; LLVM IR from Ayon-SSP/The-SDE-Prep :: 2]_Algorithms/2]_Sorting/Sorting in C++/Selectionsort.ll (Z13selectionsortPii)

; 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
declare dso_local void @_Z4swapPiS_(ptr noundef, ptr noundef) #0

; 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

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z13selectionsortPii(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
  %8 = 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
  store i32 0, ptr %5, align 4, !tbaa !9
  br label %9

9:                                                ; preds = %64, %2
  %10 = load i32, ptr %5, align 4, !tbaa !9
  %11 = load i32, ptr %4, align 4, !tbaa !9
  %12 = sub nsw i32 %11, 1
  %13 = icmp slt i32 %10, %12
  br i1 %13, label %15, label %14

14:                                               ; preds = %9
  store i32 2, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  br label %67

15:                                               ; preds = %9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  %16 = load i32, ptr %5, align 4, !tbaa !9
  store i32 %16, ptr %7, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  %17 = load i32, ptr %5, align 4, !tbaa !9
  %18 = add nsw i32 %17, 1
  store i32 %18, ptr %8, align 4, !tbaa !9
  br label %19

19:                                               ; preds = %39, %15
  %20 = load i32, ptr %8, align 4, !tbaa !9
  %21 = load i32, ptr %4, align 4, !tbaa !9
  %22 = icmp slt i32 %20, %21
  br i1 %22, label %24, label %23

23:                                               ; preds = %19
  store i32 5, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  br label %42

24:                                               ; preds = %19
  %25 = load ptr, ptr %3, align 8, !tbaa !5
  %26 = load i32, ptr %8, 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 %3, align 8, !tbaa !5
  %31 = load i32, ptr %7, align 4, !tbaa !9
  %32 = sext i32 %31 to i64
  %33 = getelementptr inbounds i32, ptr %30, i64 %32
  %34 = load i32, ptr %33, align 4, !tbaa !9
  %35 = icmp slt i32 %29, %34
  br i1 %35, label %36, label %38

36:                                               ; preds = %24
  %37 = load i32, ptr %8, align 4, !tbaa !9
  store i32 %37, ptr %7, align 4, !tbaa !9
  br label %38

38:                                               ; preds = %36, %24
  br label %39

39:                                               ; preds = %38
  %40 = load i32, ptr %8, align 4, !tbaa !9
  %41 = add nsw i32 %40, 1
  store i32 %41, ptr %8, align 4, !tbaa !9
  br label %19, !llvm.loop !11

42:                                               ; preds = %23
  %43 = load ptr, ptr %3, align 8, !tbaa !5
  %44 = load i32, ptr %7, align 4, !tbaa !9
  %45 = sext i32 %44 to i64
  %46 = getelementptr inbounds i32, ptr %43, i64 %45
  %47 = load i32, ptr %46, align 4, !tbaa !9
  %48 = load ptr, ptr %3, align 8, !tbaa !5
  %49 = load i32, ptr %5, align 4, !tbaa !9
  %50 = sext i32 %49 to i64
  %51 = getelementptr inbounds i32, ptr %48, i64 %50
  %52 = load i32, ptr %51, align 4, !tbaa !9
  %53 = icmp ne i32 %47, %52
  br i1 %53, label %54, label %63

54:                                               ; preds = %42
  %55 = load ptr, ptr %3, align 8, !tbaa !5
  %56 = load i32, ptr %7, align 4, !tbaa !9
  %57 = sext i32 %56 to i64
  %58 = getelementptr inbounds i32, ptr %55, i64 %57
  %59 = load ptr, ptr %3, align 8, !tbaa !5
  %60 = load i32, ptr %5, align 4, !tbaa !9
  %61 = sext i32 %60 to i64
  %62 = getelementptr inbounds i32, ptr %59, i64 %61
  call void @_Z4swapPiS_(ptr noundef %58, ptr noundef %62)
  br label %63

63:                                               ; preds = %54, %42
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  br label %64

64:                                               ; preds = %63
  %65 = load i32, ptr %5, align 4, !tbaa !9
  %66 = add nsw i32 %65, 1
  store i32 %66, ptr %5, align 4, !tbaa !9
  br label %9, !llvm.loop !13

67:                                               ; preds = %14
  ret void
}

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 nounwind uwtable
declare dso_local void @_Z4swapPiS_(ptr noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z13selectionsortPii(ptr noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = icmp sgt i32 %1, 1
  br i1 %3, label %.lr.ph26.preheader, label %._crit_edge27

.lr.ph26.preheader:                               ; preds = %2
  %4 = add nsw i32 %1, -1
  %wide.trip.count34 = zext nneg i32 %4 to i64
  %wide.trip.count = zext nneg i32 %1 to i64
  br label %.lr.ph.preheader

._crit_edge27:                                    ; preds = %19, %2
  ret void

.lr.ph.preheader:                                 ; preds = %19, %.lr.ph26.preheader
  %indvars.iv31 = phi i64 [ 0, %.lr.ph26.preheader ], [ %indvars.iv.next32, %19 ]
  %indvars.iv = phi i64 [ 1, %.lr.ph26.preheader ], [ %indvars.iv.next, %19 ]
  %indvars.iv.next32 = add nuw nsw i64 %indvars.iv31, 1
  %5 = trunc nuw nsw i64 %indvars.iv31 to i32
  br label %.lr.ph

._crit_edge:                                      ; preds = %.lr.ph
  %6 = sext i32 %spec.select to i64
  %7 = getelementptr inbounds i32, ptr %0, i64 %6
  %8 = load i32, ptr %7, align 4, !tbaa !5
  %9 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv31
  %10 = load i32, ptr %9, align 4, !tbaa !5
  %.not = icmp eq i32 %8, %10
  br i1 %.not, label %19, label %18

.lr.ph:                                           ; preds = %.lr.ph.preheader, %.lr.ph
  %indvars.iv28 = phi i64 [ %indvars.iv, %.lr.ph.preheader ], [ %indvars.iv.next29, %.lr.ph ]
  %.02022 = phi i32 [ %5, %.lr.ph.preheader ], [ %spec.select, %.lr.ph ]
  %11 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv28
  %12 = load i32, ptr %11, align 4, !tbaa !5
  %13 = sext i32 %.02022 to i64
  %14 = getelementptr inbounds i32, ptr %0, i64 %13
  %15 = load i32, ptr %14, align 4, !tbaa !5
  %16 = icmp slt i32 %12, %15
  %17 = trunc nuw nsw i64 %indvars.iv28 to i32
  %spec.select = select i1 %16, i32 %17, i32 %.02022
  %indvars.iv.next29 = add nuw nsw i64 %indvars.iv28, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next29, %wide.trip.count
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !9

18:                                               ; preds = %._crit_edge
  tail call void @_Z4swapPiS_(ptr noundef nonnull %7, ptr noundef nonnull %9)
  br label %19

19:                                               ; preds = %18, %._crit_edge
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond35.not = icmp eq i64 %indvars.iv.next32, %wide.trip.count34
  br i1 %exitcond35.not, label %._crit_edge27, label %.lr.ph.preheader, !llvm.loop !11
}

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" }

!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: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SCCPPass,SROAPass,SimplifyCFGPass,TailCallElimPass