34 lines
1.7 KiB
C++
34 lines
1.7 KiB
C++
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// RUN: %clang_cc1 -triple x86_64-apple-darwin -std=c++11 -emit-llvm -o - %s | FileCheck %s
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// Verify that the outer loop has the llvm.access.group property for the
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// accesses outside and inside the inner loop, even when the inner loop
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// is not perfectly nested.
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void vectorize_imperfectly_nested_test(int *List, int Length) {
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#pragma clang loop vectorize(assume_safety) interleave(disable) unroll(disable)
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for (int i = 0; i < Length; ++i) {
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List[i * Length] = 42;
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#pragma clang loop vectorize(assume_safety) interleave(disable) unroll(disable)
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for (int j = 1; j < Length - 1; ++j)
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List[i * Length + j] = (i + j) * 2;
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List[(i + 1) * Length - 1] = 21;
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}
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}
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// CHECK: load i32, i32* %Length.addr, align 4, !llvm.access.group ![[ACCESS_GROUP_2:[0-9]+]]
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// CHECK: %[[MUL:.+]] = mul nsw i32 %add, 2
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// CHECK: store i32 %[[MUL]], i32* %{{.+}}, !llvm.access.group ![[ACCESS_GROUP_3:[0-9]+]]
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// CHECK: br label %{{.+}}, !llvm.loop ![[INNER_LOOPID:[0-9]+]]
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// CHECK: store i32 21, i32* %{{.+}}, !llvm.access.group ![[ACCESS_GROUP_2]]
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// CHECK: br label %{{.+}}, !llvm.loop ![[OUTER_LOOPID:[0-9]+]]
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// CHECK: ![[ACCESS_GROUP_2]] = distinct !{}
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// CHECK: ![[ACCESS_GROUP_LIST_3:[0-9]+]] = !{![[ACCESS_GROUP_2]], ![[ACCESS_GROUP_4:[0-9]+]]}
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// CHECK: ![[ACCESS_GROUP_4]] = distinct !{}
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// CHECK: ![[INNER_LOOPID]] = distinct !{![[INNER_LOOPID]], [[MP:![0-9]+]], ![[PARALLEL_ACCESSES_8:[0-9]+]]
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// CHECK: [[MP]] = !{!"llvm.loop.mustprogress"}
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// CHECK: ![[PARALLEL_ACCESSES_8]] = !{!"llvm.loop.parallel_accesses", ![[ACCESS_GROUP_4]]}
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// CHECK: ![[OUTER_LOOPID]] = distinct !{![[OUTER_LOOPID]], [[MP]], ![[PARALLEL_ACCESSES_10:[0-9]+]]
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// CHECK: ![[PARALLEL_ACCESSES_10]] = !{!"llvm.loop.parallel_accesses", ![[ACCESS_GROUP_2]]}
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