72 lines
2.3 KiB
C++
72 lines
2.3 KiB
C++
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// RUN: %clang_cc1 -emit-llvm %s -o - -triple=i386-pc-win32 | FileCheck %s
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struct ClassWithoutDtor {
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char x;
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};
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void check_array_no_cookies() {
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// CHECK: define dso_local void @"?check_array_no_cookies@@YAXXZ"() [[NUW:#[0-9]+]]
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// CHECK: call noalias nonnull i8* @"??_U@YAPAXI@Z"(i32 42)
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ClassWithoutDtor *array = new ClassWithoutDtor[42];
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// CHECK: call void @"??_V@YAXPAX@Z"(
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delete [] array;
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}
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struct ClassWithDtor {
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char x;
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~ClassWithDtor() {}
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};
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void check_array_cookies_simple() {
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// CHECK: define {{.*}} @"?check_array_cookies_simple@@YAXXZ"()
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ClassWithDtor *array = new ClassWithDtor[42];
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// CHECK: [[ALLOCATED:%.*]] = call noalias nonnull i8* @"??_U@YAPAXI@Z"(i32 46)
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// 46 = 42 + size of cookie (4)
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// CHECK: [[COOKIE:%.*]] = bitcast i8* [[ALLOCATED]] to i32*
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// CHECK: store i32 42, i32* [[COOKIE]]
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// CHECK: [[ARRAY:%.*]] = getelementptr inbounds i8, i8* [[ALLOCATED]], i32 4
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// CHECK: bitcast i8* [[ARRAY]] to [[CLASS:%.*]]*
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delete [] array;
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// CHECK: [[ARRAY_AS_CHAR:%.*]] = bitcast [[CLASS]]* {{%.*}} to i8*
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// CHECK: getelementptr inbounds i8, i8* [[ARRAY_AS_CHAR]], i32 -4
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}
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struct __attribute__((aligned(8))) ClassWithAlignment {
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// FIXME: replace __attribute__((aligned(8))) with __declspec(align(8)) once
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// http://llvm.org/bugs/show_bug.cgi?id=12631 is fixed.
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int *x, *y;
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~ClassWithAlignment() {}
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};
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void check_array_cookies_aligned() {
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// CHECK: define {{.*}} @"?check_array_cookies_aligned@@YAXXZ"()
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ClassWithAlignment *array = new ClassWithAlignment[42];
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// CHECK: [[ALLOCATED:%.*]] = call noalias nonnull i8* @"??_U@YAPAXI@Z"(i32 344)
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// 344 = 42*8 + size of cookie (8, due to alignment)
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// CHECK: [[COOKIE:%.*]] = bitcast i8* [[ALLOCATED]] to i32*
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// CHECK: store i32 42, i32* [[COOKIE]]
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// CHECK: [[ARRAY:%.*]] = getelementptr inbounds i8, i8* [[ALLOCATED]], i32 8
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// CHECK: bitcast i8* [[ARRAY]] to [[CLASS:%.*]]*
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delete [] array;
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// CHECK: [[ARRAY_AS_CHAR:%.*]] = bitcast [[CLASS]]*
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// CHECK: getelementptr inbounds i8, i8* [[ARRAY_AS_CHAR]], i32 -8
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}
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namespace PR23990 {
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struct S {
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char x[42];
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void operator delete[](void *p, __SIZE_TYPE__);
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// CHECK-LABEL: define dso_local void @"?delete_s@PR23990@@YAXPAUS@1@@Z"(
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// CHECK: call void @"??_VS@PR23990@@SAXPAXI@Z"(i8* {{.*}}, i32 42)
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};
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void delete_s(S *s) { delete[] s; }
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}
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// CHECK: attributes [[NUW]] = { noinline nounwind{{.*}} }
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