; LLVM IR from sskorol/respeaker-websockets :: src (cAPA102)

; 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"

%struct.cAPA102_LEDs = type { i32, i32, ptr, i8 }

@cAPA012_BUF = external hidden global %struct.cAPA102_LEDs, align 8

; Function Attrs: nounwind uwtable
declare dso_local void @cAPA102_Clear_All() #0

; Function Attrs: nounwind
declare void @free(ptr noundef) #1

; Function Attrs: nounwind uwtable
define dso_local void @cAPA102_Close() #0 {
  call void @cAPA102_Clear_All()
  %1 = load i32, ptr getelementptr inbounds (%struct.cAPA102_LEDs, ptr @cAPA012_BUF, i32 0, i32 1), align 4, !tbaa !5
  %2 = icmp ne i32 %1, -1
  br i1 %2, label %3, label %6

3:                                                ; preds = %0
  %4 = load i32, ptr getelementptr inbounds (%struct.cAPA102_LEDs, ptr @cAPA012_BUF, i32 0, i32 1), align 4, !tbaa !5
  %5 = call i32 @close(i32 noundef %4)
  br label %6

6:                                                ; preds = %3, %0
  %7 = load ptr, ptr getelementptr inbounds (%struct.cAPA102_LEDs, ptr @cAPA012_BUF, i32 0, i32 2), align 8, !tbaa !11
  %8 = icmp ne ptr %7, null
  br i1 %8, label %9, label %11

9:                                                ; preds = %6
  %10 = load ptr, ptr getelementptr inbounds (%struct.cAPA102_LEDs, ptr @cAPA012_BUF, i32 0, i32 2), align 8, !tbaa !11
  call void @free(ptr noundef %10) #3
  br label %11

11:                                               ; preds = %9, %6
  ret void
}

declare i32 @close(i32 noundef) #2

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 = { nounwind "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, !7, i64 4}
!6 = !{!"", !7, i64 0, !7, i64 4, !10, i64 8, !8, i64 16}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !10, i64 8}


; 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"

%struct.cAPA102_LEDs = type { i32, i32, ptr, i8 }

@cAPA012_BUF = external hidden local_unnamed_addr global %struct.cAPA102_LEDs, align 8

; Function Attrs: nounwind uwtable
declare dso_local void @cAPA102_Clear_All() local_unnamed_addr #0

; Function Attrs: mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite)
declare void @free(ptr allocptr nocapture noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local void @cAPA102_Close() local_unnamed_addr #0 {
  tail call void @cAPA102_Clear_All()
  %1 = load i32, ptr getelementptr inbounds (i8, ptr @cAPA012_BUF, i64 4), align 4, !tbaa !5
  %.not = icmp eq i32 %1, -1
  br i1 %.not, label %4, label %2

2:                                                ; preds = %0
  %3 = tail call i32 @close(i32 noundef %1) #3
  br label %4

4:                                                ; preds = %2, %0
  %5 = load ptr, ptr getelementptr inbounds (i8, ptr @cAPA012_BUF, i64 8), align 8, !tbaa !11
  %.not2 = icmp eq ptr %5, null
  br i1 %.not2, label %7, label %6

6:                                                ; preds = %4
  tail call void @free(ptr noundef nonnull %5) #3
  br label %7

7:                                                ; preds = %6, %4
  ret void
}

declare i32 @close(i32 noundef) local_unnamed_addr #2

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 = { mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite) "alloc-family"="malloc" "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, !7, i64 4}
!6 = !{!"", !7, i64 0, !7, i64 4, !10, i64 8, !8, i64 16}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !10, i64 8}


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