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79 lines
2.4 KiB
79 lines
2.4 KiB
; RUN: opt -always-inline -globalopt -S < %s | FileCheck %s
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;
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; static void __attribute__((always_inline)) callee(long n, double A[static const restrict n], long i) {
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; for (long j = 0; j < n; j += 1)
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; A[i * n + j] = 42;
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; }
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;
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; void caller(long n, double A[static const restrict n]) {
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; for (long i = 0; i < n; i += 1)
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; callee(n, A, i);
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; }
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;
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; Check that the access groups (llvm.access.group) are correctly merged.
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;
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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define internal void @callee(i64 %n, double* noalias nonnull %A, i64 %i) #0 {
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entry:
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br label %for.cond
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for.cond:
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%j.0 = phi i64 [ 0, %entry ], [ %add1, %for.body ]
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%cmp = icmp slt i64 %j.0, %n
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br i1 %cmp, label %for.body, label %for.end
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for.body:
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%mul = mul nsw i64 %i, %n
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%add = add nsw i64 %mul, %j.0
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%arrayidx = getelementptr inbounds double, double* %A, i64 %add
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store double 4.200000e+01, double* %arrayidx, align 8, !llvm.access.group !6
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%add1 = add nuw nsw i64 %j.0, 1
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br label %for.cond, !llvm.loop !7
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for.end:
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ret void
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}
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attributes #0 = { alwaysinline }
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!6 = distinct !{} ; access group
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!7 = distinct !{!7, !9} ; LoopID
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!9 = !{!"llvm.loop.parallel_accesses", !6}
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define void @caller(i64 %n, double* noalias nonnull %A) {
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entry:
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br label %for.cond
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for.cond:
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%i.0 = phi i64 [ 0, %entry ], [ %add, %for.body ]
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%cmp = icmp slt i64 %i.0, %n
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br i1 %cmp, label %for.body, label %for.end
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for.body:
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call void @callee(i64 %n, double* %A, i64 %i.0), !llvm.access.group !10
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%add = add nuw nsw i64 %i.0, 1
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br label %for.cond, !llvm.loop !11
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for.end:
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ret void
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}
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!10 = distinct !{} ; access group
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!11 = distinct !{!11, !12} ; LoopID
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!12 = !{!"llvm.loop.parallel_accesses", !10}
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; CHECK: store double 4.200000e+01, {{.*}} !llvm.access.group ![[ACCESS_GROUP_LIST_3:[0-9]+]]
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; CHECK: br label %for.cond.i, !llvm.loop ![[LOOP_INNER:[0-9]+]]
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; CHECK: br label %for.cond, !llvm.loop ![[LOOP_OUTER:[0-9]+]]
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; CHECK: ![[ACCESS_GROUP_LIST_3]] = !{![[ACCESS_GROUP_INNER:[0-9]+]], ![[ACCESS_GROUP_OUTER:[0-9]+]]}
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; CHECK: ![[ACCESS_GROUP_INNER]] = distinct !{}
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; CHECK: ![[ACCESS_GROUP_OUTER]] = distinct !{}
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; CHECK: ![[LOOP_INNER]] = distinct !{![[LOOP_INNER]], ![[ACCESSES_INNER:[0-9]+]]}
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; CHECK: ![[ACCESSES_INNER]] = !{!"llvm.loop.parallel_accesses", ![[ACCESS_GROUP_INNER]]}
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; CHECK: ![[LOOP_OUTER]] = distinct !{![[LOOP_OUTER]], ![[ACCESSES_OUTER:[0-9]+]]}
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; CHECK: ![[ACCESSES_OUTER]] = !{!"llvm.loop.parallel_accesses", ![[ACCESS_GROUP_OUTER]]}
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