forked from OSchip/llvm-project
118 lines
4.0 KiB
C++
118 lines
4.0 KiB
C++
// RUN: %clang_cc1 -triple=x86_64-apple-darwin10 -emit-llvm -fexceptions %s -o - |FileCheck %s
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// RUN: %clang_cc1 -triple=x86_64-apple-darwin10 -emit-llvm %s -o - |FileCheck -check-prefix NOEXC %s
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struct A {
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A();
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~A();
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};
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struct B { B(); ~B(); };
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struct C { void *field; };
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struct D { ~D(); };
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// CHECK: @__dso_handle = external unnamed_addr global i8*
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// CHECK: @c = global %struct.C zeroinitializer, align 8
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// It's okay if we ever implement the IR-generation optimization to remove this.
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// CHECK: @_ZN5test3L3varE = internal constant i8* getelementptr inbounds ([7 x i8]*
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// PR6205: The casts should not require global initializers
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// CHECK: @_ZN6PR59741cE = external global %"struct.PR5974::C"
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// CHECK: @_ZN6PR59741aE = global %"struct.PR5974::A"* getelementptr inbounds (%"struct.PR5974::C"* @_ZN6PR59741cE, i32 0, i32 0)
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// CHECK: @_ZN6PR59741bE = global %"struct.PR5974::A"* bitcast (i8* getelementptr (i8* bitcast (%"struct.PR5974::C"* @_ZN6PR59741cE to i8*), i64 4) to %"struct.PR5974::A"*), align 8
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// CHECK: call void @_ZN1AC1Ev(%struct.A* @a)
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// CHECK: call i32 @__cxa_atexit(void (i8*)* bitcast (void (%struct.A*)* @_ZN1AD1Ev to void (i8*)*), i8* getelementptr inbounds (%struct.A* @a, i32 0, i32 0), i8* bitcast (i8** @__dso_handle to i8*))
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A a;
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// CHECK: call void @_ZN1BC1Ev(%struct.A* @b)
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// CHECK: call i32 @__cxa_atexit(void (i8*)* bitcast (void (%struct.A*)* @_ZN1BD1Ev to void (i8*)*), i8* getelementptr inbounds (%struct.A* @b, i32 0, i32 0), i8* bitcast (i8** @__dso_handle to i8*))
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B b;
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// PR6205: this should not require a global initializer
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// CHECK-NOT: call void @_ZN1CC1Ev(%struct.C* @c)
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C c;
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// CHECK: call i32 @__cxa_atexit(void (i8*)* bitcast (void (%struct.A*)* @_ZN1DD1Ev to void (i8*)*), i8* getelementptr inbounds (%struct.A* @d, i32 0, i32 0), i8* bitcast (i8** @__dso_handle to i8*))
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D d;
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// <rdar://problem/7458115>
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namespace test1 {
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int f();
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const int x = f(); // This has side-effects and gets emitted immediately.
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const int y = x - 1; // This gets deferred.
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const int z = ~y; // This also gets deferred, but gets "undeferred" before y.
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int test() { return z; }
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// CHECK: define i32 @_ZN5test14testEv()
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// All of these initializers end up delayed, so we check them later.
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}
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// <rdar://problem/8246444>
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namespace test2 {
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struct allocator { allocator(); ~allocator(); };
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struct A { A(const allocator &a = allocator()); ~A(); };
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A a;
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// CHECK: call void @_ZN5test29allocatorC1Ev(
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// CHECK: invoke void @_ZN5test21AC1ERKNS_9allocatorE(
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// CHECK: call void @_ZN5test29allocatorD1Ev(
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// CHECK: call i32 @__cxa_atexit({{.*}} @_ZN5test21AD1Ev {{.*}} @_ZN5test21aE
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}
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namespace test3 {
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// Tested at the beginning of the file.
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const char * const var = "string";
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extern const char * const var;
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const char *test() { return var; }
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}
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namespace PR5974 {
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struct A { int a; };
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struct B { int b; };
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struct C : A, B { int c; };
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extern C c;
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// These should not require global initializers.
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A* a = &c;
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B* b = &c;
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}
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// CHECK: define internal void [[TEST1_Z_INIT:@.*]]()
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// CHECK: load i32* @_ZN5test1L1yE
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// CHECK-NEXT: xor
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// CHECK-NEXT: store i32 {{.*}}, i32* @_ZN5test1L1zE
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// CHECK: define internal void [[TEST1_Y_INIT:@.*]]()
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// CHECK: load i32* @_ZN5test1L1xE
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// CHECK-NEXT: sub
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// CHECK-NEXT: store i32 {{.*}}, i32* @_ZN5test1L1yE
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// PR9570: the indirect field shouldn't crash IR gen.
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namespace test5 {
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static union {
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unsigned bar[4096] __attribute__((aligned(128)));
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};
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}
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namespace test6 {
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struct A {
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A();
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};
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extern int foo();
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// This needs an initialization function but not guard variables.
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__attribute__((weak)) int x = foo();
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}
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// At the end of the file, we check that y is initialized before z.
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// CHECK: define internal void @_GLOBAL__I_a() section "__TEXT,__StaticInit,regular,pure_instructions" {
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// CHECK: call void [[TEST1_Y_INIT]]
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// CHECK: call void [[TEST1_Z_INIT]]
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// rdar://problem/8090834: this should be nounwind
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// CHECK-NOEXC: define internal void @_GLOBAL__I_a() nounwind section "__TEXT,__StaticInit,regular,pure_instructions" {
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