; LLVM IR from modlfo/AudioEngine :: AudioEngine/JuceLibraryCode/juce_audio_basics.ll (ZN4juce11MidiMessage10setChannelEi)

; 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: inlinehint mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZNK4juce11MidiMessage7getDataEv(ptr noundef nonnull align 8 dereferenceable(20)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN4juce11MidiMessage10setChannelEi(ptr noundef nonnull align 8 dereferenceable(20) %0, i32 noundef %1) #2 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  %6 = load ptr, ptr %3, align 8
  br label %7

7:                                                ; preds = %2
  br label %8

8:                                                ; preds = %7
  br label %9

9:                                                ; preds = %8
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  %10 = call noundef ptr @_ZNK4juce11MidiMessage7getDataEv(ptr noundef nonnull align 8 dereferenceable(20) %6) #3
  store ptr %10, ptr %5, align 8, !tbaa !5
  %11 = load ptr, ptr %5, align 8, !tbaa !5
  %12 = getelementptr inbounds i8, ptr %11, i64 0
  %13 = load i8, ptr %12, align 1, !tbaa !11
  %14 = zext i8 %13 to i32
  %15 = and i32 %14, 240
  %16 = icmp ne i32 %15, 240
  br i1 %16, label %17, label %31

17:                                               ; preds = %9
  %18 = load ptr, ptr %5, align 8, !tbaa !5
  %19 = getelementptr inbounds i8, ptr %18, i64 0
  %20 = load i8, ptr %19, align 1, !tbaa !11
  %21 = zext i8 %20 to i32
  %22 = and i32 %21, 240
  %23 = load i32, ptr %4, align 4, !tbaa !9
  %24 = sub nsw i32 %23, 1
  %25 = trunc i32 %24 to i8
  %26 = zext i8 %25 to i32
  %27 = or i32 %22, %26
  %28 = trunc i32 %27 to i8
  %29 = load ptr, ptr %5, align 8, !tbaa !5
  %30 = getelementptr inbounds i8, ptr %29, i64 0
  store i8 %28, ptr %30, align 1, !tbaa !11
  br label %31

31:                                               ; preds = %17, %9
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { inlinehint 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 #2 = { 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 #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 = !{!"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}


; 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: inlinehint mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZNK4juce11MidiMessage7getDataEv(ptr noundef nonnull align 8 dereferenceable(20)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN4juce11MidiMessage10setChannelEi(ptr noundef nonnull align 8 dereferenceable(20) %0, i32 noundef %1) local_unnamed_addr #1 align 2 {
  %3 = tail call noundef ptr @_ZNK4juce11MidiMessage7getDataEv(ptr noundef nonnull align 8 dereferenceable(20) %0) #2
  %4 = load i8, ptr %3, align 1, !tbaa !5
  %.not = icmp ugt i8 %4, -17
  br i1 %.not, label %10, label %5

5:                                                ; preds = %2
  %6 = and i8 %4, -16
  %7 = trunc i32 %1 to i8
  %8 = add i8 %7, -1
  %9 = or i8 %6, %8
  store i8 %9, ptr %3, align 1, !tbaa !5
  br label %10

10:                                               ; preds = %5, %2
  ret void
}

attributes #0 = { inlinehint 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 = { 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 #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++ TBAA"}


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