mirror of
https://github.com/intel/llvm.git
synced 2026-01-14 11:57:39 +08:00
a22834a4d2
This adds handling for null base class initialization, but only for the trivial case where the class is empty. This also moves emitCXXConstructExpr to CIRGenExprCXX.cpp for consistency with classic codegen and the incubator repo.
32 lines
1.1 KiB
C++
32 lines
1.1 KiB
C++
// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fclangir -emit-cir %s -o %t.cir
|
|
// RUN: FileCheck --input-file=%t.cir --check-prefix=CIR %s
|
|
// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fclangir -emit-llvm %s -o %t-cir.ll
|
|
// RUN: FileCheck --input-file=%t-cir.ll --check-prefix=LLVM %s
|
|
// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -emit-llvm %s -o %t.ll
|
|
// RUN: FileCheck --input-file=%t.ll --check-prefix=OGCG %s
|
|
|
|
struct A {
|
|
A() = default;
|
|
A(int); // This constructor triggers the null base class initialization.
|
|
};
|
|
|
|
struct B : A {
|
|
};
|
|
|
|
void test_empty_base_null_init() {
|
|
B{};
|
|
}
|
|
|
|
// CIR: cir.func {{.*}} @_Z25test_empty_base_null_initv()
|
|
// CIR-NEXT: %[[B_ADDR:.*]] = cir.alloca !rec_B, !cir.ptr<!rec_B>, ["agg.tmp.ensured"]
|
|
// CIR-NEXT: %[[A_ADDR:.*]] = cir.base_class_addr %[[B_ADDR]] : !cir.ptr<!rec_B> nonnull [0] -> !cir.ptr<!rec_A>
|
|
|
|
// LLVM: define{{.*}} @_Z25test_empty_base_null_initv()
|
|
// LLVM-NEXT: %[[B:.*]] = alloca %struct.B
|
|
// LLVM-NEXT: ret void
|
|
|
|
// OGCG: define{{.*}} @_Z25test_empty_base_null_initv()
|
|
// OGCG-NEXT: entry:
|
|
// OGCG-NEXT: %[[B:.*]] = alloca %struct.B
|
|
// OGCG-NEXT: ret void
|