; LLVM IR from lfarcaro/ARINC653_ARMV7A_AM335X :: Hardware (phy)

; 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

declare i32 @MDIOPhyRegRead(i32 noundef, i32 noundef, i32 noundef, ptr noundef) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

declare void @MDIOPhyRegWrite(i32 noundef, i32 noundef, i32 noundef, i16 noundef zeroext) #1

; Function Attrs: nounwind uwtable
define dso_local i32 @PhyReset(i32 noundef %0, i32 noundef %1) #2 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i16, align 2
  %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 2, ptr %6) #3
  store i16 -32768, ptr %6, align 2, !tbaa !9
  %8 = load i32, ptr %4, align 4, !tbaa !5
  %9 = load i32, ptr %5, align 4, !tbaa !5
  %10 = load i16, ptr %6, align 2, !tbaa !9
  call void @MDIOPhyRegWrite(i32 noundef %8, i32 noundef %9, i32 noundef 0, i16 noundef zeroext %10)
  br label %11

11:                                               ; preds = %22, %2
  %12 = load i16, ptr %6, align 2, !tbaa !9
  %13 = zext i16 %12 to i32
  %14 = and i32 %13, 32768
  %15 = icmp ne i32 %14, 0
  br i1 %15, label %16, label %23

16:                                               ; preds = %11
  %17 = load i32, ptr %4, align 4, !tbaa !5
  %18 = load i32, ptr %5, align 4, !tbaa !5
  %19 = call i32 @MDIOPhyRegRead(i32 noundef %17, i32 noundef %18, i32 noundef 0, ptr noundef %6)
  %20 = icmp ne i32 %19, 1
  br i1 %20, label %21, label %22

21:                                               ; preds = %16
  store i32 0, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %24

22:                                               ; preds = %16
  br label %11, !llvm.loop !11

23:                                               ; preds = %11
  store i32 1, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %24

24:                                               ; preds = %23, %21
  call void @llvm.lifetime.end.p0(i64 2, ptr %6) #3
  %25 = load i32, ptr %3, align 4
  ret i32 %25
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 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 #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"}
!9 = !{!10, !10, i64 0}
!10 = !{!"short", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"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 nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

declare i32 @MDIOPhyRegRead(i32 noundef, i32 noundef, i32 noundef, ptr noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

declare void @MDIOPhyRegWrite(i32 noundef, i32 noundef, i32 noundef, i16 noundef zeroext) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local range(i32 0, 2) i32 @PhyReset(i32 noundef %0, i32 noundef %1) local_unnamed_addr #2 {
  %3 = alloca i16, align 2
  call void @llvm.lifetime.start.p0(i64 2, ptr nonnull %3) #3
  store i16 -32768, ptr %3, align 2, !tbaa !5
  tail call void @MDIOPhyRegWrite(i32 noundef %0, i32 noundef %1, i32 noundef 0, i16 noundef zeroext -32768) #3
  br label %4

thread-pre-split:                                 ; preds = %4
  %.pr = load i16, ptr %3, align 2, !tbaa !5
  %.not = icmp sgt i16 %.pr, -1
  br i1 %.not, label %6, label %4

4:                                                ; preds = %2, %thread-pre-split
  %5 = call i32 @MDIOPhyRegRead(i32 noundef %0, i32 noundef %1, i32 noundef 0, ptr noundef nonnull %3) #3
  %.not5 = icmp eq i32 %5, 1
  br i1 %.not5, label %thread-pre-split, label %6, !llvm.loop !9

6:                                                ; preds = %thread-pre-split, %4
  %.0 = phi i32 [ 0, %4 ], [ 1, %thread-pre-split ]
  call void @llvm.lifetime.end.p0(i64 2, ptr nonnull %3) #3
  ret i32 %.0
}

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 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 #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 = !{!"short", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


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