cba47b4978
Summary: Emit !llvm.mem.parallel_loop_access metadata for memory accesses even if the parallel loop is not the top on the loop stack. Fixes llvm.org/PR37558. Reviewers: ABataev, hfinkel, amusman, tyler.nowicki Reviewed By: hfinkel Subscribers: Meinersbur, hfinkel, cfe-commits Differential Revision: https://reviews.llvm.org/D48808 llvm-svn: 338810
22 lines
993 B
C++
22 lines
993 B
C++
// RUN: %clang_cc1 -triple x86_64-apple-darwin -std=c++11 -emit-llvm -o - %s | FileCheck %s
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// Verify that the inner access is tagged with a parallel_loop_access
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// for the inner and outer loop using a list.
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void vectorize_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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#pragma clang loop vectorize(assume_safety) interleave(disable) unroll(disable)
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for (int j = 0; j < Length; ++j)
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List[i * Length + j] = (i + j) * 2;
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}
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}
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// CHECK: %[[MUL:.+]] = mul
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// CHECK: store i32 %[[MUL]], i32* %{{.+}}, !llvm.mem.parallel_loop_access ![[PARALLEL_LIST:[0-9]+]]
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// CHECK: br label %{{.+}}, !llvm.loop ![[INNER_LOOPID:[0-9]+]]
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// CHECK: br label %{{.+}}, !llvm.loop ![[OUTER_LOOPID:[0-9]+]]
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// CHECK: ![[OUTER_LOOPID]] = distinct !{![[OUTER_LOOPID]],
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// CHECK: ![[PARALLEL_LIST]] = !{![[OUTER_LOOPID]], ![[INNER_LOOPID]]}
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// CHECK: ![[INNER_LOOPID]] = distinct !{![[INNER_LOOPID]],
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