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6367d98d3a
The dtors can be checked at compile-time; insert a runtime check for the monitor before finalizing the stack-allocated class object via druntime call. See issue #2515.
81 lines
1.6 KiB
D
81 lines
1.6 KiB
D
// For scope-allocated class objects, make sure the _d_callfinalizer()
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// druntime call is elided if the object has no dtors and no monitor.
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// RUN: %ldc -O3 -output-ll -of=%t.ll %s && FileCheck %s < %t.ll
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import core.stdc.stdio : printf;
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class Base
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{
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int val = 123;
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void foo() { val *= 3; }
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void bar() { synchronized(this) val *= 2; }
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}
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class WithDtor : Base
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{
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~this() {}
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}
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class WithImplicitDtor : Base
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{
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static struct S { int val; ~this() {} }
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S s;
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}
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// CHECK: define{{.*}} void @{{.*}}_D6gh251516noDtor_noMonitorFZv
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void noDtor_noMonitor()
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{
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scope b = new Base();
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b.foo();
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printf("%d\n", b.val);
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// CHECK-NOT: _d_callfinalizer
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// CHECK: ret void
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}
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// CHECK: define{{.*}} void @{{.*}}_D6gh251518noDtor_withMonitorFZv
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void noDtor_withMonitor()
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{
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scope b = new Base();
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b.bar();
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printf("%d\n", b.val);
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// CHECK: _d_callfinalizer
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// CHECK: ret void
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}
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// CHECK: define{{.*}} void @{{.*}}_D6gh25158withDtorFZv
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void withDtor()
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{
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scope Base b = new WithDtor();
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b.foo();
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printf("%d\n", b.val);
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// CHECK: _d_callfinalizer
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// CHECK: ret void
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}
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// CHECK: define{{.*}} void @{{.*}}_D6gh251516withImplicitDtorFZv
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void withImplicitDtor()
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{
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scope Base b = new WithImplicitDtor();
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b.foo();
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printf("%d\n", b.val);
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// CHECK: _d_callfinalizer
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// CHECK: ret void
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}
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/* Test a C++ class as well, which as of 2.077 isn't implicitly delete()d. */
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extern(C++) class CppClass
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{
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int val = 666;
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}
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// CHECK: define{{.*}} void @{{.*}}_D6gh25158cppClassFZv
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void cppClass()
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{
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scope c = new CppClass();
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printf("%d\n", c.val);
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// CHECK-NOT: _d_callfinalizer
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// CHECK: ret void
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}
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