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130e93cc26
Since C++14 has been released for about nine years and most standard libraries have implemented sized deallocation functions, it's time to make this feature default again. This is another try of https://reviews.llvm.org/D112921. The original commit cf5a8b4 was reverted by 2e5035a due to some failures (see #83774). Fixes #60061
68 lines
2.1 KiB
C++
68 lines
2.1 KiB
C++
// RUN: %clang_cc1 -triple i686-pc-linux-gnu %s -o - -emit-llvm -verify | FileCheck %s
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// expected-no-diagnostics
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typedef __typeof(sizeof(int)) size_t;
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namespace test1 {
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struct A { void operator delete(void*,size_t); int x; };
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// CHECK-LABEL: define{{.*}} void @_ZN5test11aEPNS_1AE(
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void a(A *x) {
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// CHECK: load
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// CHECK-NEXT: icmp eq {{.*}}, null
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// CHECK-NEXT: br i1
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// CHECK: call void @_ZN5test11AdlEPvj(ptr noundef %{{.*}}, i32 noundef 4)
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delete x;
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}
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}
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// Check that we make cookies for the two-arg delete even when using
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// the global allocator and deallocator.
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namespace test2 {
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struct A {
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int x;
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void *operator new[](size_t);
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void operator delete[](void *, size_t);
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};
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// CHECK: define{{.*}} ptr @_ZN5test24testEv()
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A *test() {
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// CHECK: [[NEW:%.*]] = call noalias noundef nonnull ptr @_Znaj(i32 noundef 44)
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// CHECK-NEXT: store i32 10, ptr [[NEW]]
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// CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds i8, ptr [[NEW]], i32 4
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// CHECK-NEXT: ret ptr [[T1]]
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return ::new A[10];
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}
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// CHECK-LABEL: define{{.*}} void @_ZN5test24testEPNS_1AE(
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void test(A *p) {
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// CHECK: [[P:%.*]] = alloca ptr, align 4
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// CHECK-NEXT: store ptr {{%.*}}, ptr [[P]], align 4
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// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[P]], align 4
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// CHECK-NEXT: [[T1:%.*]] = icmp eq ptr [[T0]], null
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// CHECK-NEXT: br i1 [[T1]],
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// CHECK: [[T3:%.*]] = getelementptr inbounds i8, ptr [[T0]], i32 -4
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// CHECK-NEXT: [[T5:%.*]] = load i32, ptr [[T3]]
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// CHECK-NEXT: [[T6:%.*]] = mul i32 4, [[T5]]
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// CHECK-NEXT: [[T7:%.*]] = add i32 [[T6]], 4
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// CHECK-NEXT: call void @_ZdaPvj(ptr noundef [[T3]], i32 noundef [[T7]])
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// CHECK-NEXT: br label
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::delete[] p;
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}
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}
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namespace test3 {
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struct A {
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int x;
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void operator delete[](void *, size_t);
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};
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struct B : A {};
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// CHECK-LABEL: define{{.*}} void @_ZN5test34testEv()
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void test() {
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// CHECK: [[CALL:%.*]] = call noalias noundef nonnull ptr @_Znaj(i32 noundef 24)
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// CHECK-NEXT: store i32 5
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(void) new B[5];
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}
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}
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