; LLVM IR from FOSS-UCSC/FOSSALGO :: algorithms/ar-ssrt/cpp/selection_sort.ll (Z7sortArrPii)

; 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: mustprogress nounwind uwtable
define dso_local void @_Z7sortArrPii(ptr noundef %0, i32 noundef %1) #1 {
  %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
  %9 = 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 %10

10:                                               ; preds = %62, %2
  %11 = load i32, ptr %5, align 4, !tbaa !9
  %12 = load i32, ptr %4, align 4, !tbaa !9
  %13 = sub nsw i32 %12, 1
  %14 = icmp slt i32 %11, %13
  br i1 %14, label %16, label %15

15:                                               ; preds = %10
  store i32 2, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  br label %65

16:                                               ; preds = %10
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  %17 = load i32, ptr %5, align 4, !tbaa !9
  store i32 %17, ptr %7, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  %18 = load i32, ptr %5, align 4, !tbaa !9
  store i32 %18, ptr %8, align 4, !tbaa !9
  br label %19

19:                                               ; preds = %58, %16
  %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 %61

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
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #2
  %39 = load ptr, ptr %3, align 8, !tbaa !5
  %40 = load i32, ptr %5, align 4, !tbaa !9
  %41 = sext i32 %40 to i64
  %42 = getelementptr inbounds i32, ptr %39, i64 %41
  %43 = load i32, ptr %42, align 4, !tbaa !9
  store i32 %43, ptr %9, align 4, !tbaa !9
  %44 = load ptr, ptr %3, align 8, !tbaa !5
  %45 = load i32, ptr %7, align 4, !tbaa !9
  %46 = sext i32 %45 to i64
  %47 = getelementptr inbounds i32, ptr %44, i64 %46
  %48 = load i32, ptr %47, align 4, !tbaa !9
  %49 = load ptr, ptr %3, align 8, !tbaa !5
  %50 = load i32, ptr %5, align 4, !tbaa !9
  %51 = sext i32 %50 to i64
  %52 = getelementptr inbounds i32, ptr %49, i64 %51
  store i32 %48, ptr %52, align 4, !tbaa !9
  %53 = load i32, ptr %9, align 4, !tbaa !9
  %54 = load ptr, ptr %3, align 8, !tbaa !5
  %55 = load i32, ptr %7, align 4, !tbaa !9
  %56 = sext i32 %55 to i64
  %57 = getelementptr inbounds i32, ptr %54, i64 %56
  store i32 %53, ptr %57, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #2
  br label %58

58:                                               ; preds = %38
  %59 = load i32, ptr %8, align 4, !tbaa !9
  %60 = add nsw i32 %59, 1
  store i32 %60, ptr %8, align 4, !tbaa !9
  br label %19, !llvm.loop !11

61:                                               ; preds = %23
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  br label %62

62:                                               ; preds = %61
  %63 = load i32, ptr %5, align 4, !tbaa !9
  %64 = add nsw i32 %63, 1
  store i32 %64, ptr %5, align 4, !tbaa !9
  br label %10, !llvm.loop !13

65:                                               ; preds = %15
  ret void
}

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

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 = !{!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 nofree norecurse nosync nounwind memory(argmem: readwrite) uwtable
define dso_local void @_Z7sortArrPii(ptr nocapture noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = icmp sgt i32 %1, 1
  br i1 %3, label %.preheader.preheader, label %._crit_edge26

.preheader.preheader:                             ; preds = %2
  %4 = add nsw i32 %1, -1
  %5 = zext nneg i32 %1 to i64
  %wide.trip.count31 = zext nneg i32 %4 to i64
  %wide.trip.count = zext nneg i32 %1 to i64
  br label %.preheader

.preheader:                                       ; preds = %.preheader.preheader, %._crit_edge
  %indvars.iv = phi i64 [ 0, %.preheader.preheader ], [ %indvars.iv.next, %._crit_edge ]
  %6 = icmp ult i64 %indvars.iv, %5
  br i1 %6, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %.preheader
  %7 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv
  %8 = trunc nuw nsw i64 %indvars.iv to i32
  %sext = shl i64 %indvars.iv, 32
  %9 = ashr exact i64 %sext, 30
  %.phi.trans.insert33 = getelementptr inbounds i8, ptr %0, i64 %9
  %.pre = load i32, ptr %.phi.trans.insert33, align 4, !tbaa !5
  br label %10

._crit_edge26:                                    ; preds = %._crit_edge, %2
  ret void

._crit_edge:                                      ; preds = %10, %.preheader
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond32.not = icmp eq i64 %indvars.iv.next, %wide.trip.count31
  br i1 %exitcond32.not, label %._crit_edge26, label %.preheader, !llvm.loop !9

10:                                               ; preds = %.lr.ph, %10
  %11 = phi i32 [ %.pre, %.lr.ph ], [ %16, %10 ]
  %indvars.iv27 = phi i64 [ %indvars.iv, %.lr.ph ], [ %indvars.iv.next28, %10 ]
  %.02223 = phi i32 [ %8, %.lr.ph ], [ %spec.select, %10 ]
  %12 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv27
  %13 = load i32, ptr %12, align 4, !tbaa !5
  %14 = icmp slt i32 %13, %11
  %15 = trunc nuw nsw i64 %indvars.iv27 to i32
  %spec.select = select i1 %14, i32 %15, i32 %.02223
  %16 = load i32, ptr %7, align 4, !tbaa !5
  %17 = sext i32 %spec.select to i64
  %18 = getelementptr inbounds i32, ptr %0, i64 %17
  %19 = load i32, ptr %18, align 4, !tbaa !5
  store i32 %19, ptr %7, align 4, !tbaa !5
  store i32 %16, ptr %18, align 4, !tbaa !5
  %indvars.iv.next28 = add nuw nsw i64 %indvars.iv27, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next28, %wide.trip.count
  br i1 %exitcond.not, label %._crit_edge, label %10, !llvm.loop !11
}

attributes #0 = { mustprogress 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++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}


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