================
@@ -0,0 +1,271 @@
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fclangir -emit-cir
-ffine-grained-bitfield-accesses %s -o %t.cir
+// RUN: FileCheck --input-file=%t.cir %s --check-prefix=CIR
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fclangir -emit-llvm
-ffine-grained-bitfield-accesses %s -o %t-cir.ll
+// RUN: FileCheck --input-file=%t-cir.ll %s --check-prefix=LLVM
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -emit-llvm
-ffine-grained-bitfield-accesses %s -o %t.ll
+// RUN: FileCheck --input-file=%t.ll %s --check-prefix=OGCG
+
+struct S1 {
+ unsigned f1:2;
+ unsigned f2:6;
+ unsigned f3:8;
+ unsigned f4:4;
+ unsigned f5:8;
+};
+
+// CIR-DAG: !rec_S1 = !cir.record<struct "S1" {!u8i, !u8i, !u16i}>
+// LLVM-DAG: %struct.S1 = type { i8, i8, i16 }
+// OGCG-DAG: %struct.S1 = type { i8, i8, i16 }
+
+struct S2 {
+ unsigned long f1:16;
+ unsigned long f2:16;
+ unsigned long f3:6;
+};
+
+// CIR-DAG: !rec_S2 = !cir.record<struct "S2" padded {!u16i, !u16i, !u8i,
!cir.array<!u8i x 3>}>
+// LLVM-DAG: %struct.S2 = type { i16, i16, i8, [3 x i8] }
+// OGCG-DAG: %struct.S2 = type { i16, i16, i8, [3 x i8] }
+
+struct S3 {
+ unsigned long f1:14;
+ unsigned long f2:18;
+ unsigned long f3:32;
+};
+
+// CIR-DAG: !rec_S3 = !cir.record<struct "S3" {!u32i, !u32i}>
+// LLVM-DAG: %struct.S3 = type { i32, i32 }
+// OGCG-DAG: %struct.S3 = type { i32, i32 }
+
+S1 a1;
+S2 a2;
+S3 a3;
+
+unsigned read8_1() {
+ return a1.f3;
+}
+
+// CIR-LABEL: @_Z7read8_1v
+// CIR: [[MEMBER:%.*]] = cir.get_member %1[1] {name = "f3"} :
!cir.ptr<!rec_S1> -> !cir.ptr<!u8i>
+// CIR: [[BITFI:%.*]] = cir.get_bitfield align(1) (#bfi_f3, [[MEMBER]] :
!cir.ptr<!u8i>) -> !u32i
+// CIR: cir.store [[BITFI]], {{.*}} : !u32i, !cir.ptr<!u32i>
+// CIR: [[RET:%.*]] = cir.load {{.*}} : !cir.ptr<!u32i>, !u32i
+// CIR: cir.return [[RET]] : !u32i
+
+// LLVM-LABEL: @_Z7read8_1v
+// LLVM: [[MEMBER:%.*]] = load i8, ptr getelementptr inbounds nuw (i8, ptr
{{.*}}, i64 1), align 1
+// LLVM: [[BFCAST:%.*]] = zext i8 [[MEMBER]] to i32
+// LLVM: store i32 [[BFCAST]], ptr {{.*}}, align 4
+// LLVM: [[RET:%.*]] = load i32, ptr {{.*}}, align 4
+// LLVM: ret i32 [[RET]]
+
+// OGCG-LABEL: @_Z7read8_1v
+// OGCG: [[BFLOAD:%.*]] = load i8, ptr getelementptr inbounds nuw (%struct.S1,
ptr {{.*}}, i32 0, i32 1), align 1
+// OGCG-NEXT: [[BFCAST:%.*]] = zext i8 [[BFLOAD]] to i32
+// OGCG-NEXT: ret i32 [[BFCAST]]
+
+void write8_1() {
+ a1.f3 = 3;
+}
