| 1 | // RUN: %clang_cc1 -triple x86_64-apple-darwin -std=c++11 -emit-llvm -o - %s | FileCheck %s |
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| 2 | |
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| 3 | // Verify that the outer loop has the llvm.access.group property for the |
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| 4 | // accesses outside and inside the inner loop, even when the inner loop |
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| 5 | // is not perfectly nested. |
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| 6 | void vectorize_imperfectly_nested_test(int *List, int Length) { |
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| 7 | #pragma clang loop vectorize(assume_safety) interleave(disable) unroll(disable) |
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| 8 | for (int i = 0; i < Length; ++i) { |
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| 9 | List[i * Length] = 42; |
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| 10 | #pragma clang loop vectorize(assume_safety) interleave(disable) unroll(disable) |
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| 11 | for (int j = 1; j < Length - 1; ++j) |
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| 12 | List[i * Length + j] = (i + j) * 2; |
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| 13 | List[(i + 1) * Length - 1] = 21; |
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| 14 | } |
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| 15 | } |
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| 16 | |
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| 17 | |
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| 18 | // CHECK: load i32, i32* %Length.addr, align 4, !llvm.access.group ![[ACCESS_GROUP_2:[0-9]+]] |
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| 19 | |
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| 20 | // CHECK: %[[MUL:.+]] = mul nsw i32 %add, 2 |
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| 21 | // CHECK: store i32 %[[MUL]], i32* %{{.+}}, !llvm.access.group ![[ACCESS_GROUP_3:[0-9]+]] |
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| 22 | // CHECK: br label %{{.+}}, !llvm.loop ![[INNER_LOOPID:[0-9]+]] |
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| 23 | // CHECK: store i32 21, i32* %{{.+}}, !llvm.access.group ![[ACCESS_GROUP_2]] |
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| 24 | // CHECK: br label %{{.+}}, !llvm.loop ![[OUTER_LOOPID:[0-9]+]] |
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| 25 | |
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| 26 | // CHECK: ![[ACCESS_GROUP_2]] = distinct !{} |
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| 27 | // CHECK: ![[ACCESS_GROUP_LIST_3:[0-9]+]] = !{![[ACCESS_GROUP_2]], ![[ACCESS_GROUP_4:[0-9]+]]} |
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| 28 | // CHECK: ![[ACCESS_GROUP_4]] = distinct !{} |
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| 29 | // CHECK: ![[INNER_LOOPID]] = distinct !{![[INNER_LOOPID]], {{.*}} ![[PARALLEL_ACCESSES_8:[0-9]+]]} |
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| 30 | // CHECK: ![[PARALLEL_ACCESSES_8]] = !{!"llvm.loop.parallel_accesses", ![[ACCESS_GROUP_4]]} |
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| 31 | // CHECK: ![[OUTER_LOOPID]] = distinct !{![[OUTER_LOOPID]], {{.*}} ![[PARALLEL_ACCESSES_10:[0-9]+]]} |
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| 32 | // CHECK: ![[PARALLEL_ACCESSES_10]] = !{!"llvm.loop.parallel_accesses", ![[ACCESS_GROUP_2]]} |
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| 33 | |
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