; LLVM IR from MakeContributions/DSA :: algorithms/CPlusPlus/Sorting/insertion-sort.ll (Z13insertionSortPii)

; 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: mustprogress nounwind uwtable
define dso_local void @_Z13insertionSortPii(ptr noundef %0, i32 noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  store i32 1, ptr %7, align 4, !tbaa !9
  br label %8

8:                                                ; preds = %54, %2
  %9 = load i32, ptr %7, align 4, !tbaa !9
  %10 = load i32, ptr %4, align 4, !tbaa !9
  %11 = icmp slt i32 %9, %10
  br i1 %11, label %13, label %12

12:                                               ; preds = %8
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  br label %57

13:                                               ; preds = %8
  %14 = load ptr, ptr %3, align 8, !tbaa !5
  %15 = load i32, ptr %7, align 4, !tbaa !9
  %16 = sext i32 %15 to i64
  %17 = getelementptr inbounds i32, ptr %14, i64 %16
  %18 = load i32, ptr %17, align 4, !tbaa !9
  store i32 %18, ptr %5, align 4, !tbaa !9
  %19 = load i32, ptr %7, align 4, !tbaa !9
  %20 = sub nsw i32 %19, 1
  store i32 %20, ptr %6, align 4, !tbaa !9
  br label %21

21:                                               ; preds = %34, %13
  %22 = load i32, ptr %6, align 4, !tbaa !9
  %23 = icmp sge i32 %22, 0
  br i1 %23, label %24, label %32

24:                                               ; preds = %21
  %25 = load ptr, ptr %3, align 8, !tbaa !5
  %26 = load i32, ptr %6, align 4, !tbaa !9
  %27 = sext i32 %26 to i64
  %28 = getelementptr inbounds i32, ptr %25, i64 %27
  %29 = load i32, ptr %28, align 4, !tbaa !9
  %30 = load i32, ptr %5, align 4, !tbaa !9
  %31 = icmp sgt i32 %29, %30
  br label %32

32:                                               ; preds = %24, %21
  %33 = phi i1 [ false, %21 ], [ %31, %24 ]
  br i1 %33, label %34, label %47

34:                                               ; preds = %32
  %35 = load ptr, ptr %3, align 8, !tbaa !5
  %36 = load i32, ptr %6, align 4, !tbaa !9
  %37 = sext i32 %36 to i64
  %38 = getelementptr inbounds i32, ptr %35, i64 %37
  %39 = load i32, ptr %38, align 4, !tbaa !9
  %40 = load ptr, ptr %3, align 8, !tbaa !5
  %41 = load i32, ptr %6, align 4, !tbaa !9
  %42 = add nsw i32 %41, 1
  %43 = sext i32 %42 to i64
  %44 = getelementptr inbounds i32, ptr %40, i64 %43
  store i32 %39, ptr %44, align 4, !tbaa !9
  %45 = load i32, ptr %6, align 4, !tbaa !9
  %46 = sub nsw i32 %45, 1
  store i32 %46, ptr %6, align 4, !tbaa !9
  br label %21, !llvm.loop !11

47:                                               ; preds = %32
  %48 = load i32, ptr %5, align 4, !tbaa !9
  %49 = load ptr, ptr %3, align 8, !tbaa !5
  %50 = load i32, ptr %6, align 4, !tbaa !9
  %51 = add nsw i32 %50, 1
  %52 = sext i32 %51 to i64
  %53 = getelementptr inbounds i32, ptr %49, i64 %52
  store i32 %48, ptr %53, align 4, !tbaa !9
  br label %54

54:                                               ; preds = %47
  %55 = load i32, ptr %7, align 4, !tbaa !9
  %56 = add nsw i32 %55, 1
  store i32 %56, ptr %7, align 4, !tbaa !9
  br label %8, !llvm.loop !13

57:                                               ; preds = %12
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  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 = { mustprogress 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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}


; 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: mustprogress nofree norecurse nosync nounwind memory(argmem: readwrite) uwtable
define dso_local void @_Z13insertionSortPii(ptr nocapture noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %invariant.gep = getelementptr i8, ptr %0, i64 4
  %3 = icmp sgt i32 %1, 1
  br i1 %3, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %2
  %wide.trip.count = zext nneg i32 %1 to i64
  %4 = add nsw i64 %wide.trip.count, -1
  %xtraiter = and i64 %4, 1
  %5 = icmp eq i32 %1, 2
  br i1 %5, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph.preheader.new

.lr.ph.preheader.new:                             ; preds = %.lr.ph.preheader
  %unroll_iter = and i64 %4, -2
  br label %.lr.ph

._crit_edge.loopexit.unr-lcssa:                   ; preds = %.critedge.1, %.lr.ph.preheader
  %indvars.iv.unr = phi i64 [ 1, %.lr.ph.preheader ], [ %indvars.iv.next.1, %.critedge.1 ]
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %._crit_edge, label %.lr.ph.epil

