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

; 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"

@mIntPins = external hidden global i32, align 4

; 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 @dh_onewire_int(i32 noundef %0, i32 noundef %1) #1 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  %8 = load i32, ptr %5, align 4, !tbaa !5
  %9 = load i32, ptr %4, align 4, !tbaa !5
  %10 = call i32 @dh_gpio_subscribe_extra_int(i32 noundef %8, i32 noundef 0, i32 noundef %9, i32 noundef 0)
  store i32 %10, ptr %6, align 4, !tbaa !5
  %11 = load i32, ptr %6, align 4, !tbaa !5
  %12 = icmp ne i32 %11, 0
  br i1 %12, label %13, label %15

13:                                               ; preds = %2
  %14 = load i32, ptr %6, align 4, !tbaa !5
  store i32 %14, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %23

15:                                               ; preds = %2
  %16 = load i32, ptr %4, align 4, !tbaa !5
  %17 = load i32, ptr @mIntPins, align 4, !tbaa !5
  %18 = or i32 %17, %16
  store i32 %18, ptr @mIntPins, align 4, !tbaa !5
  %19 = load i32, ptr %5, align 4, !tbaa !5
  %20 = xor i32 %19, -1
  %21 = load i32, ptr @mIntPins, align 4, !tbaa !5
  %22 = and i32 %21, %20
  store i32 %22, ptr @mIntPins, align 4, !tbaa !5
  store i32 0, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %23

23:                                               ; preds = %15, %13
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  %24 = load i32, ptr %3, align 4
  ret i32 %24
}

declare i32 @dh_gpio_subscribe_extra_int(i32 noundef, i32 noundef, i32 noundef, i32 noundef) #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 = { "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 #3 = { 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}


; 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"

@mIntPins = external hidden local_unnamed_addr global i32, align 4

; Function Attrs: nounwind uwtable
define dso_local i32 @dh_onewire_int(i32 noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = tail call i32 @dh_gpio_subscribe_extra_int(i32 noundef %1, i32 noundef 0, i32 noundef %0, i32 noundef 0) #2
  %.not = icmp eq i32 %3, 0
  br i1 %.not, label %4, label %9

4:                                                ; preds = %2
  %5 = load i32, ptr @mIntPins, align 4, !tbaa !5
  %6 = or i32 %5, %0
  %7 = xor i32 %1, -1
  %8 = and i32 %6, %7
  store i32 %8, ptr @mIntPins, align 4, !tbaa !5
  br label %9

9:                                                ; preds = %2, %4
  ret i32 %3
}

declare i32 @dh_gpio_subscribe_extra_int(i32 noundef, i32 noundef, i32 noundef, i32 noundef) local_unnamed_addr #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 = { "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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,SROAPass,SimplifyCFGPass,TailCallElimPass