; LLVM IR from mahendramahara/DSA-in-C-Programing :: SORTING (All-Sorting-Algorithms-Implementation)

; 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 @selectionSort(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
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  store i32 0, ptr %5, align 4, !tbaa !9
  br label %9

9:                                                ; preds = %60, %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 %14, label %63

14:                                               ; preds = %9
  %15 = load i32, ptr %5, align 4, !tbaa !9
  store i32 %15, ptr %7, align 4, !tbaa !9
  %16 = load i32, ptr %5, align 4, !tbaa !9
  %17 = add nsw i32 %16, 1
  store i32 %17, ptr %6, align 4, !tbaa !9
  br label %18

18:                                               ; preds = %37, %14
  %19 = load i32, ptr %6, align 4, !tbaa !9
  %20 = load i32, ptr %4, align 4, !tbaa !9
  %21 = icmp slt i32 %19, %20
  br i1 %21, label %22, label %40

22:                                               ; preds = %18
  %23 = load ptr, ptr %3, align 8, !tbaa !5
  %24 = load i32, ptr %6, align 4, !tbaa !9
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds i32, ptr %23, i64 %25
  %27 = load i32, ptr %26, align 4, !tbaa !9
  %28 = load ptr, ptr %3, align 8, !tbaa !5
  %29 = load i32, ptr %7, align 4, !tbaa !9
  %30 = sext i32 %29 to i64
  %31 = getelementptr inbounds i32, ptr %28, i64 %30
  %32 = load i32, ptr %31, align 4, !tbaa !9
  %33 = icmp slt i32 %27, %32
  br i1 %33, label %34, label %36

34:                                               ; preds = %22
  %35 = load i32, ptr %6, align 4, !tbaa !9
  store i32 %35, ptr %7, align 4, !tbaa !9
  br label %36

36:                                               ; preds = %34, %22
  br label %37

37:                                               ; preds = %36
  %38 = load i32, ptr %6, align 4, !tbaa !9
  %39 = add nsw i32 %38, 1
  store i32 %39, ptr %6, align 4, !tbaa !9
  br label %18, !llvm.loop !11

40:                                               ; preds = %18
  %41 = load ptr, ptr %3, align 8, !tbaa !5
  %42 = load i32, ptr %7, align 4, !tbaa !9
  %43 = sext i32 %42 to i64
  %44 = getelementptr inbounds i32, ptr %41, i64 %43
  %45 = load i32, ptr %44, align 4, !tbaa !9
  store i32 %45, ptr %8, align 4, !tbaa !9
  %46 = load ptr, ptr %3, align 8, !tbaa !5
  %47 = load i32, ptr %5, align 4, !tbaa !9
  %48 = sext i32 %47 to i64
  %49 = getelementptr inbounds i32, ptr %46, i64 %48
  %50 = load i32, ptr %49, align 4, !tbaa !9
  %51 = load ptr, ptr %3, align 8, !tbaa !5
  %52 = load i32, ptr %7, align 4, !tbaa !9
  %53 = sext i32 %52 to i64
  %54 = getelementptr inbounds i32, ptr %51, i64 %53
  store i32 %50, ptr %54, align 4, !tbaa !9
  %55 = load i32, ptr %8, align 4, !tbaa !9
  %56 = load ptr, ptr %3, align 8, !tbaa !5
  %57 = load i32, ptr %5, align 4, !tbaa !9
  %58 = sext i32 %57 to i64
  %59 = getelementptr inbounds i32, ptr %56, i64 %58
  store i32 %55, ptr %59, align 4, !tbaa !9
  br label %60

60:                                               ; preds = %40
  %61 = load i32, ptr %5, align 4, !tbaa !9
  %62 = add nsw i32 %61, 1
  store i32 %62, ptr %5, align 4, !tbaa !9
  br label %9, !llvm.loop !13

63:                                               ; preds = %9
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  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 = { 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"}
!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: nofree norecurse nosync nounwind memory(argmem: readwrite) uwtable
define dso_local void @selectionSort(ptr nocapture noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = icmp sgt i32 %1, 1
  br i1 %3, label %.lr.ph27.preheader, label %._crit_edge28

.lr.ph27.preheader:                               ; preds = %2
  %4 = add nsw i32 %1, -1
  %wide.trip.count35 = zext nneg i32 %4 to i64
  %wide.trip.count = zext nneg i32 %1 to i64
  br label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %._crit_edge, %.lr.ph27.preheader
  %indvars.iv32 = phi i64 [ 0, %.lr.ph27.preheader ], [ %indvars.iv.next33, %._crit_edge ]
  %indvars.iv = phi i64 [ 1, %.lr.ph27.preheader ], [ %indvars.iv.next, %._crit_edge ]
  %indvars.iv.next33 = add nuw nsw i64 %indvars.iv32, 1
  %5 = trunc nuw nsw i64 %indvars.iv32 to i32
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.preheader, %.lr.ph
  %indvars.iv29 = phi i64 [ %indvars.iv, %.lr.ph.preheader ], [ %indvars.iv.next30, %.lr.ph ]
  %.02124 = phi i32 [ %5, %.lr.ph.preheader ], [ %spec.select, %.lr.ph ]
  %6 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv29
  %7 = load i32, ptr %6, align 4, !tbaa !5
  %8 = sext i32 %.02124 to i64
  %9 = getelementptr inbounds i32, ptr %0, i64 %8
  %10 = load i32, ptr %9, align 4, !tbaa !5
  %11 = icmp slt i32 %7, %10
  %12 = trunc nuw nsw i64 %indvars.iv29 to i32
  %spec.select = select i1 %11, i32 %12, i32 %.02124
  %indvars.iv.next30 = add nuw nsw i64 %indvars.iv29, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next30, %wide.trip.count
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !9

._crit_edge:                                      ; preds = %.lr.ph
  %13 = sext i32 %spec.select to i64
  %14 = getelementptr inbounds i32, ptr %0, i64 %13
  %15 = load i32, ptr %14, align 4, !tbaa !5
  %16 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv32
  %17 = load i32, ptr %16, align 4, !tbaa !5
  store i32 %17, ptr %14, align 4, !tbaa !5
  store i32 %15, ptr %16, align 4, !tbaa !5
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond36.not = icmp eq i64 %indvars.iv.next33, %wide.trip.count35
  br i1 %exitcond36.not, label %._crit_edge28, label %.lr.ph.preheader, !llvm.loop !11

._crit_edge28:                                    ; preds = %._crit_edge, %2
  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"}
!11 = distinct !{!11, !10}


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