bd36f7331a
This change adds support for bitfields CIR records can now contain bit fields. I’ve updated the `CIRGenBitFieldInfo` comment, which originally came from the incubator and was identical to the one in OGCodeGen, to better reflect the current implementation. Support for bitfields in unions big-endian architectures and `get` and `set` operations remains unimplemented and will be addressed in a future patch.
33 lines
1.0 KiB
C++
33 lines
1.0 KiB
C++
// 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;
|
|
}
|