; LLVM IR from MakeContributions/DSA :: algorithms/C/sorting (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: nounwind uwtable
declare dso_local void @swap(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: 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
  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
  store i32 0, ptr %5, align 4, !tbaa !9
  br label %7

7:                                                ; preds = %45, %2
  %8 = load i32, ptr %5, align 4, !tbaa !9
  %9 = load i32, ptr %4, align 4, !tbaa !9
  %10 = sub nsw i32 %9, 1
  %11 = icmp slt i32 %8, %10
  br i1 %11, label %12, label %48

12:                                               ; preds = %7
  %13 = load i32, ptr %5, align 4, !tbaa !9
  %14 = add nsw i32 %13, 1
  store i32 %14, ptr %6, align 4, !tbaa !9
  br label %15

15:                                               ; preds = %41, %12
  %16 = load i32, ptr %6, align 4, !tbaa !9
  %17 = load i32, ptr %4, align 4, !tbaa !9
  %18 = icmp slt i32 %16, %17
  br i1 %18, label %19, label %44

19:                                               ; preds = %15
  %20 = load ptr, ptr %3, align 8, !tbaa !5
  %21 = load i32, ptr %5, align 4, !tbaa !9
  %22 = sext i32 %21 to i64
  %23 = getelementptr inbounds i32, ptr %20, i64 %22
  %24 = load i32, ptr %23, align 4, !tbaa !9
  %25 = load ptr, ptr %3, align 8, !tbaa !5
  %26 = load i32, ptr %6, 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 = icmp sgt i32 %24, %29
  br i1 %30, label %31, label %40

31:                                               ; preds = %19
  %32 = load ptr, ptr %3, align 8, !tbaa !5
  %33 = load i32, ptr %5, align 4, !tbaa !9
  %34 = sext i32 %33 to i64
  %35 = getelementptr inbounds i32, ptr %32, i64 %34
  %36 = load ptr, ptr %3, align 8, !tbaa !5
  %37 = load i32, ptr %6, align 4, !tbaa !9
  %38 = sext i32 %37 to i64
  %39 = getelementptr inbounds i32, ptr %36, i64 %38
  call void @swap(ptr noundef %35, ptr noundef %39)
  br label %40

40:                                               ; preds = %31, %19
  br label %41

41:                                               ; preds = %40
  %42 = load i32, ptr %6, align 4, !tbaa !9
  %43 = add nsw i32 %42, 1
  store i32 %43, ptr %6, align 4, !tbaa !9
  br label %15, !llvm.loop !11

44:                                               ; preds = %15
  br label %45

45:                                               ; preds = %44
  %46 = load i32, ptr %5, align 4, !tbaa !9
  %47 = add nsw i32 %46, 1
  store i32 %47, ptr %5, align 4, !tbaa !9
  br label %7, !llvm.loop !13

48:                                               ; preds = %7
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  ret void
}

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

; Function Attrs: nounwind uwtable
define dso_local void @selectionSort(ptr noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = icmp sgt i32 %1, 1
  br i1 %3, label %.lr.ph17.preheader, label %._crit_edge

.lr.ph17.preheader:                               ; preds = %2
  %4 = add nsw i32 %1, -1
  %wide.trip.count24 = zext nneg i32 %4 to i64
  %wide.trip.count = zext nneg i32 %1 to i64
  br label %.lr.ph

.loopexit:                                        ; preds = %12
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond25.not = icmp eq i64 %indvars.iv.next22, %wide.trip.count24
  br i1 %exitcond25.not, label %._crit_edge, label %.lr.ph, !llvm.loop !5

.lr.ph:                                           ; preds = %.loopexit, %.lr.ph17.preheader
  %indvars.iv21 = phi i64 [ 0, %.lr.ph17.preheader ], [ %indvars.iv.next22, %.loopexit ]
  %indvars.iv = phi i64 [ 1, %.lr.ph17.preheader ], [ %indvars.iv.next, %.loopexit ]
  %indvars.iv.next22 = add nuw nsw i64 %indvars.iv21, 1
  %5 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv21
  br label %6

6:                                                ; preds = %.lr.ph, %12
  %indvars.iv18 = phi i64 [ %indvars.iv, %.lr.ph ], [ %indvars.iv.next19, %12 ]
  %7 = load i32, ptr %5, align 4, !tbaa !7
  %8 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv18
  %9 = load i32, ptr %8, align 4, !tbaa !7
  %10 = icmp sgt i32 %7, %9
  br i1 %10, label %11, label %12

11:                                               ; preds = %6
  tail call void @swap(ptr noundef nonnull %5, ptr noundef nonnull %8)
  br label %12

12:                                               ; preds = %6, %11
  %indvars.iv.next19 = add nuw nsw i64 %indvars.iv18, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next19, %wide.trip.count
  br i1 %exitcond.not, label %.loopexit, label %6, !llvm.loop !11

._crit_edge:                                      ; preds = %.loopexit, %2
  ret void
}

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,JumpThreadingPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SCCPPass,SROAPass,SimplifyCFGPass,TailCallElimPass