; LLVM IR from AlgoGenesis/C :: Sorting Algorithms/Library Sort (Program)

; 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 @insert(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
  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
  %8 = load ptr, ptr %5, align 8, !tbaa !5
  %9 = load i32, ptr %8, align 4, !tbaa !9
  %10 = sub nsw i32 %9, 1
  store i32 %10, ptr %7, align 4, !tbaa !9
  br label %11

11:                                               ; preds = %24, %3
  %12 = load i32, ptr %7, align 4, !tbaa !9
  %13 = icmp sge i32 %12, 0
  br i1 %13, label %14, label %22

14:                                               ; preds = %11
  %15 = load ptr, ptr %4, align 8, !tbaa !5
  %16 = load i32, ptr %7, align 4, !tbaa !9
  %17 = sext i32 %16 to i64
  %18 = getelementptr inbounds i32, ptr %15, i64 %17
  %19 = load i32, ptr %18, align 4, !tbaa !9
  %20 = load i32, ptr %6, align 4, !tbaa !9
  %21 = icmp sgt i32 %19, %20
  br label %22

22:                                               ; preds = %14, %11
  %23 = phi i1 [ false, %11 ], [ %21, %14 ]
  br i1 %23, label %24, label %37

24:                                               ; preds = %22
  %25 = load ptr, ptr %4, align 8, !tbaa !5
  %26 = load i32, ptr %7, 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 ptr, ptr %4, align 8, !tbaa !5
  %31 = load i32, ptr %7, align 4, !tbaa !9
  %32 = add nsw i32 %31, 1
  %33 = sext i32 %32 to i64
  %34 = getelementptr inbounds i32, ptr %30, i64 %33
  store i32 %29, ptr %34, align 4, !tbaa !9
  %35 = load i32, ptr %7, align 4, !tbaa !9
  %36 = add nsw i32 %35, -1
  store i32 %36, ptr %7, align 4, !tbaa !9
  br label %11, !llvm.loop !11

37:                                               ; preds = %22
  %38 = load i32, ptr %6, align 4, !tbaa !9
  %39 = load ptr, ptr %4, align 8, !tbaa !5
  %40 = load i32, ptr %7, align 4, !tbaa !9
  %41 = add nsw i32 %40, 1
  %42 = sext i32 %41 to i64
  %43 = getelementptr inbounds i32, ptr %39, i64 %42
  store i32 %38, ptr %43, align 4, !tbaa !9
  %44 = load ptr, ptr %5, align 8, !tbaa !5
  %45 = load i32, ptr %44, align 4, !tbaa !9
  %46 = add nsw i32 %45, 1
  store i32 %46, ptr %44, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #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 = { 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 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


; 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: readwrite) uwtable
define dso_local void @insert(ptr nocapture noundef %0, ptr nocapture noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  %4 = load i32, ptr %1, align 4, !tbaa !5
  %5 = icmp sgt i32 %4, 0
  br i1 %5, label %.lr.ph.preheader, label %.critedge

.lr.ph.preheader:                                 ; preds = %3
  %6 = zext nneg i32 %4 to i64
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.preheader, %10
  %indvars.iv = phi i64 [ %6, %.lr.ph.preheader ], [ %indvars.iv.next, %10 ]
  %indvars.iv.next = add nsw i64 %indvars.iv, -1
  %7 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv.next
  %8 = load i32, ptr %7, align 4, !tbaa !5
  %9 = icmp sgt i32 %8, %2
  br i1 %9, label %10, label %.critedge.loopexit.split.loop.exit20

10:                                               ; preds = %.lr.ph
  %11 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv
  store i32 %8, ptr %11, align 4, !tbaa !5
  %12 = icmp ugt i64 %indvars.iv, 1
  br i1 %12, label %.lr.ph, label %.critedge, !llvm.loop !9

.critedge.loopexit.split.loop.exit20:             ; preds = %.lr.ph
  %13 = trunc nuw nsw i64 %indvars.iv to i32
  br label %.critedge

.critedge:                                        ; preds = %10, %.critedge.loopexit.split.loop.exit20, %3
  %.0.in.lcssa = phi i32 [ %4, %3 ], [ %13, %.critedge.loopexit.split.loop.exit20 ], [ 0, %10 ]
  %14 = sext i32 %.0.in.lcssa to i64
  %15 = getelementptr inbounds i32, ptr %0, i64 %14
  store i32 %2, ptr %15, align 4, !tbaa !5
  %16 = load i32, ptr %1, align 4, !tbaa !5
  %17 = add nsw i32 %16, 1
  store i32 %17, ptr %1, align 4, !tbaa !5
  ret void
}

attributes #0 = { 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/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


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