1; RUN: opt < %s -instcombine -S | FileCheck %s
2
3target datalayout = "e-p:32:32"
4target triple = "i686-pc-linux-gnu"
5
6define i32 @main() {
7; CHECK-LABEL: @main
8; CHECK: %[[call:.*]] = call i8* @ctime(i32* null)
9; CHECK: %[[cast:.*]] = ptrtoint i8* %[[call]] to i32
10; CHECK: ret i32 %[[cast]]
11entry:
12  %tmp = call i32 bitcast (i8* (i32*)* @ctime to i32 (i32*)*)( i32* null )          ; <i32> [#uses=1]
13  ret i32 %tmp
14}
15
16declare i8* @ctime(i32*)
17
18define internal { i8 } @foo(i32*) {
19entry:
20  ret { i8 } { i8 0 }
21}
22
23define void @test_struct_ret() {
24; CHECK-LABEL: @test_struct_ret
25; CHECK-NOT: bitcast
26entry:
27  %0 = call { i8 } bitcast ({ i8 } (i32*)* @foo to { i8 } (i16*)*)(i16* null)
28  ret void
29}
30
31declare i32 @fn1(i32)
32
33define i32 @test1(i32* %a) {
34; CHECK-LABEL: @test1
35; CHECK:      %[[cast:.*]] = ptrtoint i32* %a to i32
36; CHECK-NEXT: %[[call:.*]] = tail call i32 @fn1(i32 %[[cast]])
37; CHECK-NEXT: ret i32 %[[call]]
38entry:
39  %call = tail call i32 bitcast (i32 (i32)* @fn1 to i32 (i32*)*)(i32* %a)
40  ret i32 %call
41}
42
43declare i32 @fn2(i16)
44
45define i32 @test2(i32* %a) {
46; CHECK-LABEL: @test2
47; CHECK:      %[[call:.*]] = tail call i32 bitcast (i32 (i16)* @fn2 to i32 (i32*)*)(i32* %a)
48; CHECK-NEXT: ret i32 %[[call]]
49entry:
50  %call = tail call i32 bitcast (i32 (i16)* @fn2 to i32 (i32*)*)(i32* %a)
51  ret i32 %call
52}
53
54declare i32 @fn3(i64)
55
56define i32 @test3(i32* %a) {
57; CHECK-LABEL: @test3
58; CHECK:      %[[call:.*]] = tail call i32 bitcast (i32 (i64)* @fn3 to i32 (i32*)*)(i32* %a)
59; CHECK-NEXT: ret i32 %[[call]]
60entry:
61  %call = tail call i32 bitcast (i32 (i64)* @fn3 to i32 (i32*)*)(i32* %a)
62  ret i32 %call
63}
64
65declare i32 @fn4(i32) "thunk"
66
67define i32 @test4(i32* %a) {
68; CHECK-LABEL: @test4
69; CHECK:      %[[call:.*]] = tail call i32 bitcast (i32 (i32)* @fn4 to i32 (i32*)*)(i32* %a)
70; CHECK-NEXT: ret i32 %[[call]]
71entry:
72  %call = tail call i32 bitcast (i32 (i32)* @fn4 to i32 (i32*)*)(i32* %a)
73  ret i32 %call
74}
75
76declare i1 @fn5({ i32, i32 }* byval({ i32, i32 }) align 4 %r)
77
78define i1 @test5() {
79; CHECK-LABEL: @test5
80; CHECK:      %[[call:.*]] = call i1 bitcast (i1 ({ i32, i32 }*)* @fn5 to i1 (i32, i32)*)(i32 {{.*}}, i32 {{.*}})
81; CHECK-NEXT: ret i1 %[[call]]
82  %1 = alloca { i32, i32 }, align 4
83  %2 = getelementptr inbounds { i32, i32 }, { i32, i32 }* %1, i32 0, i32 0
84  %3 = load i32, i32* %2, align 4
85  %4 = getelementptr inbounds { i32, i32 }, { i32, i32 }* %1, i32 0, i32 1
86  %5 = load i32, i32* %4, align 4
87  %6 = call i1 bitcast (i1 ({ i32, i32 }*)* @fn5 to i1 (i32, i32)*)(i32 %3, i32 %5)
88  ret i1 %6
89}
90