96 lines
3.3 KiB
C
96 lines
3.3 KiB
C
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// RUN: %clang_cc1 -emit-llvm %s -o - -triple=x86_64-pc-linux-gnu | FileCheck %s
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// Verifying that we do, in fact, select the correct function in the following
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// cases.
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void foo(int m) __attribute__((overloadable, enable_if(m > 0, "")));
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void foo(int m) __attribute__((overloadable));
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// CHECK-LABEL: define{{.*}} void @test1
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void test1() {
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// CHECK: store void (i32)* @_Z3fooi
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void (*p)(int) = foo;
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// CHECK: store void (i32)* @_Z3fooi
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void (*p2)(int) = &foo;
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// CHECK: store void (i32)* @_Z3fooi
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p = foo;
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// CHECK: store void (i32)* @_Z3fooi
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p = &foo;
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// CHECK: store i8* bitcast (void (i32)* @_Z3fooi to i8*)
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void *vp1 = (void*)&foo;
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// CHECK: store i8* bitcast (void (i32)* @_Z3fooi to i8*)
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void *vp2 = (void*)foo;
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// CHECK: store i8* bitcast (void (i32)* @_Z3fooi to i8*)
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vp1 = (void*)&foo;
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// CHECK: store i8* bitcast (void (i32)* @_Z3fooi to i8*)
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vp1 = (void*)foo;
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}
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void bar(int m) __attribute__((overloadable, enable_if(m > 0, "")));
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void bar(int m) __attribute__((overloadable, enable_if(1, "")));
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// CHECK-LABEL: define{{.*}} void @test2
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void test2() {
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// CHECK: store void (i32)* @_Z3barUa9enable_ifILi1EEi
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void (*p)(int) = bar;
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// CHECK: store void (i32)* @_Z3barUa9enable_ifILi1EEi
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void (*p2)(int) = &bar;
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// CHECK: store void (i32)* @_Z3barUa9enable_ifILi1EEi
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p = bar;
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// CHECK: store void (i32)* @_Z3barUa9enable_ifILi1EEi
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p = &bar;
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// CHECK: store i8* bitcast (void (i32)* @_Z3barUa9enable_ifILi1EEi to i8*)
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void *vp1 = (void*)&bar;
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// CHECK: store i8* bitcast (void (i32)* @_Z3barUa9enable_ifILi1EEi to i8*)
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void *vp2 = (void*)bar;
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// CHECK: store i8* bitcast (void (i32)* @_Z3barUa9enable_ifILi1EEi to i8*)
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vp1 = (void*)&bar;
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// CHECK: store i8* bitcast (void (i32)* @_Z3barUa9enable_ifILi1EEi to i8*)
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vp1 = (void*)bar;
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}
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void baz(int m) __attribute__((overloadable, enable_if(1, "")));
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void baz(int m) __attribute__((overloadable));
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// CHECK-LABEL: define{{.*}} void @test3
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void test3() {
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// CHECK: store void (i32)* @_Z3bazUa9enable_ifILi1EEi
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void (*p)(int) = baz;
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// CHECK: store void (i32)* @_Z3bazUa9enable_ifILi1EEi
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void (*p2)(int) = &baz;
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// CHECK: store void (i32)* @_Z3bazUa9enable_ifILi1EEi
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p = baz;
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// CHECK: store void (i32)* @_Z3bazUa9enable_ifILi1EEi
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p = &baz;
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}
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enum { TRUEFACTS = 1 };
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void qux(int m) __attribute__((overloadable, enable_if(1, ""),
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enable_if(TRUEFACTS, "")));
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void qux(int m) __attribute__((overloadable, enable_if(1, "")));
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// CHECK-LABEL: define{{.*}} void @test4
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void test4() {
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// CHECK: store void (i32)* @_Z3quxUa9enable_ifILi1ELi1EEi
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void (*p)(int) = qux;
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// CHECK: store void (i32)* @_Z3quxUa9enable_ifILi1ELi1EEi
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void (*p2)(int) = &qux;
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// CHECK: store void (i32)* @_Z3quxUa9enable_ifILi1ELi1EEi
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p = qux;
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// CHECK: store void (i32)* @_Z3quxUa9enable_ifILi1ELi1EEi
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p = &qux;
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}
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// There was a bug where, when enable_if was present, overload resolution
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// wouldn't pay attention to lower-priority attributes.
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// (N.B. `foo` with pass_object_size should always be preferred)
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// CHECK-LABEL: define{{.*}} void @test5
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void test5() {
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int foo(char *i) __attribute__((enable_if(1, ""), overloadable));
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int foo(char *i __attribute__((pass_object_size(0))))
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__attribute__((enable_if(1, ""), overloadable));
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// CHECK: call i32 @_Z3fooUa9enable_ifILi1EEPcU17pass_object_size0
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foo((void*)0);
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}
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