llvm-project/llvm/test/Analysis/LoopInfo/annotated-parallel-complex.ll

92 lines
2.6 KiB
LLVM

; RUN: opt -loops -analyze < %s | FileCheck %s
;
; void func(long n, double A[static const restrict 4*n], double B[static const restrict 4*n]) {
; for (long i = 0; i < n; i += 1)
; for (long j = 0; j < n; j += 1)
; for (long k = 0; k < n; k += 1)
; for (long l = 0; l < n; l += 1) {
; A[i + j + k + l] = 21;
; B[i + j + k + l] = 42;
; }
; }
;
; Check that isAnnotatedParallel is working as expected.
;
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
define void @func(i64 %n, double* noalias nonnull %A, double* noalias nonnull %B) {
entry:
br label %for.cond
for.cond:
%i.0 = phi i64 [ 0, %entry ], [ %add28, %for.inc27 ]
%cmp = icmp slt i64 %i.0, %n
br i1 %cmp, label %for.cond2, label %for.end29
for.cond2:
%j.0 = phi i64 [ %add25, %for.inc24 ], [ 0, %for.cond ]
%cmp3 = icmp slt i64 %j.0, %n
br i1 %cmp3, label %for.cond6, label %for.inc27
for.cond6:
%k.0 = phi i64 [ %add22, %for.inc21 ], [ 0, %for.cond2 ]
%cmp7 = icmp slt i64 %k.0, %n
br i1 %cmp7, label %for.cond10, label %for.inc24
for.cond10:
%l.0 = phi i64 [ %add20, %for.body13 ], [ 0, %for.cond6 ]
%cmp11 = icmp slt i64 %l.0, %n
br i1 %cmp11, label %for.body13, label %for.inc21
for.body13:
%add = add nuw nsw i64 %i.0, %j.0
%add14 = add nuw nsw i64 %add, %k.0
%add15 = add nuw nsw i64 %add14, %l.0
%arrayidx = getelementptr inbounds double, double* %A, i64 %add15
store double 2.100000e+01, double* %arrayidx, align 8, !llvm.access.group !5
%add16 = add nuw nsw i64 %i.0, %j.0
%add17 = add nuw nsw i64 %add16, %k.0
%add18 = add nuw nsw i64 %add17, %l.0
%arrayidx19 = getelementptr inbounds double, double* %B, i64 %add18
store double 4.200000e+01, double* %arrayidx19, align 8, !llvm.access.group !6
%add20 = add nuw nsw i64 %l.0, 1
br label %for.cond10, !llvm.loop !11
for.inc21:
%add22 = add nuw nsw i64 %k.0, 1
br label %for.cond6, !llvm.loop !14
for.inc24:
%add25 = add nuw nsw i64 %j.0, 1
br label %for.cond2, !llvm.loop !16
for.inc27:
%add28 = add nuw nsw i64 %i.0, 1
br label %for.cond, !llvm.loop !18
for.end29:
ret void
}
; access groups
!7 = distinct !{}
!8 = distinct !{}
!10 = distinct !{}
; access group lists
!5 = !{!7, !10}
!6 = !{!7, !8, !10}
; LoopIDs
!11 = distinct !{!11, !{!"llvm.loop.parallel_accesses", !10}}
!14 = distinct !{!14, !{!"llvm.loop.parallel_accesses", !8, !10}}
!16 = distinct !{!16, !{!"llvm.loop.parallel_accesses", !8}}
!18 = distinct !{!18, !{!"llvm.loop.parallel_accesses", !7}}
; CHECK: Parallel Loop at depth 1
; CHECK-NOT: Parallel
; CHECK: Loop at depth 2
; CHECK: Parallel Loop
; CHECK: Parallel Loop