+
+// CIR-LABEL: @_Z8write8_1v
+// CIR: [[CONST3:%.*]] = cir.const #cir.int<3> : !s32i
+// CIR: [[INT3:%.*]] = cir.cast(integral, [[CONST3]] : !s32i), !u32i
+// CIR: [[MEMBER:%.*]] = cir.get_member {{.*}}[1] {name = "f3"} :
!cir.ptr<!rec_S1> -> !cir.ptr<!u8i>
+// CIR: cir.set_bitfield align(1) (#bfi_f3, [[MEMBER]] : !cir.ptr<!u8i>,
[[INT3]] : !u32i) -> !u32i
+
+// LLVM-LABEL: @_Z8write8_1v
+// LLVM: store i8 3, ptr getelementptr inbounds nuw (i8, ptr {{.*}}, i64 1),
align 1
+// LLVM: ret void
+
+// OGCG-LABEL: @_Z8write8_1v
+// OGCG: store i8 3, ptr getelementptr inbounds nuw (%struct.S1, ptr {{.*}},
i32 0, i32 1), align 1
+// OGCG-NEXT: ret void
+
+unsigned read8_2() {
+
+ return a1.f5;
+}
+
+// CIR-LABEL: @_Z7read8_2v
+// CIR: [[MEMBER:%.*]] = cir.get_member {{.*}}[2] {name = "f5"} :
!cir.ptr<!rec_S1> -> !cir.ptr<!u16i>
+// CIR: [[BITFI:%.*]] = cir.get_bitfield align(2) (#bfi_f5, [[MEMBER]] :
!cir.ptr<!u16i>) -> !u32i
+// CIR: cir.store [[BITFI]], {{.*}} : !u32i, !cir.ptr<!u32i>
+// CIR: [[RET:%.*]] = cir.load {{.*}} : !cir.ptr<!u32i>, !u32i
+// CIR: cir.return [[RET]] : !u32i
+
+// LLVM-LABEL: @_Z7read8_2v
+// LLVM: [[BFLOAD:%.*]] = load i16, ptr getelementptr inbounds nuw (i8, ptr
{{.*}}, i64 2), align 2
+// LLVM: [[BFLSHR:%.*]] = lshr i16 [[BFLOAD]], 4
+// LLVM: [[BFCLEAR:%.*]] = and i16 [[BFLSHR]], 255
+// LLVM: [[BFCAST:%.*]] = zext i16 [[BFCLEAR]] to i32
+// LLVM: store i32 [[BFCAST]], ptr {{.*}}, align 4
+// LLVM: [[RET:%.*]] = load i32, ptr {{.*}}, align 4
+// LLVM: ret i32 [[RET]]
+
+// OGCG-LABEL: @_Z7read8_2v
+// OGCG: [[BFLOAD:%.*]] = load i16, ptr getelementptr inbounds nuw
(%struct.S1, ptr {{.*}}, i32 0, i32 2), align 2
+// OGCG-NEXT: [[BFLSHR:%.*]] = lshr i16 [[BFLOAD]], 4
+// OGCG-NEXT: [[BFCLEAR:%.*]] = and i16 [[BFLSHR]], 255
+// OGCG-NEXT: [[BFCAST:%.*]] = zext i16 [[BFCLEAR]] to i32
+// OGCG-NEXT: ret i32 [[BFCAST]]
+
+void write8_2() {
+ a1.f5 = 3;
+}
+
+// CIR-LABEL: @_Z8write8_2v
+// CIR: [[CONST3:%.*]] = cir.const #cir.int<3> : !s32i
+// CIR: [[INT3:%.*]] = cir.cast(integral, [[CONST3]] : !s32i), !u32i
+// CIR: [[MEMBER:%.*]] = cir.get_member {{.*}}[2] {name = "f5"} :
!cir.ptr<!rec_S1> -> !cir.ptr<!u16i>
+// CIR: cir.set_bitfield align(2) (#bfi_f5, %3 : !cir.ptr<!u16i>, {{.*}} :
!u32i) -> !u32i
+
+// LLVM-LABEL: @_Z8write8_2v
+// LLVM: [[BFLOAD:%.*]] = load i16, ptr getelementptr inbounds nuw (i8, ptr
{{.*}}, i64 2), align 2
+// LLVM: [[BFCLEAR:%.*]] = and i16 [[BFLOAD]], -4081
