; LLVM IR from priyankchheda/algorithms :: _other_languages/c_language/sorts/selection_sort (selection_sort)

; 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: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

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

9:                                                ; preds = %50, %2
  %10 = load i64, ptr %5, align 8, !tbaa !9
  %11 = load i64, ptr %4, align 8, !tbaa !9
  %12 = icmp ult i64 %10, %11
  br i1 %12, label %14, label %13

13:                                               ; preds = %9
  store i32 2, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #2
  br label %53

14:                                               ; preds = %9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  %15 = load i64, ptr %5, align 8, !tbaa !9
  %16 = trunc i64 %15 to i32
  store i32 %16, ptr %7, align 4, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #2
  %17 = load i64, ptr %5, align 8, !tbaa !9
  %18 = add i64 %17, 1
  store i64 %18, ptr %8, align 8, !tbaa !9
  br label %19

19:                                               ; preds = %39, %14
  %20 = load i64, ptr %8, align 8, !tbaa !9
  %21 = load i64, ptr %4, align 8, !tbaa !9
  %22 = icmp ult i64 %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 8, ptr %8) #2
  br label %42

24:                                               ; preds = %19
  %25 = load ptr, ptr %3, align 8, !tbaa !5
  %26 = load i64, ptr %8, align 8, !tbaa !9
  %27 = getelementptr inbounds i32, ptr %25, i64 %26
  %28 = load i32, ptr %27, align 4, !tbaa !11
  %29 = load ptr, ptr %3, align 8, !tbaa !5
  %30 = load i32, ptr %7, align 4, !tbaa !11
  %31 = sext i32 %30 to i64
  %32 = getelementptr inbounds i32, ptr %29, i64 %31
  %33 = load i32, ptr %32, align 4, !tbaa !11
  %34 = icmp slt i32 %28, %33
  br i1 %34, label %35, label %38

35:                                               ; preds = %24
  %36 = load i64, ptr %8, align 8, !tbaa !9
  %37 = trunc i64 %36 to i32
  store i32 %37, ptr %7, align 4, !tbaa !11
  br label %38

38:                                               ; preds = %35, %24
  br label %39

39:                                               ; preds = %38
  %40 = load i64, ptr %8, align 8, !tbaa !9
  %41 = add i64 %40, 1
  store i64 %41, ptr %8, align 8, !tbaa !9
  br label %19, !llvm.loop !13

42:                                               ; preds = %23
  %43 = load ptr, ptr %3, align 8, !tbaa !5
  %44 = load i64, ptr %5, align 8, !tbaa !9
  %45 = getelementptr inbounds i32, ptr %43, i64 %44
  %46 = load ptr, ptr %3, align 8, !tbaa !5
  %47 = load i32, ptr %7, align 4, !tbaa !11
  %48 = sext i32 %47 to i64
  %49 = getelementptr inbounds i32, ptr %46, i64 %48
  call void @swap(ptr noundef %45, ptr noundef %49)
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  br label %50

50:                                               ; preds = %42
  %51 = load i64, ptr %5, align 8, !tbaa !9
  %52 = add i64 %51, 1
  store i64 %52, ptr %5, align 8, !tbaa !9
  br label %9, !llvm.loop !15

53:                                               ; preds = %13
  ret void
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
declare hidden void @swap(ptr noundef, ptr noundef) #1

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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 = !{!"long", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !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: nounwind uwtable
define dso_local void @selection_sort(ptr noundef %0, i64 noundef %1) local_unnamed_addr #0 {
  %.not = icmp eq i64 %1, 0
  br i1 %.not, label %._crit_edge24, label %.lr.ph23

._crit_edge24:                                    ; preds = %._crit_edge, %2
  ret void

.lr.ph23:                                         ; preds = %2, %._crit_edge
  %.01721 = phi i64 [ %4, %._crit_edge ], [ 0, %2 ]
  %3 = trunc i64 %.01721 to i32
  %4 = add nuw i64 %.01721, 1
  %5 = icmp ult i64 %4, %1
  br i1 %5, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %.lr.ph23
  %.016.lcssa = phi i32 [ %3, %.lr.ph23 ], [ %spec.select, %.lr.ph ]
  %6 = getelementptr inbounds i32, ptr %0, i64 %.01721
  %7 = sext i32 %.016.lcssa to i64
  %8 = getelementptr inbounds i32, ptr %0, i64 %7
  tail call void @swap(ptr noundef %6, ptr noundef %8)
  %exitcond.not = icmp eq i64 %4, %1
  br i1 %exitcond.not, label %._crit_edge24, label %.lr.ph23, !llvm.loop !5

.lr.ph:                                           ; preds = %.lr.ph23, %.lr.ph
  %.020 = phi i64 [ %16, %.lr.ph ], [ %4, %.lr.ph23 ]
  %.01619 = phi i32 [ %spec.select, %.lr.ph ], [ %3, %.lr.ph23 ]
  %9 = getelementptr inbounds i32, ptr %0, i64 %.020
  %10 = load i32, ptr %9, align 4, !tbaa !7
  %11 = sext i32 %.01619 to i64
  %12 = getelementptr inbounds i32, ptr %0, i64 %11
  %13 = load i32, ptr %12, align 4, !tbaa !7
  %14 = icmp slt i32 %10, %13
  %15 = trunc i64 %.020 to i32
  %spec.select = select i1 %14, i32 %15, i32 %.01619
  %16 = add nuw i64 %.020, 1
  %17 = icmp ult i64 %16, %1
  br i1 %17, label %.lr.ph, label %._crit_edge, !llvm.loop !11
}

; Function Attrs: nounwind uwtable
declare hidden void @swap(ptr noundef, ptr noundef) local_unnamed_addr #0

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" }

!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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}
!7 = !{!8, !8, i64 0}
!8 = !{!"int", !9, i64 0}
!9 = !{!"omnipotent char", !10, i64 0}
!10 = !{!"Simple C/C++ TBAA"}
!11 = distinct !{!11, !6}


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