.lr.ph.epil:                                      ; preds = %._crit_edge.loopexit.unr-lcssa
  %6 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv.unr
  %7 = load i32, ptr %6, align 4, !tbaa !5
  %8 = trunc i64 %indvars.iv.unr to i32
  br label %9

9:                                                ; preds = %14, %.lr.ph.epil
  %.01720.in.epil = phi i32 [ %8, %.lr.ph.epil ], [ %.01720.epil, %14 ]
  %.01720.epil = add i32 %.01720.in.epil, -1
  %10 = zext nneg i32 %.01720.epil to i64
  %11 = getelementptr inbounds i32, ptr %0, i64 %10
  %12 = load i32, ptr %11, align 4, !tbaa !5
  %13 = icmp sgt i32 %12, %7
  br i1 %13, label %14, label %.critedge.epil

14:                                               ; preds = %9
  %15 = getelementptr inbounds i8, ptr %11, i64 4
  store i32 %12, ptr %15, align 4, !tbaa !5
  %16 = icmp sgt i32 %.01720.epil, 0
  br i1 %16, label %9, label %.critedge.epil, !llvm.loop !9

.critedge.epil:                                   ; preds = %14, %9
  %.017.lcssa.epil = phi i32 [ -1, %14 ], [ %.01720.epil, %9 ]
  %17 = sext i32 %.017.lcssa.epil to i64
  %gep.epil = getelementptr i32, ptr %invariant.gep, i64 %17
  store i32 %7, ptr %gep.epil, align 4, !tbaa !5
  br label %._crit_edge

._crit_edge:                                      ; preds = %.critedge.epil, %._crit_edge.loopexit.unr-lcssa, %2
  ret void

.lr.ph:                                           ; preds = %.critedge.1, %.lr.ph.preheader.new
  %indvars.iv = phi i64 [ 1, %.lr.ph.preheader.new ], [ %indvars.iv.next.1, %.critedge.1 ]
  %niter = phi i64 [ 0, %.lr.ph.preheader.new ], [ %niter.next.1, %.critedge.1 ]
  %18 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv
  %19 = load i32, ptr %18, align 4, !tbaa !5
  %20 = trunc i64 %indvars.iv to i32
  br label %21

21:                                               ; preds = %.lr.ph, %26
  %.01720.in = phi i32 [ %20, %.lr.ph ], [ %.01720, %26 ]
  %.01720 = add i32 %.01720.in, -1
  %22 = zext nneg i32 %.01720 to i64
  %23 = getelementptr inbounds i32, ptr %0, i64 %22
  %24 = load i32, ptr %23, align 4, !tbaa !5
  %25 = icmp sgt i32 %24, %19
  br i1 %25, label %26, label %.critedge

26:                                               ; preds = %21
  %27 = getelementptr inbounds i8, ptr %23, i64 4
  store i32 %24, ptr %27, align 4, !tbaa !5
  %28 = icmp sgt i32 %.01720, 0
  br i1 %28, label %21, label %.critedge, !llvm.loop !9

.critedge:                                        ; preds = %26, %21
  %.017.lcssa = phi i32 [ -1, %26 ], [ %.01720, %21 ]
  %29 = sext i32 %.017.lcssa to i64
  %gep = getelementptr i32, ptr %invariant.gep, i64 %29
  store i32 %19, ptr %gep, align 4, !tbaa !5
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %30 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv.next
  %31 = load i32, ptr %30, align 4, !tbaa !5
  %32 = trunc i64 %indvars.iv.next to i32
  br label %33

33:                                               ; preds = %38, %.critedge
  %.01720.in.1 = phi i32 [ %32, %.critedge ], [ %.01720.1, %38 ]
  %.01720.1 = add i32 %.01720.in.1, -1
  %34 = zext nneg i32 %.01720.1 to i64
  %35 = getelementptr inbounds i32, ptr %0, i64 %34
  %36 = load i32, ptr %35, align 4, !tbaa !5
  %37 = icmp sgt i32 %36, %31
  br i1 %37, label %38, label %.critedge.1

38:                                               ; preds = %33
  %39 = getelementptr inbounds i8, ptr %35, i64 4
  store i32 %36, ptr %39, align 4, !tbaa !5
  %40 = icmp sgt i32 %.01720.1, 0
  br i1 %40, label %33, label %.critedge.1, !llvm.loop !9

.critedge.1:                                      ; preds = %38, %33
  %.017.lcssa.1 = phi i32 [ -1, %38 ], [ %.01720.1, %33 ]
  %41 = sext i32 %.017.lcssa.1 to i64
  %gep.1 = getelementptr i32, ptr %invariant.gep, i64 %41
  store i32 %31, ptr %gep.1, align 4, !tbaa !5
  %indvars.iv.next.1 = add nuw nsw i64 %indvars.iv, 2
  %niter.next.1 = add i64 %niter, 2
  %niter.ncmp.1 = icmp eq i64 %niter.next.1, %unroll_iter
  br i1 %niter.ncmp.1, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph, !llvm.loop !11
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind memory(argmem: readwrite) 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass