmp28 to i8		; <i8> [#uses=1]
43	%toBool210 = icmp ne i8 %tmp289, 0		; <i1> [#uses=1]
44	br i1 %toBool210, label %cond_true11, label %cond_false15
45
46cond_true11:		; preds = %cond_next
47	%tmp13 = call i32 (...) @foo( )		; <i32> [#uses=0]
48	%tmp14 = call i32 (...) @quux( i32 3, i32 4 )		; <i32> [#uses=0]
49	br label %cond_next18
50
51cond_false15:		; preds = %cond_next
52	%tmp16 = call i32 (...) @bar( )		; <i32> [#uses=0]
53	%tmp17 = call i32 (...) @quux( i32 3, i32 4 )		; <i32> [#uses=0]
54	br label %cond_next18
55
56cond_next18:		; preds = %cond_false15, %cond_true11
57	%tmp19 = call i32 (...) @bar( )		; <i32> [#uses=0]
58	br label %return
59
60return:		; preds = %cond_next18
61	%retval20 = load i32, i32* %retval		; <i32> [#uses=1]
62	ret i32 %retval20
63}
64
65declare i32 @bar(...)
66
67declare i32 @baz(...)
68
69declare i32 @foo(...)
70
71declare i32 @quux(...)
72