; LLVM IR from ST1LLWATER/Sorting-Algorithms :: C++/SelectionSort.ll (Z13selectionSortPii)

; 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 @_Z13selectionSortPii(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
  %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 = %68, %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 %71

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
  %19 = add nsw i32 %18, 1
  store i32 %19, ptr %8, align 4, !tbaa !9
  br label %20

20:                                               ; preds = %40, %16
  %21 = load i32, ptr %8, align 4, !tbaa !9
  %22 = load i32, ptr %4, align 4, !tbaa !9
  %23 = icmp slt i32 %21, %22
  br i1 %23, label %25, label %24

24:                                               ; preds = %20
  store i32 5, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  br label %43

25:                                               ; preds = %20
  %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 %20, !llvm.loop !11

43:                                               ; preds = %24
  %44 = load i32, ptr %7, align 4, !tbaa !9
  %45 = load i32, ptr %5, align 4, !tbaa !9
  %46 = icmp ne i32 %44, %45
  br i1 %46, label %47, label %67

47:                                               ; preds = %43
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #2
  %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
  %52 = load i32, ptr %51, align 4, !tbaa !9
  store i32 %52, ptr %9, align 4, !tbaa !9
  %53 = load ptr, ptr %3, align 8, !tbaa !5
  %54 = load i32, ptr %5, align 4, !tbaa !9
  %55 = sext i32 %54 to i64
  %56 = getelementptr inbounds i32, ptr %53, i64 %55
  %57 = load i32, ptr %56, align 4, !tbaa !9
  %58 = load ptr, ptr %3, align 8, !tbaa !5
  %59 = load i32, ptr %7, align 4, !tbaa !9
  %60 = sext i32 %59 to i64
  %61 = getelementptr inbounds i32, ptr %58, i64 %60
  store i32 %57, ptr %61, align 4, !tbaa !9
  %62 = load i32, ptr %9, align 4, !tbaa !9
  %63 = load ptr, ptr %3, align 8, !tbaa !5
  %64 = load i32, ptr %5, align 4, !tbaa !9
  %65 = sext i32 %64 to i64
  %66 = getelementptr inbounds i32, ptr %63, i64 %65
  store i32 %62, ptr %66, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #2
  br label %67

67:                                               ; preds = %47, %43
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  br label %68

68:                                               ; preds = %67
  %69 = load i32, ptr %5, align 4, !tbaa !9
  %70 = add nsw i32 %69, 1
  store i32 %70, ptr %5, align 4, !tbaa !9
  br label %10, !llvm.loop !13

71:                                               ; preds = %15
  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 = { 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 = { 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 @_Z13selectionSortPii(ptr nocapture noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = icmp sgt i32 %1, 1
  br i1 %3, label %.lr.ph29.preheader, label %._crit_edge30

.lr.ph29.preheader:                               ; preds = %2
  %4 = add nsw i32 %1, -1
  %wide.trip.count37 = zext nneg i32 %4 to i64
  %wide.trip.count = zext nneg i32 %1 to i64
  br label %.lr.ph.preheader

._crit_edge30:                                    ; preds = %20, %2
  ret void

.lr.ph.preheader:                                 ; preds = %20, %.lr.ph29.preheader
  %indvars.iv34 = phi i64 [ 0, %.lr.ph29.preheader ], [ %indvars.iv.next35, %20 ]
  %indvars.iv = phi i64 [ 1, %.lr.ph29.preheader ], [ %indvars.iv.next, %20 ]
  %indvars.iv.next35 = add nuw nsw i64 %indvars.iv34, 1
  %5 = trunc nuw nsw i64 %indvars.iv34 to i32
  br label %.lr.ph

._crit_edge:                                      ; preds = %.lr.ph
  %6 = zext i32 %spec.select to i64
  %.not = icmp eq i64 %indvars.iv34, %6
  br i1 %.not, label %20, label %14

.lr.ph:                                           ; preds = %.lr.ph.preheader, %.lr.ph
  %indvars.iv31 = phi i64 [ %indvars.iv, %.lr.ph.preheader ], [ %indvars.iv.next32, %.lr.ph ]
  %.02425 = phi i32 [ %5, %.lr.ph.preheader ], [ %spec.select, %.lr.ph ]
  %7 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv31
  %8 = load i32, ptr %7, align 4, !tbaa !5
  %9 = sext i32 %.02425 to i64
  %10 = getelementptr inbounds i32, ptr %0, i64 %9
  %11 = load i32, ptr %10, align 4, !tbaa !5
  %12 = icmp slt i32 %8, %11
  %13 = trunc nuw nsw i64 %indvars.iv31 to i32
  %spec.select = select i1 %12, i32 %13, i32 %.02425
  %indvars.iv.next32 = add nuw nsw i64 %indvars.iv31, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next32, %wide.trip.count
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !9

14:                                               ; preds = %._crit_edge
  %15 = sext i32 %spec.select to i64
  %16 = getelementptr inbounds i32, ptr %0, i64 %15
  %17 = load i32, ptr %16, align 4, !tbaa !5
  %18 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv34
  %19 = load i32, ptr %18, align 4, !tbaa !5
  store i32 %19, ptr %16, align 4, !tbaa !5
  store i32 %17, ptr %18, align 4, !tbaa !5
  br label %20

20:                                               ; preds = %14, %._crit_edge
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond38.not = icmp eq i64 %indvars.iv.next35, %wide.trip.count37
  br i1 %exitcond38.not, label %._crit_edge30, label %.lr.ph.preheader, !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: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SCCPPass,SROAPass,SimplifyCFGPass