; LLVM IR from beagleboard/librobotcontrol :: examples/src (rc_test_encoders)

; 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"

@stderr = external global ptr, align 8
@.str = external hidden unnamed_addr constant [38 x i8], align 1
@running = external hidden global i32, align 4
@.str.1 = external hidden unnamed_addr constant [24 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.8 = external hidden unnamed_addr constant [7 x i8], align 1
@stdout = external global ptr, align 8
@.str.9 = external hidden unnamed_addr constant [2 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #4
  %4 = call i32 @rc_encoder_init()
  %5 = icmp ne i32 %4, 0
  br i1 %5, label %6, label %9

6:                                                ; preds = %0
  %7 = load ptr, ptr @stderr, align 8, !tbaa !5
  %8 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %7, ptr noundef @.str) #4
  store i32 -1, ptr %1, align 4
  store i32 1, ptr %3, align 4
  br label %38

9:                                                ; preds = %0
  %10 = call ptr @signal(i32 noundef 2, ptr noundef @__signal_handler) #4
  store i32 1, ptr @running, align 4, !tbaa !9
  %11 = call i32 (ptr, ...) @printf(ptr noundef @.str.1)
  %12 = call i32 (ptr, ...) @printf(ptr noundef @.str.2)
  %13 = call i32 (ptr, ...) @printf(ptr noundef @.str.3)
  %14 = call i32 (ptr, ...) @printf(ptr noundef @.str.4)
  %15 = call i32 (ptr, ...) @printf(ptr noundef @.str.5)
  %16 = call i32 (ptr, ...) @printf(ptr noundef @.str.6)
  br label %17

17:                                               ; preds = %32, %9
  %18 = load i32, ptr @running, align 4, !tbaa !9
  %19 = icmp ne i32 %18, 0
  br i1 %19, label %20, label %35

20:                                               ; preds = %17
  %21 = call i32 (ptr, ...) @printf(ptr noundef @.str.7)
  store i32 1, ptr %2, align 4, !tbaa !9
  br label %22

22:                                               ; preds = %29, %20
  %23 = load i32, ptr %2, align 4, !tbaa !9
  %24 = icmp sle i32 %23, 4
  br i1 %24, label %25, label %32

25:                                               ; preds = %22
  %26 = load i32, ptr %2, align 4, !tbaa !9
  %27 = call i32 @rc_encoder_read(i32 noundef %26)
  %28 = call i32 (ptr, ...) @printf(ptr noundef @.str.8, i32 noundef %27)
  br label %29

29:                                               ; preds = %25
  %30 = load i32, ptr %2, align 4, !tbaa !9
  %31 = add nsw i32 %30, 1
  store i32 %31, ptr %2, align 4, !tbaa !9
  br label %22, !llvm.loop !11

32:                                               ; preds = %22
  %33 = load ptr, ptr @stdout, align 8, !tbaa !5
  %34 = call i32 @fflush(ptr noundef %33)
  call void @rc_usleep(i32 noundef 50000)
  br label %17, !llvm.loop !13

35:                                               ; preds = %17
  %36 = call i32 (ptr, ...) @printf(ptr noundef @.str.9)
  %37 = call i32 @rc_encoder_cleanup()
  store i32 0, ptr %1, align 4
  store i32 1, ptr %3, align 4
  br label %38

38:                                               ; preds = %35, %6
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #4
  %39 = load i32, ptr %1, align 4
  ret i32 %39
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

declare i32 @rc_encoder_init() #2

; Function Attrs: nounwind
declare i32 @fprintf(ptr noundef, ptr noundef, ...) #3

; Function Attrs: nounwind
declare ptr @signal(i32 noundef, ptr noundef) #3

; Function Attrs: nounwind uwtable
declare hidden void @__signal_handler(i32 noundef) #0

declare i32 @printf(ptr noundef, ...) #2

declare i32 @rc_encoder_read(i32 noundef) #2

declare i32 @fflush(ptr noundef) #2

declare void @rc_usleep(i32 noundef) #2

declare i32 @rc_encoder_cleanup() #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 "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 #4 = { 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/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}


; 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"

@stderr = external local_unnamed_addr global ptr, align 8
@.str = external hidden unnamed_addr constant [38 x i8], align 1
@running = external hidden local_unnamed_addr global i32, align 4
@.str.1 = external hidden unnamed_addr constant [24 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.8 = external hidden unnamed_addr constant [7 x i8], align 1
@stdout = external local_unnamed_addr global ptr, align 8
@.str.9 = external hidden unnamed_addr constant [2 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local range(i32 -1, 1) i32 @main() local_unnamed_addr #0 {
  %1 = tail call i32 @rc_encoder_init() #4
  %.not = icmp eq i32 %1, 0
  br i1 %.not, label %5, label %2

2:                                                ; preds = %0
  %3 = load ptr, ptr @stderr, align 8, !tbaa !5
  %4 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %3, ptr noundef nonnull @.str) #5
  br label %28

5:                                                ; preds = %0
  %6 = tail call ptr @signal(i32 noundef 2, ptr noundef nonnull @__signal_handler) #4
  store i32 1, ptr @running, align 4, !tbaa !9
  %7 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1)
  %8 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2)
  %9 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3)
  %10 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.4)
  %11 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.5)
  %12 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.6)
  %13 = load i32, ptr @running, align 4, !tbaa !9
  %.not57 = icmp eq i32 %13, 0
  br i1 %.not57, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %5, %.lr.ph
  %14 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.7)
  %15 = tail call i32 @rc_encoder_read(i32 noundef 1) #4
  %16 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.8, i32 noundef %15)
  %17 = tail call i32 @rc_encoder_read(i32 noundef 2) #4
  %18 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.8, i32 noundef %17)
  %19 = tail call i32 @rc_encoder_read(i32 noundef 3) #4
  %20 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.8, i32 noundef %19)
  %21 = tail call i32 @rc_encoder_read(i32 noundef 4) #4
  %22 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.8, i32 noundef %21)
  %23 = load ptr, ptr @stdout, align 8, !tbaa !5
  %24 = tail call i32 @fflush(ptr noundef %23)
  tail call void @rc_usleep(i32 noundef 50000) #4
  %25 = load i32, ptr @running, align 4, !tbaa !9
  %.not5 = icmp eq i32 %25, 0
  br i1 %.not5, label %._crit_edge, label %.lr.ph, !llvm.loop !11

._crit_edge:                                      ; preds = %.lr.ph, %5
  %26 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.9)
  %27 = tail call i32 @rc_encoder_cleanup() #4
  br label %28

28:                                               ; preds = %._crit_edge, %2
  %.04 = phi i32 [ -1, %2 ], [ 0, %._crit_edge ]
  ret i32 %.04
}

declare i32 @rc_encoder_init() local_unnamed_addr #1

; Function Attrs: nofree nounwind
declare noundef i32 @fprintf(ptr nocapture noundef, ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: nounwind
declare ptr @signal(i32 noundef, ptr noundef) local_unnamed_addr #3

; Function Attrs: nounwind uwtable
declare hidden void @__signal_handler(i32 noundef) #0

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

declare i32 @rc_encoder_read(i32 noundef) local_unnamed_addr #1

; Function Attrs: nofree nounwind
declare noundef i32 @fflush(ptr nocapture noundef) local_unnamed_addr #2

declare void @rc_usleep(i32 noundef) local_unnamed_addr #1

declare i32 @rc_encoder_cleanup() 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 = { nofree 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 #3 = { 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 #4 = { nounwind }
attributes #5 = { cold 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/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass