| 1 | // RUN: %clang_cc1 -emit-llvm %s -o - -triple=x86_64-pc-linux-gnu | FileCheck %s |
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| 2 | |
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| 3 | // Verifying that we do, in fact, select the correct function in the following |
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| 4 | // cases. |
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| 5 | |
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| 6 | void foo(int m) __attribute__((overloadable, enable_if(m > 0, ""))); |
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| 7 | void foo(int m) __attribute__((overloadable)); |
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| 8 | |
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| 9 | // CHECK-LABEL: define void @test1 |
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| 10 | void test1() { |
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| 11 | // CHECK: store void (i32)* @_Z3fooi |
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| 12 | void (*p)(int) = foo; |
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| 13 | // CHECK: store void (i32)* @_Z3fooi |
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| 14 | void (*p2)(int) = &foo; |
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| 15 | // CHECK: store void (i32)* @_Z3fooi |
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| 16 | p = foo; |
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| 17 | // CHECK: store void (i32)* @_Z3fooi |
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| 18 | p = &foo; |
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| 19 | |
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| 20 | // CHECK: store i8* bitcast (void (i32)* @_Z3fooi to i8*) |
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| 21 | void *vp1 = (void*)&foo; |
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| 22 | // CHECK: store i8* bitcast (void (i32)* @_Z3fooi to i8*) |
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| 23 | void *vp2 = (void*)foo; |
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| 24 | // CHECK: store i8* bitcast (void (i32)* @_Z3fooi to i8*) |
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| 25 | vp1 = (void*)&foo; |
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| 26 | // CHECK: store i8* bitcast (void (i32)* @_Z3fooi to i8*) |
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| 27 | vp1 = (void*)foo; |
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| 28 | } |
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| 29 | |
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| 30 | void bar(int m) __attribute__((overloadable, enable_if(m > 0, ""))); |
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| 31 | void bar(int m) __attribute__((overloadable, enable_if(1, ""))); |
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| 32 | // CHECK-LABEL: define void @test2 |
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| 33 | void test2() { |
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| 34 | // CHECK: store void (i32)* @_Z3barUa9enable_ifIXLi1EEEi |
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| 35 | void (*p)(int) = bar; |
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| 36 | // CHECK: store void (i32)* @_Z3barUa9enable_ifIXLi1EEEi |
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| 37 | void (*p2)(int) = &bar; |
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| 38 | // CHECK: store void (i32)* @_Z3barUa9enable_ifIXLi1EEEi |
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| 39 | p = bar; |
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| 40 | // CHECK: store void (i32)* @_Z3barUa9enable_ifIXLi1EEEi |
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| 41 | p = &bar; |
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| 42 | |
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| 43 | // CHECK: store i8* bitcast (void (i32)* @_Z3barUa9enable_ifIXLi1EEEi to i8*) |
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| 44 | void *vp1 = (void*)&bar; |
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| 45 | // CHECK: store i8* bitcast (void (i32)* @_Z3barUa9enable_ifIXLi1EEEi to i8*) |
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| 46 | void *vp2 = (void*)bar; |
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| 47 | // CHECK: store i8* bitcast (void (i32)* @_Z3barUa9enable_ifIXLi1EEEi to i8*) |
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| 48 | vp1 = (void*)&bar; |
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| 49 | // CHECK: store i8* bitcast (void (i32)* @_Z3barUa9enable_ifIXLi1EEEi to i8*) |
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| 50 | vp1 = (void*)bar; |
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| 51 | } |
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| 52 | |
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| 53 | void baz(int m) __attribute__((overloadable, enable_if(1, ""))); |
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| 54 | void baz(int m) __attribute__((overloadable)); |
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| 55 | // CHECK-LABEL: define void @test3 |
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| 56 | void test3() { |
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| 57 | // CHECK: store void (i32)* @_Z3bazUa9enable_ifIXLi1EEEi |
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| 58 | void (*p)(int) = baz; |
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| 59 | // CHECK: store void (i32)* @_Z3bazUa9enable_ifIXLi1EEEi |
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| 60 | void (*p2)(int) = &baz; |
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| 61 | // CHECK: store void (i32)* @_Z3bazUa9enable_ifIXLi1EEEi |
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| 62 | p = baz; |
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| 63 | // CHECK: store void (i32)* @_Z3bazUa9enable_ifIXLi1EEEi |
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| 64 | p = &baz; |
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| 65 | } |
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| 66 | |
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| 67 | |
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| 68 | const int TRUEFACTS = 1; |
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| 69 | void qux(int m) __attribute__((overloadable, enable_if(1, ""), |
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| 70 | enable_if(TRUEFACTS, ""))); |
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| 71 | void qux(int m) __attribute__((overloadable, enable_if(1, ""))); |
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| 72 | // CHECK-LABEL: define void @test4 |
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| 73 | void test4() { |
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| 74 | // CHECK: store void (i32)* @_Z3quxUa9enable_ifIXLi1EEXL_Z9TRUEFACTSEEEi |
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| 75 | void (*p)(int) = qux; |
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| 76 | // CHECK: store void (i32)* @_Z3quxUa9enable_ifIXLi1EEXL_Z9TRUEFACTSEEEi |
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| 77 | void (*p2)(int) = &qux; |
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| 78 | // CHECK: store void (i32)* @_Z3quxUa9enable_ifIXLi1EEXL_Z9TRUEFACTSEEEi |
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| 79 | p = qux; |
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| 80 | // CHECK: store void (i32)* @_Z3quxUa9enable_ifIXLi1EEXL_Z9TRUEFACTSEEEi |
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| 81 | p = &qux; |
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| 82 | } |
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| 83 | |
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| 84 | // There was a bug where, when enable_if was present, overload resolution |
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| 85 | // wouldn't pay attention to lower-priority attributes. |
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| 86 | // (N.B. `foo` with pass_object_size should always be preferred) |
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| 87 | // CHECK-LABEL: define void @test5 |
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| 88 | void test5() { |
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| 89 | int foo(char *i) __attribute__((enable_if(1, ""), overloadable)); |
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| 90 | int foo(char *i __attribute__((pass_object_size(0)))) |
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| 91 | __attribute__((enable_if(1, ""), overloadable)); |
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| 92 | |
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| 93 | // CHECK: call i32 @_Z3fooUa9enable_ifIXLi1EEEPcU17pass_object_size0 |
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| 94 | foo((void*)0); |
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| 95 | } |
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| 96 | |
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