; LLVM IR from devicehive/esp8266-firmware :: firmware-src/sources (dhutils)

; 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
define dso_local i32 @byteToHex(i8 noundef zeroext %0, ptr noundef %1) #1 {
  %3 = alloca i8, align 1
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  store i8 %0, ptr %3, align 1, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !8
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  %7 = load i8, ptr %3, align 1, !tbaa !5
  %8 = zext i8 %7 to i32
  %9 = ashr i32 %8, 4
  %10 = and i32 %9, 15
  store i32 %10, ptr %5, align 4, !tbaa !10
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  %11 = load i8, ptr %3, align 1, !tbaa !5
  %12 = zext i8 %11 to i32
  %13 = and i32 %12, 15
  store i32 %13, ptr %6, align 4, !tbaa !10
  %14 = load i32, ptr %5, align 4, !tbaa !10
  %15 = icmp slt i32 %14, 10
  br i1 %15, label %16, label %19

16:                                               ; preds = %2
  %17 = load i32, ptr %5, align 4, !tbaa !10
  %18 = add nsw i32 %17, 48
  br label %23

19:                                               ; preds = %2
  %20 = load i32, ptr %5, align 4, !tbaa !10
  %21 = sub nsw i32 %20, 10
  %22 = add nsw i32 %21, 65
  br label %23

23:                                               ; preds = %19, %16
  %24 = phi i32 [ %18, %16 ], [ %22, %19 ]
  %25 = trunc i32 %24 to i8
  %26 = load ptr, ptr %4, align 8, !tbaa !8
  %27 = getelementptr inbounds i8, ptr %26, i64 0
  store i8 %25, ptr %27, align 1, !tbaa !5
  %28 = load i32, ptr %6, align 4, !tbaa !10
  %29 = icmp slt i32 %28, 10
  br i1 %29, label %30, label %33

30:                                               ; preds = %23
  %31 = load i32, ptr %6, align 4, !tbaa !10
  %32 = add nsw i32 %31, 48
  br label %37

33:                                               ; preds = %23
  %34 = load i32, ptr %6, align 4, !tbaa !10
  %35 = sub nsw i32 %34, 10
  %36 = add nsw i32 %35, 65
  br label %37

37:                                               ; preds = %33, %30
  %38 = phi i32 [ %32, %30 ], [ %36, %33 ]
  %39 = trunc i32 %38 to i8
  %40 = load ptr, ptr %4, align 8, !tbaa !8
  %41 = getelementptr inbounds i8, ptr %40, i64 1
  store i8 %39, ptr %41, align 1, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  ret i32 2
}

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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C/C++ TBAA"}
!8 = !{!9, !9, i64 0}
!9 = !{!"any pointer", !6, i64 0}
!10 = !{!11, !11, i64 0}
!11 = !{!"int", !6, 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: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: write) uwtable
define dso_local noundef i32 @byteToHex(i8 noundef zeroext %0, ptr nocapture noundef writeonly %1) local_unnamed_addr #0 {
  %3 = lshr i8 %0, 4
  %4 = and i8 %0, 15
  %5 = icmp ult i8 %0, -96
  %6 = or disjoint i8 %3, 48
  %7 = add nuw nsw i8 %3, 55
  %8 = select i1 %5, i8 %6, i8 %7
  store i8 %8, ptr %1, align 1, !tbaa !5
  %9 = icmp ult i8 %4, 10
  %10 = or disjoint i8 %4, 48
  %11 = add nuw nsw i8 %4, 55
  %12 = select i1 %9, i8 %10, i8 %11
  %13 = getelementptr inbounds i8, ptr %1, i64 1
  store i8 %12, ptr %13, align 1, !tbaa !5
  ret i32 2
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: write) 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/C++ TBAA"}


; Effective O3 passes: AggressiveInstCombinePass,EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass