1 | // RUN: %clang_cc1 -Werror -triple i386-linux -emit-llvm -o - %s | FileCheck %s |
2 | |
3 | // Test that different order of declarations is acceptable and that |
4 | // implementing different redeclarations is acceptable. |
5 | // rdar://problem/34949329 |
6 | |
7 | typedef union { |
8 | int i; |
9 | float f; |
10 | } TU __attribute__((transparent_union)); |
11 | |
12 | // CHECK-LABEL: define void @f0(i32 %tu.coerce) |
13 | // CHECK: %tu = alloca %union.TU, align 4 |
14 | // CHECK: %coerce.dive = getelementptr inbounds %union.TU, %union.TU* %tu, i32 0, i32 0 |
15 | // CHECK: store i32 %tu.coerce, i32* %coerce.dive, align 4 |
16 | void f0(TU tu) {} |
17 | void f0(int i); |
18 | |
19 | // CHECK-LABEL: define void @f1(i32 %tu.coerce) |
20 | // CHECK: %tu = alloca %union.TU, align 4 |
21 | // CHECK: %coerce.dive = getelementptr inbounds %union.TU, %union.TU* %tu, i32 0, i32 0 |
22 | // CHECK: store i32 %tu.coerce, i32* %coerce.dive, align 4 |
23 | void f1(int i); |
24 | void f1(TU tu) {} |
25 | |
26 | // CHECK-LABEL: define void @f2(i32 %i) |
27 | // CHECK: %i.addr = alloca i32, align 4 |
28 | // CHECK: store i32 %i, i32* %i.addr, align 4 |
29 | void f2(TU tu); |
30 | void f2(int i) {} |
31 | |
32 | // CHECK-LABEL: define void @f3(i32 %i) |
33 | // CHECK: %i.addr = alloca i32, align 4 |
34 | // CHECK: store i32 %i, i32* %i.addr, align 4 |
35 | void f3(int i) {} |
36 | void f3(TU tu); |
37 | |
38 | // Also test functions with parameters specified K&R style. |
39 | // CHECK-LABEL: define void @knrStyle(i32 %tu.coerce) |
40 | // CHECK: %tu = alloca %union.TU, align 4 |
41 | // CHECK: %coerce.dive = getelementptr inbounds %union.TU, %union.TU* %tu, i32 0, i32 0 |
42 | // CHECK: store i32 %tu.coerce, i32* %coerce.dive, align 4 |
43 | void knrStyle(int i); |
44 | void knrStyle(tu) TU tu; {} |
45 | |