llvm/test/Transforms/LoopDistribute/disable_nonforced.ll

; RUN: opt -loop-distribute -enable-loop-distribute=1 -S < %s | FileCheck %s
;
; Check that the disable_nonforced is honored by loop distribution.
;
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"

; CHECK-LABEL: @disable_nonforced(
; CHECK-NOT: for.body.ldist1:
define void @disable_nonforced(i32* noalias %a,
                         i32* noalias %b,
                         i32* noalias %c,
                         i32* noalias %d,
                         i32* noalias %e) {
entry:
  br label %for.body

for.body:
  %ind = phi i64 [ 0, %entry ], [ %add, %for.body ]

  %arrayidxA = getelementptr inbounds i32, i32* %a, i64 %ind
  %loadA = load i32, i32* %arrayidxA, align 4

  %arrayidxB = getelementptr inbounds i32, i32* %b, i64 %ind
  %loadB = load i32, i32* %arrayidxB, align 4

  %mulA = mul i32 %loadB, %loadA

  %add = add nuw nsw i64 %ind, 1
  %arrayidxA_plus_4 = getelementptr inbounds i32, i32* %a, i64 %add
  store i32 %mulA, i32* %arrayidxA_plus_4, align 4

  %arrayidxD = getelementptr inbounds i32, i32* %d, i64 %ind
  %loadD = load i32, i32* %arrayidxD, align 4

  %arrayidxE = getelementptr inbounds i32, i32* %e, i64 %ind
  %loadE = load i32, i32* %arrayidxE, align 4

  %mulC = mul i32 %loadD, %loadE

  %arrayidxC = getelementptr inbounds i32, i32* %c, i64 %ind
  store i32 %mulC, i32* %arrayidxC, align 4

  %exitcond = icmp eq i64 %add, 20
  br i1 %exitcond, label %for.end, label %for.body, !llvm.loop !0

for.end:
  ret void
}

!0 = distinct !{!0, !{!"llvm.loop.disable_nonforced"}}