+// LLVM: [[BFSET:%.*]] = or i16 [[BFCLEAR]], 48
+// LLVM: store i16 [[BFSET]], ptr getelementptr inbounds nuw (i8, ptr {{.*}},
i64 2), align 2
+// LLVM: ret void
+
+// OGCG-LABEL: @_Z8write8_2v
+// OGCG: [[BFLOAD:%.*]] = load i16, ptr getelementptr inbounds nuw
(%struct.S1, ptr {{.*}}, i32 0, i32 2), align 2
+// OGCG-NEXT: [[BFCLEAR:%.*]] = and i16 [[BFLOAD]], -4081
+// OGCG-NEXT: [[BFSET:%.*]] = or i16 [[BFCLEAR]], 48
+// OGCG-NEXT: store i16 [[BFSET]], ptr getelementptr inbounds nuw (%struct.S1,
ptr {{.*}}, i32 0, i32 2), align 2
+// OGCG-NEXT: ret void
+
+unsigned read16_1() {
+ return a2.f1;
+}
+
+// CIR-LABEL: @_Z8read16_1v
+// CIR: [[MEMBER:%.*]] = cir.get_member {{.*}}[0] {name = "f1"} :
!cir.ptr<!rec_S2> -> !cir.ptr<!u16i>
+// CIR: [[BITFI:%.*]] = cir.get_bitfield align(8) (#bfi_f1, [[MEMBER]] :
!cir.ptr<!u16i>) -> !u64i
+// CIR: [[BFCAST:%.*]] = cir.cast(integral, [[BITFI]] : !u64i), !u32i
+// CIR: cir.store [[BFCAST]], {{.*}} : !u32i, !cir.ptr<!u32i>
+// CIR: [[RET:%.*]] = cir.load {{.*}} : !cir.ptr<!u32i>, !u32i
+// CIR: cir.return [[RET]] : !u32i
+
+// LLVM-LABEL: @_Z8read16_1v
+// LLVM: [[BFLOAD:%.*]] = load i16, ptr {{.*}}, align 8
+// LLVM: [[BFCAST:%.*]] = zext i16 [[BFLOAD]] to i64
+// LLVM: [[BF:%.*]] = trunc i64 [[BFCAST]] to i32
+// LLVM: store i32 [[BF]], ptr {{.*}}, align 4
+// LLVM: [[RET:%.*]] = load i32, ptr {{.*}}, align 4
+// LLVM: ret i32 [[RET]]
+
+// OGCG-LABEL: @_Z8read16_1v
+// OGCG: [[BFLOAD:%.*]] = load i16, ptr {{.*}}, align 8
+// OGCG-NEXT: [[BFCAST:%.*]] = zext i16 [[BFLOAD]] to i64
+// OGCG-NEXT: [[RET:%.*]] = trunc i64 [[BFCAST]] to i32
+// OGCG-NEXT: ret i32 [[RET]]
+
+unsigned read16_2() {
+ return a2.f2;
+}
+
+// CIR-LABEL: @_Z8read16_2v
+// CIR: [[MEMBER:%.*]] = cir.get_member {{.*}}[1] {name = "f2"} :
!cir.ptr<!rec_S2> -> !cir.ptr<!u16i>
+// CIR: [[BITFI:%.*]] = cir.get_bitfield align(2) (#bfi_f2, [[MEMBER]] :
!cir.ptr<!u16i>) -> !u64i
+// CIR: [[BFCAST:%.*]] = cir.cast(integral, [[BITFI]] : !u64i), !u32i
+// CIR: cir.store [[BFCAST]], {{.*}} : !u32i, !cir.ptr<!u32i>
+// CIR: [[RET:%.*]] = cir.load {{.*}} : !cir.ptr<!u32i>, !u32i
+// CIR: cir.return [[RET]] : !u32i
+
+// LLVM-LABEL: @_Z8read16_2v
+// LLVM: [[BFLOAD:%.*]] = load i16, ptr getelementptr inbounds nuw (i8, ptr
{{.*}}, i64 2), align 2
----------------
Andres-Salamanca wrote:
DONE
https://github.com/llvm/llvm-project/pull/150687
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