derek.holloway
7502bf64a4
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34 lines
1.7 KiB
C
34 lines
1.7 KiB
C
// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fclangir -emit-cir %s -o %t.cir
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// RUN: FileCheck --input-file=%t.cir %s --check-prefix=CIR
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// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fclangir -emit-llvm %s -o %t-cir.ll
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// RUN: FileCheck --input-file=%t-cir.ll %s --check-prefix=LLVM
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// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -emit-llvm %s -o %t.ll
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// RUN: FileCheck --input-file=%t.ll %s --check-prefix=OGCG
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char buffer[32] = "This is a largely unused buffer";
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// __builtin___clear_cache always maps to @llvm.clear_cache.p0, but what
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// each back-end produces is different, and this is tested in LLVM
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// CIR-LABEL: main
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// CIR: %[[VAL_1:.*]] = cir.get_global @buffer : !cir.ptr<!cir.array<!s8i x 32>>
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// CIR: %[[VAL_2:.*]] = cir.cast array_to_ptrdecay %[[VAL_1]] : !cir.ptr<!cir.array<!s8i x 32>> -> !cir.ptr<!s8i>
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// CIR: %[[VAL_3:.*]] = cir.cast bitcast %[[VAL_2]] : !cir.ptr<!s8i> -> !cir.ptr<!void>
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// CIR: %[[VAL_4:.*]] = cir.get_global @buffer : !cir.ptr<!cir.array<!s8i x 32>>
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// CIR: %[[VAL_5:.*]] = cir.cast array_to_ptrdecay %[[VAL_4]] : !cir.ptr<!cir.array<!s8i x 32>>
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// CIR: %[[VAL_6:.*]] = cir.const #cir.int<32> : !s32i
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// CIR: %[[VAL_7:.*]] = cir.ptr_stride %[[VAL_5]], %[[VAL_6]] : (!cir.ptr<!s8i>, !s32i) -> !cir.ptr<!s8i>
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// CIR: %[[VAL_8:.*]] = cir.cast bitcast %[[VAL_7]] : !cir.ptr<!s8i> -> !cir.ptr<!void>
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// CIR: cir.clear_cache %[[VAL_3]], %[[VAL_8]] : !cir.ptr<!void>
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// LLVM-LABEL: main
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// LLVM: call void @llvm.clear_cache.p0(ptr @buffer, ptr getelementptr inbounds nuw (i8, ptr @buffer, i64 32))
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// OGCG-LABEL: main
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// OGCG: call void @llvm.clear_cache.p0(ptr @buffer, ptr getelementptr inbounds nuw (i8, ptr @buffer, i64 32))
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int main(void) {
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__builtin___clear_cache(buffer, buffer + 32);
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return 0;
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}
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