; LLVM IR from codee-com/open-catalog :: Checks/PWR030 (example)

; Unoptimized IR (clang -disable-llvm-passes):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

; Function Attrs: nounwind uwtable
define dso_local void @example(ptr noundef %0, ptr noundef %1, i32 noundef %2) #0 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  store i32 %2, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  store i32 0, ptr %7, align 4, !tbaa !9
  br label %10

10:                                               ; preds = %38, %3
  %11 = load i32, ptr %7, align 4, !tbaa !9
  %12 = load i32, ptr %6, align 4, !tbaa !9
  %13 = icmp ult i32 %11, %12
  br i1 %13, label %15, label %14

14:                                               ; preds = %10
  store i32 2, ptr %8, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  br label %41

15:                                               ; preds = %10
  %16 = load ptr, ptr %4, align 8, !tbaa !5
  %17 = load i32, ptr %7, align 4, !tbaa !9
  %18 = load i32, ptr %6, align 4, !tbaa !9
  %19 = mul i32 %17, %18
  %20 = zext i32 %19 to i64
  %21 = getelementptr inbounds float, ptr %16, i64 %20
  store ptr %21, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #2
  store i32 0, ptr %9, align 4, !tbaa !9
  br label %22

22:                                               ; preds = %34, %15
  %23 = load i32, ptr %9, align 4, !tbaa !9
  %24 = load i32, ptr %6, align 4, !tbaa !9
  %25 = icmp ult i32 %23, %24
  br i1 %25, label %27, label %26

26:                                               ; preds = %22
  store i32 5, ptr %8, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #2
  br label %37

27:                                               ; preds = %22
  %28 = load ptr, ptr %5, align 8, !tbaa !5
  %29 = load i32, ptr %9, align 4, !tbaa !9
  %30 = load i32, ptr %6, align 4, !tbaa !9
  %31 = mul i32 %29, %30
  %32 = zext i32 %31 to i64
  %33 = getelementptr inbounds float, ptr %28, i64 %32
  store float 0.000000e+00, ptr %33, align 4, !tbaa !11
  br label %34

34:                                               ; preds = %27
  %35 = load i32, ptr %9, align 4, !tbaa !9
  %36 = add i32 %35, 1
  store i32 %36, ptr %9, align 4, !tbaa !9
  br label %22, !llvm.loop !13

37:                                               ; preds = %26
  br label %38

38:                                               ; preds = %37
  %39 = load i32, ptr %7, align 4, !tbaa !9
  %40 = add i32 %39, 1
  store i32 %40, ptr %7, align 4, !tbaa !9
  br label %10, !llvm.loop !15

41:                                               ; preds = %14
  ret void
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

attributes #0 = { nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nounwind }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"float", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}
!15 = distinct !{!15, !14}


; Optimized IR (opt -passes='default<O3>'):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

; Function Attrs: nofree norecurse nosync nounwind memory(argmem: write) uwtable
define dso_local void @example(ptr nocapture noundef writeonly %0, ptr nocapture noundef readnone %1, i32 noundef %2) local_unnamed_addr #0 {
  %.not = icmp eq i32 %2, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %3
  %wide.trip.count19 = zext i32 %2 to i64
  %xtraiter = and i64 %wide.trip.count19, 3
  %4 = icmp ult i32 %2, 4
  %unroll_iter = and i64 %wide.trip.count19, 4294967292
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br label %.lr.ph

._crit_edge:                                      ; preds = %.loopexit, %3
  ret void

.lr.ph:                                           ; preds = %.lr.ph.preheader, %.loopexit
  %indvars.iv16 = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next17, %.loopexit ]
  %5 = trunc nuw i64 %indvars.iv16 to i32
  %6 = mul i32 %5, %2
  %7 = zext i32 %6 to i64
  %8 = getelementptr inbounds float, ptr %0, i64 %7
  br i1 %4, label %.loopexit.unr-lcssa, label %.lr.ph.new

