; LLVM IR from h-ssiqueira/Sort_Algorithms :: src/exchange (optimizedGnomeSort)

; 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 @optimizedGnomeSort(ptr noundef %0, i32 noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i64, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  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 8, ptr %5) #2
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #2
  %8 = load ptr, ptr %3, align 8, !tbaa !5
  store ptr %8, ptr %7, align 8, !tbaa !5
  br label %9

9:                                                ; preds = %44, %2
  %10 = load ptr, ptr %7, align 8, !tbaa !5
  %11 = load ptr, ptr %3, align 8, !tbaa !5
  %12 = load i32, ptr %4, align 4, !tbaa !9
  %13 = sext i32 %12 to i64
  %14 = getelementptr inbounds i64, ptr %11, i64 %13
  %15 = icmp ult ptr %10, %14
  br i1 %15, label %16, label %47

16:                                               ; preds = %9
  %17 = load ptr, ptr %7, align 8, !tbaa !5
  store ptr %17, ptr %6, align 8, !tbaa !5
  br label %18

18:                                               ; preds = %31, %16
  %19 = load ptr, ptr %6, align 8, !tbaa !5
  %20 = load ptr, ptr %3, align 8, !tbaa !5
  %21 = icmp ugt ptr %19, %20
  br i1 %21, label %22, label %29

22:                                               ; preds = %18
  %23 = load ptr, ptr %6, align 8, !tbaa !5
  %24 = getelementptr inbounds i64, ptr %23, i64 -1
  %25 = load i64, ptr %24, align 8, !tbaa !11
  %26 = load ptr, ptr %6, align 8, !tbaa !5
  %27 = load i64, ptr %26, align 8, !tbaa !11
  %28 = icmp sgt i64 %25, %27
  br label %29

29:                                               ; preds = %22, %18
  %30 = phi i1 [ false, %18 ], [ %28, %22 ]
  br i1 %30, label %31, label %43

31:                                               ; preds = %29
  %32 = load ptr, ptr %6, align 8, !tbaa !5
  %33 = load i64, ptr %32, align 8, !tbaa !11
  store i64 %33, ptr %5, align 8, !tbaa !11
  %34 = load ptr, ptr %6, align 8, !tbaa !5
  %35 = getelementptr inbounds i64, ptr %34, i64 -1
  %36 = load i64, ptr %35, align 8, !tbaa !11
  %37 = load ptr, ptr %6, align 8, !tbaa !5
  store i64 %36, ptr %37, align 8, !tbaa !11
  %38 = load i64, ptr %5, align 8, !tbaa !11
  %39 = load ptr, ptr %6, align 8, !tbaa !5
  %40 = getelementptr inbounds i64, ptr %39, i64 -1
  store i64 %38, ptr %40, align 8, !tbaa !11
  %41 = load ptr, ptr %6, align 8, !tbaa !5
  %42 = getelementptr inbounds i64, ptr %41, i32 -1
  store ptr %42, ptr %6, align 8, !tbaa !5
  br label %18, !llvm.loop !13

43:                                               ; preds = %29
  br label %44

44:                                               ; preds = %43
  %45 = load ptr, ptr %7, align 8, !tbaa !5
  %46 = getelementptr inbounds i64, ptr %45, i32 1
  store ptr %46, ptr %7, align 8, !tbaa !5
  br label %9, !llvm.loop !15

47:                                               ; preds = %9
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  call void @llvm.lifetime.end.p0(i64 8, 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 = !{!12, !12, i64 0}
!12 = !{!"long", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}
!15 = distinct !{!15, !14}


; 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(readwrite, inaccessiblemem: none) uwtable
define dso_local void @optimizedGnomeSort(ptr noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = sext i32 %1 to i64
  %4 = getelementptr inbounds i64, ptr %0, i64 %3
  %5 = icmp sgt i32 %1, 0
  br i1 %5, label %.preheader, label %._crit_edge

.preheader:                                       ; preds = %2, %.critedge
  %.020 = phi ptr [ %12, %.critedge ], [ %0, %2 ]
  %6 = icmp ugt ptr %.020, %0
  br i1 %6, label %.lr.ph.preheader, label %.critedge

.lr.ph.preheader:                                 ; preds = %.preheader
  %.pre = load i64, ptr %.020, align 8, !tbaa !5
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.preheader, %10
  %.01518 = phi ptr [ %7, %10 ], [ %.020, %.lr.ph.preheader ]
  %7 = getelementptr inbounds i8, ptr %.01518, i64 -8
  %8 = load i64, ptr %7, align 8, !tbaa !5
  %9 = icmp sgt i64 %8, %.pre
  br i1 %9, label %10, label %.critedge

10:                                               ; preds = %.lr.ph
  store i64 %8, ptr %.01518, align 8, !tbaa !5
  store i64 %.pre, ptr %7, align 8, !tbaa !5
  %11 = icmp ugt ptr %7, %0
  br i1 %11, label %.lr.ph, label %.critedge, !llvm.loop !9

.critedge:                                        ; preds = %10, %.lr.ph, %.preheader
  %12 = getelementptr inbounds i8, ptr %.020, i64 8
  %13 = icmp ult ptr %12, %4
  br i1 %13, label %.preheader, label %._crit_edge, !llvm.loop !11

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

attributes #0 = { nofree norecurse nosync nounwind memory(readwrite, inaccessiblemem: none) 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 = !{!"long", !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: EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass