93 lines
2.7 KiB
LLVM
93 lines
2.7 KiB
LLVM
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; RUN: opt -loops -analyze -enable-new-pm=0 < %s | FileCheck %s
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; RUN: opt -passes='print<loops>' -disable-output %s 2>&1 | FileCheck %s
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;
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; void func(long n, double A[static const restrict 4*n], double B[static const restrict 4*n]) {
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; for (long i = 0; i < n; i += 1)
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; for (long j = 0; j < n; j += 1)
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; for (long k = 0; k < n; k += 1)
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; for (long l = 0; l < n; l += 1) {
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; A[i + j + k + l] = 21;
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; B[i + j + k + l] = 42;
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; }
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; }
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;
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; Check that isAnnotatedParallel is working as expected.
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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 void @func(i64 %n, double* noalias nonnull %A, double* noalias nonnull %B) {
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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 ], [ %add28, %for.inc27 ]
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%cmp = icmp slt i64 %i.0, %n
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br i1 %cmp, label %for.cond2, label %for.end29
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for.cond2:
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%j.0 = phi i64 [ %add25, %for.inc24 ], [ 0, %for.cond ]
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%cmp3 = icmp slt i64 %j.0, %n
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br i1 %cmp3, label %for.cond6, label %for.inc27
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for.cond6:
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%k.0 = phi i64 [ %add22, %for.inc21 ], [ 0, %for.cond2 ]
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%cmp7 = icmp slt i64 %k.0, %n
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br i1 %cmp7, label %for.cond10, label %for.inc24
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for.cond10:
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%l.0 = phi i64 [ %add20, %for.body13 ], [ 0, %for.cond6 ]
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%cmp11 = icmp slt i64 %l.0, %n
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br i1 %cmp11, label %for.body13, label %for.inc21
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for.body13:
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%add = add nuw nsw i64 %i.0, %j.0
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%add14 = add nuw nsw i64 %add, %k.0
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%add15 = add nuw nsw i64 %add14, %l.0
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%arrayidx = getelementptr inbounds double, double* %A, i64 %add15
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store double 2.100000e+01, double* %arrayidx, align 8, !llvm.access.group !5
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%add16 = add nuw nsw i64 %i.0, %j.0
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%add17 = add nuw nsw i64 %add16, %k.0
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%add18 = add nuw nsw i64 %add17, %l.0
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%arrayidx19 = getelementptr inbounds double, double* %B, i64 %add18
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store double 4.200000e+01, double* %arrayidx19, align 8, !llvm.access.group !6
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%add20 = add nuw nsw i64 %l.0, 1
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br label %for.cond10, !llvm.loop !11
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for.inc21:
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%add22 = add nuw nsw i64 %k.0, 1
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br label %for.cond6, !llvm.loop !14
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for.inc24:
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%add25 = add nuw nsw i64 %j.0, 1
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br label %for.cond2, !llvm.loop !16
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for.inc27:
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%add28 = add nuw nsw i64 %i.0, 1
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br label %for.cond, !llvm.loop !18
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for.end29:
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ret void
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}
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; access groups
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!7 = distinct !{}
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!8 = distinct !{}
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!10 = distinct !{}
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; access group lists
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!5 = !{!7, !10}
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!6 = !{!7, !8, !10}
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; LoopIDs
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!11 = distinct !{!11, !{!"llvm.loop.parallel_accesses", !10}}
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!14 = distinct !{!14, !{!"llvm.loop.parallel_accesses", !8, !10}}
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!16 = distinct !{!16, !{!"llvm.loop.parallel_accesses", !8}}
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!18 = distinct !{!18, !{!"llvm.loop.parallel_accesses", !7}}
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; CHECK: Parallel Loop at depth 1
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; CHECK-NOT: Parallel
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; CHECK: Loop at depth 2
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; CHECK: Parallel Loop
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; CHECK: Parallel Loop
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