; LLVM IR from beagleboard/librobotcontrol :: library/src/io (adc)

; 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"

@init_flag = external hidden global i32, align 4
@fd = external hidden global [8 x i32], align 16

; 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 @rc_adc_cleanup() #1 {
  %1 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %1) #3
  store i32 0, ptr %1, align 4, !tbaa !5
  br label %2

2:                                                ; preds = %11, %0
  %3 = load i32, ptr %1, align 4, !tbaa !5
  %4 = icmp slt i32 %3, 8
  br i1 %4, label %5, label %14

5:                                                ; preds = %2
  %6 = load i32, ptr %1, align 4, !tbaa !5
  %7 = sext i32 %6 to i64
  %8 = getelementptr inbounds [8 x i32], ptr @fd, i64 0, i64 %7
  %9 = load i32, ptr %8, align 4, !tbaa !5
  %10 = call i32 @close(i32 noundef %9)
  br label %11

11:                                               ; preds = %5
  %12 = load i32, ptr %1, align 4, !tbaa !5
  %13 = add nsw i32 %12, 1
  store i32 %13, ptr %1, align 4, !tbaa !5
  br label %2, !llvm.loop !9

14:                                               ; preds = %2
  store i32 0, ptr @init_flag, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %1) #3
  ret i32 0
}

declare i32 @close(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"}
!9 = distinct !{!9, !10}
!10 = !{!"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"

@init_flag = external hidden local_unnamed_addr global i32, align 4
@fd = external hidden local_unnamed_addr global [8 x i32], align 16

; Function Attrs: nounwind uwtable
define dso_local noundef i32 @rc_adc_cleanup() local_unnamed_addr #0 {
  %1 = load i32, ptr @fd, align 16, !tbaa !5
  %2 = tail call i32 @close(i32 noundef %1) #2
  %3 = load i32, ptr getelementptr inbounds (i8, ptr @fd, i64 4), align 4, !tbaa !5
  %4 = tail call i32 @close(i32 noundef %3) #2
  %5 = load i32, ptr getelementptr inbounds (i8, ptr @fd, i64 8), align 8, !tbaa !5
  %6 = tail call i32 @close(i32 noundef %5) #2
  %7 = load i32, ptr getelementptr inbounds (i8, ptr @fd, i64 12), align 4, !tbaa !5
  %8 = tail call i32 @close(i32 noundef %7) #2
  %9 = load i32, ptr getelementptr inbounds (i8, ptr @fd, i64 16), align 16, !tbaa !5
  %10 = tail call i32 @close(i32 noundef %9) #2
  %11 = load i32, ptr getelementptr inbounds (i8, ptr @fd, i64 20), align 4, !tbaa !5
  %12 = tail call i32 @close(i32 noundef %11) #2
  %13 = load i32, ptr getelementptr inbounds (i8, ptr @fd, i64 24), align 8, !tbaa !5
  %14 = tail call i32 @close(i32 noundef %13) #2
  %15 = load i32, ptr getelementptr inbounds (i8, ptr @fd, i64 28), align 4, !tbaa !5
  %16 = tail call i32 @close(i32 noundef %15) #2
  store i32 0, ptr @init_flag, align 4, !tbaa !5
  ret i32 0
}

declare i32 @close(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: GVNPass,GlobalOptPass,IndVarSimplifyPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,LoopRotatePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass