; LLVM IR from Stephane-D/SGDK :: src (tools)

; 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: nounwind uwtable
declare dso_local zeroext i16 @partition_s16(ptr noundef, i16 noundef zeroext, i16 noundef zeroext) #1

; Function Attrs: nounwind uwtable
define dso_local void @qsort_s16(ptr noundef %0, i16 noundef zeroext %1, i16 noundef zeroext %2) #1 {
  %4 = alloca ptr, align 8
  %5 = alloca i16, align 2
  %6 = alloca i16, align 2
  %7 = alloca i16, align 2
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i16 %1, ptr %5, align 2, !tbaa !9
  store i16 %2, ptr %6, align 2, !tbaa !9
  %8 = load i16, ptr %5, align 2, !tbaa !9
  %9 = zext i16 %8 to i32
  %10 = load i16, ptr %6, align 2, !tbaa !9
  %11 = zext i16 %10 to i32
  %12 = icmp slt i32 %9, %11
  br i1 %12, label %13, label %27

13:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 2, ptr %7) #2
  %14 = load ptr, ptr %4, align 8, !tbaa !5
  %15 = load i16, ptr %5, align 2, !tbaa !9
  %16 = load i16, ptr %6, align 2, !tbaa !9
  %17 = call zeroext i16 @partition_s16(ptr noundef %14, i16 noundef zeroext %15, i16 noundef zeroext %16)
  store i16 %17, ptr %7, align 2, !tbaa !9
  %18 = load ptr, ptr %4, align 8, !tbaa !5
  %19 = load i16, ptr %5, align 2, !tbaa !9
  %20 = load i16, ptr %7, align 2, !tbaa !9
  call void @qsort_s16(ptr noundef %18, i16 noundef zeroext %19, i16 noundef zeroext %20)
  %21 = load ptr, ptr %4, align 8, !tbaa !5
  %22 = load i16, ptr %7, align 2, !tbaa !9
  %23 = zext i16 %22 to i32
  %24 = add nsw i32 %23, 1
  %25 = trunc i32 %24 to i16
  %26 = load i16, ptr %6, align 2, !tbaa !9
  call void @qsort_s16(ptr noundef %21, i16 noundef zeroext %25, i16 noundef zeroext %26)
  call void @llvm.lifetime.end.p0(i64 2, ptr %7) #2
  br label %27

27:                                               ; preds = %13, %3
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"short", !7, i64 0}


; 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 zeroext i16 @partition_s16(ptr noundef, i16 noundef zeroext, i16 noundef zeroext) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @qsort_s16(ptr noundef %0, i16 noundef zeroext %1, i16 noundef zeroext %2) local_unnamed_addr #0 {
  %4 = icmp ult i16 %1, %2
  br i1 %4, label %tailrecurse, label %tailrecurse._crit_edge

tailrecurse:                                      ; preds = %3, %tailrecurse
  %.tr1012 = phi i16 [ %6, %tailrecurse ], [ %1, %3 ]
  %5 = tail call zeroext i16 @partition_s16(ptr noundef %0, i16 noundef zeroext %.tr1012, i16 noundef zeroext %2)
  tail call void @qsort_s16(ptr noundef %0, i16 noundef zeroext %.tr1012, i16 noundef zeroext %5)
  %6 = add i16 %5, 1
  %7 = icmp ult i16 %6, %2
  br i1 %7, label %tailrecurse, label %tailrecurse._crit_edge

tailrecurse._crit_edge:                           ; preds = %tailrecurse, %3
  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)"}


; Effective O3 passes: GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass