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[CIR][CIRGen] Support for builtin __atomic_thread_fence
Resolves #1274 Implements atomic thread fence synchronization primitive corresponding to `atomic.thread_fence` CIR.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,93 @@ | ||
| // RUN: %clang_cc1 -triple aarch64-none-linux-android21 -fclangir -emit-cir %s -o %t.cir | ||
| // RUN: FileCheck --check-prefix=CIR --input-file=%t.cir %s | ||
| // UN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fclangir -emit-llvm %s -o %t.ll | ||
| // UN: FileCheck --check-prefix=LLVM --input-file=%t.ll %s | ||
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| struct Data { | ||
| int value; | ||
| void *ptr; | ||
| }; | ||
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| typedef struct Data *DataPtr; | ||
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| void applyThreadFence() { | ||
| __atomic_thread_fence(5); | ||
| } | ||
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| // CIR-LABEL: cir.func no_proto @applyThreadFence | ||
| // CIR: %0 = cir.const #cir.int<5> : !s32i | ||
| // CIR: cir.return | ||
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| void applySignalFence() { | ||
| __atomic_signal_fence(5); | ||
| } | ||
| // CIR-LABEL: cir.func no_proto @applySignalFence | ||
| // CIR: %0 = cir.const #cir.int<5> : !s32i | ||
| // CIR: cir.return | ||
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| void modifyWithThreadFence(DataPtr d) { | ||
| __atomic_thread_fence(5); | ||
| d->value = 42; | ||
| } | ||
| // CIR-LABEL: cir.func @modifyWithThreadFence | ||
| // CIR: %0 = cir.alloca !cir.ptr<!ty_Data>, !cir.ptr<!cir.ptr<!ty_Data>>, ["d", init] {alignment = 8 : i64} | ||
| // CIR: cir.store %arg0, %0 : !cir.ptr<!ty_Data>, !cir.ptr<!cir.ptr<!ty_Data>> | ||
| // CIR: %1 = cir.const #cir.int<5> : !s32i | ||
| // CIR: %2 = cir.const #cir.int<42> : !s32i | ||
| // CIR: %3 = cir.load %0 : !cir.ptr<!cir.ptr<!ty_Data>>, !cir.ptr<!ty_Data> | ||
| // CIR: %4 = cir.get_member %3[0] {name = "value"} : !cir.ptr<!ty_Data> -> !cir.ptr<!s32i> | ||
| // CIR: cir.store %2, %4 : !s32i, !cir.ptr<!s32i> | ||
| // CIR: cir.return | ||
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| void modifyWithSignalFence(DataPtr d) { | ||
| __atomic_signal_fence(5); | ||
| d->value = 24; | ||
| } | ||
| // CIR-LABEL: cir.func @modifyWithSignalFence | ||
| // %0 = cir.alloca !cir.ptr<!ty_Data>, !cir.ptr<!cir.ptr<!ty_Data>>, ["d", init] {alignment = 8 : i64} | ||
| // cir.store %arg0, %0 : !cir.ptr<!ty_Data>, !cir.ptr<!cir.ptr<!ty_Data>> | ||
| // %1 = cir.const #cir.int<5> : !s32i | ||
| // %2 = cir.const #cir.int<24> : !s32i | ||
| // %3 = cir.load %0 : !cir.ptr<!cir.ptr<!ty_Data>>, !cir.ptr<!ty_Data> | ||
| // %4 = cir.get_member %3[0] {name = "value"} : !cir.ptr<!ty_Data> -> !cir.ptr<!s32i> | ||
| // cir.store %2, %4 : !s32i, !cir.ptr<!s32i> | ||
| // cir.return | ||
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| void loadWithThreadFence(DataPtr d) { | ||
| __atomic_thread_fence(5); | ||
| __atomic_load_n(&d->ptr, 5); | ||
| } | ||
| // CIR-LABEL: cir.func @loadWithThreadFence | ||
| // %0 = cir.alloca !cir.ptr<!ty_Data>, !cir.ptr<!cir.ptr<!ty_Data>>, ["d", init] {alignment = 8 : i64} | ||
| // %1 = cir.alloca !cir.ptr<!void>, !cir.ptr<!cir.ptr<!void>>, ["atomic-temp"] {alignment = 8 : i64} | ||
| // cir.store %arg0, %0 : !cir.ptr<!ty_Data>, !cir.ptr<!cir.ptr<!ty_Data>> | ||
| // %2 = cir.const #cir.int<5> : !s32i | ||
| // %3 = cir.load %0 : !cir.ptr<!cir.ptr<!ty_Data>>, !cir.ptr<!ty_Data> | ||
| // %4 = cir.get_member %3[1] {name = "ptr"} : !cir.ptr<!ty_Data> -> !cir.ptr<!cir.ptr<!void>> | ||
| // %5 = cir.const #cir.int<5> : !s32i | ||
| // %6 = cir.cast(bitcast, %4 : !cir.ptr<!cir.ptr<!void>>), !cir.ptr<!u64i> | ||
| // %7 = cir.load atomic(seq_cst) %6 : !cir.ptr<!u64i>, !u64i | ||
| // %8 = cir.cast(bitcast, %1 : !cir.ptr<!cir.ptr<!void>>), !cir.ptr<!u64i> | ||
| // cir.store %7, %8 : !u64i, !cir.ptr<!u64i> | ||
| // %9 = cir.load %1 : !cir.ptr<!cir.ptr<!void>>, !cir.ptr<!void> | ||
| // cir.return | ||
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| void loadWithSignalFence(DataPtr d) { | ||
| __atomic_signal_fence(5); | ||
| __atomic_load_n(&d->ptr, 5); | ||
| } | ||
| // CIR-LABEL: cir.func @loadWithSignalFence | ||
| // %0 = cir.alloca !cir.ptr<!ty_Data>, !cir.ptr<!cir.ptr<!ty_Data>>, ["d", init] {alignment = 8 : i64} | ||
| // %1 = cir.alloca !cir.ptr<!void>, !cir.ptr<!cir.ptr<!void>>, ["atomic-temp"] {alignment = 8 : i64} | ||
| // cir.store %arg0, %0 : !cir.ptr<!ty_Data>, !cir.ptr<!cir.ptr<!ty_Data>> | ||
| // %2 = cir.const #cir.int<5> : !s32i | ||
| // %3 = cir.load %0 : !cir.ptr<!cir.ptr<!ty_Data>>, !cir.ptr<!ty_Data> | ||
| // %4 = cir.get_member %3[1] {name = "ptr"} : !cir.ptr<!ty_Data> -> !cir.ptr<!cir.ptr<!void>> | ||
| // %5 = cir.const #cir.int<5> : !s32i | ||
| // %6 = cir.cast(bitcast, %4 : !cir.ptr<!cir.ptr<!void>>), !cir.ptr<!u64i> | ||
| // %7 = cir.load atomic(seq_cst) %6 : !cir.ptr<!u64i>, !u64i | ||
| // %8 = cir.cast(bitcast, %1 : !cir.ptr<!cir.ptr<!void>>), !cir.ptr<!u64i> | ||
| // cir.store %7, %8 : !u64i, !cir.ptr<!u64i> | ||
| // %9 = cir.load %1 : !cir.ptr<!cir.ptr<!void>>, !cir.ptr<!void> | ||
| // cir.return |