; LLVM IR from ahampriyanshu/algo-ds-101 :: Algorithms/Sorting/Selection_Sort/Selection_Sort.ll (Z14selection_sortPii)

; 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 @_Z14selection_sortPii(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) #3
  store i32 0, ptr %5, align 4, !tbaa !9
  br label %9

9:                                                ; preds = %52, %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) #3
  br label %55

15:                                               ; preds = %9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  %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) #3
  %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 = %40, %15
  %20 = load i32, ptr %8, align 4, !tbaa !9
  %21 = load i32, ptr %4, align 4, !tbaa !9
  %22 = sub nsw i32 %21, 1
  %23 = icmp sle i32 %20, %22
  br i1 %23, label %25, label %24

24:                                               ; preds = %19
  store i32 5, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #3
  br label %43

25:                                               ; preds = %19
  %26 = load ptr, ptr %3, align 8, !tbaa !5
  %27 = load i32, ptr %8, align 4, !tbaa !9
  %28 = sext i32 %27 to i64
  %29 = getelementptr inbounds i32, ptr %26, i64 %28
  %30 = load i32, ptr %29, align 4, !tbaa !9
  %31 = load ptr, ptr %3, align 8, !tbaa !5
  %32 = load i32, ptr %7, align 4, !tbaa !9
  %33 = sext i32 %32 to i64
  %34 = getelementptr inbounds i32, ptr %31, i64 %33
  %35 = load i32, ptr %34, align 4, !tbaa !9
  %36 = icmp slt i32 %30, %35
  br i1 %36, label %37, label %39

37:                                               ; preds = %25
  %38 = load i32, ptr %8, align 4, !tbaa !9
  store i32 %38, ptr %7, align 4, !tbaa !9
  br label %39

39:                                               ; preds = %37, %25
  br label %40

40:                                               ; preds = %39
  %41 = load i32, ptr %8, align 4, !tbaa !9
  %42 = add nsw i32 %41, 1
  store i32 %42, ptr %8, align 4, !tbaa !9
  br label %19, !llvm.loop !11

43:                                               ; preds = %24
  %44 = load ptr, ptr %3, align 8, !tbaa !5
  %45 = load i32, ptr %5, align 4, !tbaa !9
  %46 = sext i32 %45 to i64
  %47 = getelementptr inbounds i32, ptr %44, i64 %46
  %48 = load ptr, ptr %3, align 8, !tbaa !5
  %49 = load i32, ptr %7, align 4, !tbaa !9
  %50 = sext i32 %49 to i64
  %51 = getelementptr inbounds i32, ptr %48, i64 %50
  call void @_ZSt4swapIiENSt9enable_ifIXsr6__and_ISt6__not_ISt15__is_tuple_likeIT_EESt21is_move_constructibleIS3_ESt18is_move_assignableIS3_EEE5valueEvE4typeERS3_SC_(ptr noundef nonnull align 4 dereferenceable(4) %47, ptr noundef nonnull align 4 dereferenceable(4) %51) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  br label %52

52:                                               ; preds = %43
  %53 = load i32, ptr %5, align 4, !tbaa !9
  %54 = add nsw i32 %53, 1
  store i32 %54, ptr %5, align 4, !tbaa !9
  br label %9, !llvm.loop !13

55:                                               ; 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

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZSt4swapIiENSt9enable_ifIXsr6__and_ISt6__not_ISt15__is_tuple_likeIT_EESt21is_move_constructibleIS3_ESt18is_move_assignableIS3_EEE5valueEvE4typeERS3_SC_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #2

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 = { inlinehint 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 #3 = { 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
define dso_local void @_Z14selection_sortPii(ptr noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = icmp sgt i32 %1, 1
  br i1 %3, label %.lr.ph24.preheader, label %._crit_edge25

.lr.ph24.preheader:                               ; preds = %2
  %4 = add nsw i32 %1, -1
  %wide.trip.count32 = zext nneg i32 %4 to i64
  %wide.trip.count = zext nneg i32 %1 to i64
  br label %.lr.ph.preheader

._crit_edge25:                                    ; preds = %._crit_edge, %2
  ret void

.lr.ph.preheader:                                 ; preds = %._crit_edge, %.lr.ph24.preheader
  %indvars.iv29 = phi i64 [ 0, %.lr.ph24.preheader ], [ %indvars.iv.next30, %._crit_edge ]
  %indvars.iv = phi i64 [ 1, %.lr.ph24.preheader ], [ %indvars.iv.next, %._crit_edge ]
  %indvars.iv.next30 = add nuw nsw i64 %indvars.iv29, 1
  %5 = trunc nuw nsw i64 %indvars.iv29 to i32
  br label %.lr.ph

._crit_edge:                                      ; preds = %.lr.ph
  %6 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv29
  %7 = sext i32 %spec.select to i64
  %8 = getelementptr inbounds i32, ptr %0, i64 %7
  tail call void @_ZSt4swapIiENSt9enable_ifIXsr6__and_ISt6__not_ISt15__is_tuple_likeIT_EESt21is_move_constructibleIS3_ESt18is_move_assignableIS3_EEE5valueEvE4typeERS3_SC_(ptr noundef nonnull align 4 dereferenceable(4) %6, ptr noundef nonnull align 4 dereferenceable(4) %8) #2
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond33.not = icmp eq i64 %indvars.iv.next30, %wide.trip.count32
  br i1 %exitcond33.not, label %._crit_edge25, label %.lr.ph.preheader, !llvm.loop !5

.lr.ph:                                           ; preds = %.lr.ph.preheader, %.lr.ph
  %indvars.iv26 = phi i64 [ %indvars.iv, %.lr.ph.preheader ], [ %indvars.iv.next27, %.lr.ph ]
  %.01620 = phi i32 [ %5, %.lr.ph.preheader ], [ %spec.select, %.lr.ph ]
  %9 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv26
  %10 = load i32, ptr %9, align 4, !tbaa !7
  %11 = sext i32 %.01620 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 nuw nsw i64 %indvars.iv26 to i32
  %spec.select = select i1 %14, i32 %15, i32 %.01620
  %indvars.iv.next27 = add nuw nsw i64 %indvars.iv26, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next27, %wide.trip.count
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !11
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZSt4swapIiENSt9enable_ifIXsr6__and_ISt6__not_ISt15__is_tuple_likeIT_EESt21is_move_constructibleIS3_ESt18is_move_assignableIS3_EEE5valueEvE4typeERS3_SC_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #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 = { inlinehint 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 #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 = 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++ TBAA"}
!11 = distinct !{!11, !6}


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