; LLVM IR from tevador/RandomX :: src/tests/benchmark.ll (Z7hex2binPKciPc)

; 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
declare dso_local noundef signext i8 @_Z11parseNibblec(i8 noundef signext) #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z7hex2binPKciPc(ptr noundef %0, i32 noundef %1, ptr noundef %2) #0 {
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i8, align 1
  %9 = alloca i8, align 1
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  store ptr %2, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  store i32 0, ptr %7, align 4, !tbaa !9
  br label %10

10:                                               ; preds = %33, %3
  %11 = load i32, ptr %7, align 4, !tbaa !9
  %12 = load i32, ptr %5, align 4, !tbaa !9
  %13 = icmp slt i32 %11, %12
  br i1 %13, label %15, label %14

14:                                               ; preds = %10
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  br label %36

15:                                               ; preds = %10
  call void @llvm.lifetime.start.p0(i64 1, ptr %8) #2
  %16 = load ptr, ptr %4, align 8, !tbaa !5
  %17 = getelementptr inbounds i8, ptr %16, i32 1
  store ptr %17, ptr %4, align 8, !tbaa !5
  %18 = load i8, ptr %16, align 1, !tbaa !11
  %19 = call noundef signext i8 @_Z11parseNibblec(i8 noundef signext %18)
  store i8 %19, ptr %8, align 1, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 1, ptr %9) #2
  %20 = load ptr, ptr %4, align 8, !tbaa !5
  %21 = getelementptr inbounds i8, ptr %20, i32 1
  store ptr %21, ptr %4, align 8, !tbaa !5
  %22 = load i8, ptr %20, align 1, !tbaa !11
  %23 = call noundef signext i8 @_Z11parseNibblec(i8 noundef signext %22)
  store i8 %23, ptr %9, align 1, !tbaa !11
  %24 = load i8, ptr %8, align 1, !tbaa !11
  %25 = sext i8 %24 to i32
  %26 = shl i32 %25, 4
  %27 = load i8, ptr %9, align 1, !tbaa !11
  %28 = sext i8 %27 to i32
  %29 = or i32 %26, %28
  %30 = trunc i32 %29 to i8
  %31 = load ptr, ptr %6, align 8, !tbaa !5
  %32 = getelementptr inbounds i8, ptr %31, i32 1
  store ptr %32, ptr %6, align 8, !tbaa !5
  store i8 %30, ptr %31, align 1, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 1, ptr %9) #2
  call void @llvm.lifetime.end.p0(i64 1, ptr %8) #2
  br label %33

33:                                               ; preds = %15
  %34 = load i32, ptr %7, align 4, !tbaa !9
  %35 = add nsw i32 %34, 2
  store i32 %35, ptr %7, align 4, !tbaa !9
  br label %10, !llvm.loop !12

36:                                               ; preds = %14
  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 = !{!7, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


; 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 nounwind uwtable
declare dso_local noundef signext i8 @_Z11parseNibblec(i8 noundef signext) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z7hex2binPKciPc(ptr nocapture noundef readonly %0, i32 noundef %1, ptr nocapture noundef writeonly %2) local_unnamed_addr #0 {
  %4 = icmp sgt i32 %1, 0
  br i1 %4, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %3
  ret void

.lr.ph:                                           ; preds = %3, %.lr.ph
  %.011 = phi ptr [ %8, %.lr.ph ], [ %0, %3 ]
  %.0710 = phi ptr [ %13, %.lr.ph ], [ %2, %3 ]
  %.089 = phi i32 [ %14, %.lr.ph ], [ 0, %3 ]
  %5 = getelementptr inbounds i8, ptr %.011, i64 1
  %6 = load i8, ptr %.011, align 1, !tbaa !5
  %7 = tail call noundef signext i8 @_Z11parseNibblec(i8 noundef signext %6)
  %8 = getelementptr inbounds i8, ptr %.011, i64 2
  %9 = load i8, ptr %5, align 1, !tbaa !5
  %10 = tail call noundef signext i8 @_Z11parseNibblec(i8 noundef signext %9)
  %11 = shl i8 %7, 4
  %12 = or i8 %10, %11
  %13 = getelementptr inbounds i8, ptr %.0710, i64 1
  store i8 %12, ptr %.0710, align 1, !tbaa !5
  %14 = add nuw nsw i32 %.089, 2
  %15 = icmp slt i32 %14, %1
  br i1 %15, label %.lr.ph, label %._crit_edge, !llvm.loop !8
}

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" }

!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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = distinct !{!8, !9}
!9 = !{!"llvm.loop.mustprogress"}


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