1 files changed, 32 insertions, 0 deletions
diff --git a/clang/test/CIR/CodeGen/bitfields.cpp b/clang/test/CIR/CodeGen/bitfields.cpp
new file mode 100644
index 000000000000..762d24988474
--- /dev/null
+++ b/clang/test/CIR/CodeGen/bitfields.cpp
@@ -0,0 +1,32 @@
+// RUN: %clang_cc1 -std=c++17 -triple x86_64-unknown-linux-gnu -fclangir -emit-cir %s -o %t.cir
+// RUN: FileCheck --input-file=%t.cir %s --check-prefix=CIR
+// RUN: %clang_cc1 -std=c++17 -triple x86_64-unknown-linux-gnu -fclangir -emit-llvm %s -o %t-cir.ll
+// RUN: FileCheck --input-file=%t-cir.ll %s --check-prefix=LLVM
+// RUN: %clang_cc1 -std=c++17 -triple x86_64-unknown-linux-gnu -emit-llvm %s -o %t.ll
+// RUN: FileCheck --input-file=%t.ll %s --check-prefix=OGCG
+
+typedef struct {
+  int a : 4;
+  int b : 27;
+  int c : 17;
+  int d : 2;
+  int e : 15;
+  unsigned f; // type other than int above, not a bitfield
+} S;
+// CIR-DAG:  !rec_S = !cir.record<struct "S" {!u64i, !u16i, !u32i}>
+// LLVM-DAG: %struct.S = type { i64, i16, i32 }
+// OGCG-DAG: %struct.S = type { i64, i16, i32 }
+
+typedef struct {
+  int a : 3;  // one bitfield with size < 8
+  unsigned b;
+} T;
+
+// CIR-DAG:  !rec_T = !cir.record<struct "T" {!u8i, !u32i}>
+// LLVM-DAG: %struct.T = type { i8, i32 }
+// OGCG-DAG: %struct.T = type { i8, i32 }
+
+void def() {
+  S s;
+  T t;
+}