.loopexit.unr-lcssa:                              ; preds = %.lr.ph.new, %.lr.ph
  %indvars.iv.unr = phi i64 [ 0, %.lr.ph ], [ %indvars.iv.next.3, %.lr.ph.new ]
  br i1 %lcmp.mod.not, label %.loopexit, label %.epil.preheader

.epil.preheader:                                  ; preds = %.loopexit.unr-lcssa, %.epil.preheader
  %indvars.iv.epil = phi i64 [ %indvars.iv.next.epil, %.epil.preheader ], [ %indvars.iv.unr, %.loopexit.unr-lcssa ]
  %epil.iter = phi i64 [ %epil.iter.next, %.epil.preheader ], [ 0, %.loopexit.unr-lcssa ]
  %9 = trunc nuw i64 %indvars.iv.epil to i32
  %10 = mul i32 %9, %2
  %11 = zext i32 %10 to i64
  %12 = getelementptr inbounds float, ptr %8, i64 %11
  store float 0.000000e+00, ptr %12, align 4, !tbaa !5
  %indvars.iv.next.epil = add nuw nsw i64 %indvars.iv.epil, 1
  %epil.iter.next = add i64 %epil.iter, 1
  %epil.iter.cmp.not = icmp eq i64 %epil.iter.next, %xtraiter
  br i1 %epil.iter.cmp.not, label %.loopexit, label %.epil.preheader, !llvm.loop !9

.loopexit:                                        ; preds = %.epil.preheader, %.loopexit.unr-lcssa
  %indvars.iv.next17 = add nuw nsw i64 %indvars.iv16, 1
  %exitcond20.not = icmp eq i64 %indvars.iv.next17, %wide.trip.count19
  br i1 %exitcond20.not, label %._crit_edge, label %.lr.ph, !llvm.loop !11

.lr.ph.new:                                       ; preds = %.lr.ph, %.lr.ph.new
  %indvars.iv = phi i64 [ %indvars.iv.next.3, %.lr.ph.new ], [ 0, %.lr.ph ]
  %niter = phi i64 [ %niter.next.3, %.lr.ph.new ], [ 0, %.lr.ph ]
  %13 = trunc nuw i64 %indvars.iv to i32
  %14 = mul i32 %13, %2
  %15 = zext i32 %14 to i64
  %16 = getelementptr inbounds float, ptr %8, i64 %15
  store float 0.000000e+00, ptr %16, align 4, !tbaa !5
  %17 = trunc i64 %indvars.iv to i32
  %18 = or disjoint i32 %17, 1
  %19 = mul i32 %18, %2
  %20 = zext i32 %19 to i64
  %21 = getelementptr inbounds float, ptr %8, i64 %20
  store float 0.000000e+00, ptr %21, align 4, !tbaa !5
  %22 = trunc i64 %indvars.iv to i32
  %23 = or disjoint i32 %22, 2
  %24 = mul i32 %23, %2
  %25 = zext i32 %24 to i64
  %26 = getelementptr inbounds float, ptr %8, i64 %25
  store float 0.000000e+00, ptr %26, align 4, !tbaa !5
  %27 = trunc i64 %indvars.iv to i32
  %28 = or disjoint i32 %27, 3
  %29 = mul i32 %28, %2
  %30 = zext i32 %29 to i64
  %31 = getelementptr inbounds float, ptr %8, i64 %30
  store float 0.000000e+00, ptr %31, align 4, !tbaa !5
  %indvars.iv.next.3 = add nuw nsw i64 %indvars.iv, 4
  %niter.next.3 = add i64 %niter, 4
  %niter.ncmp.3 = icmp eq i64 %niter.next.3, %unroll_iter
  br i1 %niter.ncmp.3, label %.loopexit.unr-lcssa, label %.lr.ph.new, !llvm.loop !13
}

attributes #0 = { nofree norecurse nosync nounwind memory(argmem: write) uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"float", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.unroll.disable"}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12, !14}
!14 = !{!"llvm.loop.isvectorized", i32 1}


; Effective O3 passes: CorrelatedValuePropagationPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopLoadEliminationPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,LoopVectorizePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass