; LLVM IR from 4N1Z/Sorting-Searching-Algorithms :: Sorting/Insertion Sort/in_C++.ll (Z13insertionSortPii)

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

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z13insertionSortPii(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
  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 1, ptr %5, align 4, !tbaa !9
  br label %8

8:                                                ; preds = %54, %2
  %9 = load i32, ptr %5, align 4, !tbaa !9
  %10 = load i32, ptr %4, align 4, !tbaa !9
  %11 = icmp slt i32 %9, %10
  br i1 %11, label %13, label %12

12:                                               ; preds = %8
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  br label %57

13:                                               ; preds = %8
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  %14 = load ptr, ptr %3, align 8, !tbaa !5
  %15 = load i32, ptr %5, align 4, !tbaa !9
  %16 = sext i32 %15 to i64
  %17 = getelementptr inbounds i32, ptr %14, i64 %16
  %18 = load i32, ptr %17, align 4, !tbaa !9
  store i32 %18, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  %19 = load i32, ptr %5, align 4, !tbaa !9
  %20 = sub nsw i32 %19, 1
  store i32 %20, ptr %7, align 4, !tbaa !9
  br label %21

21:                                               ; preds = %34, %13
  %22 = load i32, ptr %6, align 4, !tbaa !9
  %23 = load ptr, ptr %3, align 8, !tbaa !5
  %24 = load i32, ptr %7, 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 = icmp slt i32 %22, %27
  br i1 %28, label %29, label %32

29:                                               ; preds = %21
  %30 = load i32, ptr %7, align 4, !tbaa !9
  %31 = icmp sge i32 %30, 0
  br label %32

32:                                               ; preds = %29, %21
  %33 = phi i1 [ false, %21 ], [ %31, %29 ]
  br i1 %33, label %34, label %47

34:                                               ; preds = %32
  %35 = load ptr, ptr %3, align 8, !tbaa !5
  %36 = load i32, ptr %7, align 4, !tbaa !9
  %37 = sext i32 %36 to i64
  %38 = getelementptr inbounds i32, ptr %35, i64 %37
  %39 = load i32, ptr %38, align 4, !tbaa !9
  %40 = load ptr, ptr %3, align 8, !tbaa !5
  %41 = load i32, ptr %7, align 4, !tbaa !9
  %42 = add nsw i32 %41, 1
  %43 = sext i32 %42 to i64
  %44 = getelementptr inbounds i32, ptr %40, i64 %43
  store i32 %39, ptr %44, align 4, !tbaa !9
  %45 = load i32, ptr %7, align 4, !tbaa !9
  %46 = add nsw i32 %45, -1
  store i32 %46, ptr %7, align 4, !tbaa !9
  br label %21, !llvm.loop !11

47:                                               ; preds = %32
  %48 = load i32, ptr %6, align 4, !tbaa !9
  %49 = load ptr, ptr %3, align 8, !tbaa !5
  %50 = load i32, ptr %7, align 4, !tbaa !9
  %51 = add nsw i32 %50, 1
  %52 = sext i32 %51 to i64
  %53 = getelementptr inbounds i32, ptr %49, i64 %52
  store i32 %48, ptr %53, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  br label %54

54:                                               ; preds = %47
  %55 = load i32, ptr %5, align 4, !tbaa !9
  %56 = add nsw i32 %55, 1
  store i32 %56, ptr %5, align 4, !tbaa !9
  br label %8, !llvm.loop !13

57:                                               ; preds = %12
  ret void
}

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 @_Z13insertionSortPii(ptr nocapture 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.count = zext nneg i32 %4 to i64
  %invariant.gep = getelementptr i8, ptr %0, i64 -4
  br label %.lr.ph24

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

.lr.ph24:                                         ; preds = %.lr.ph24.preheader, %._crit_edge
  %indvars.iv28 = phi i64 [ 1, %.lr.ph24.preheader ], [ %indvars.iv.next29, %._crit_edge ]
  %indvars.iv = phi i64 [ 0, %.lr.ph24.preheader ], [ %indvars.iv.next, %._crit_edge ]
  %5 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv28
  %6 = load i32, ptr %5, align 4, !tbaa !5
  %gep = getelementptr i32, ptr %invariant.gep, i64 %indvars.iv28
  %7 = load i32, ptr %gep, align 4, !tbaa !5
  %8 = icmp slt i32 %6, %7
  br i1 %8, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %.lr.ph24, %.lr.ph
  %indvars.iv30 = phi i64 [ %indvars.iv.next31, %.lr.ph ], [ %indvars.iv28, %.lr.ph24 ]
  %indvars.iv26 = phi i64 [ %indvars.iv.next27, %.lr.ph ], [ %indvars.iv, %.lr.ph24 ]
  %9 = phi i32 [ %12, %.lr.ph ], [ %7, %.lr.ph24 ]
  %10 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv30
  store i32 %9, ptr %10, align 4, !tbaa !5
  %indvars.iv.next27 = add nsw i64 %indvars.iv26, -1
  %11 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv.next27
  %12 = load i32, ptr %11, align 4, !tbaa !5
  %13 = icmp slt i32 %6, %12
  %14 = icmp sgt i64 %indvars.iv26, 0
  %15 = and i1 %14, %13
  %indvars.iv.next31 = add nsw i64 %indvars.iv30, -1
  br i1 %15, label %.lr.ph, label %._crit_edge, !llvm.loop !9

._crit_edge:                                      ; preds = %.lr.ph, %.lr.ph24
  %.0.in.lcssa.in = phi i64 [ %indvars.iv28, %.lr.ph24 ], [ %indvars.iv26, %.lr.ph ]
  %sext = shl i64 %.0.in.lcssa.in, 32
  %16 = ashr exact i64 %sext, 30
  %17 = getelementptr inbounds i8, ptr %0, i64 %16
  store i32 %6, ptr %17, align 4, !tbaa !5
  %indvars.iv.next29 = add nuw nsw i64 %indvars.iv28, 1
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %._crit_edge25, label %.lr.ph24, !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,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass