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

; 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 [42 x i8], align 1
@running = external hidden global i32, align 4
@.str.1 = external hidden unnamed_addr constant [23 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [8 x i8], align 1
@stdout = external global ptr, align 8
@.str.5 = 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
  store i32 0, ptr %1, align 4
  %2 = call i32 @rc_encoder_pru_init()
  %3 = icmp ne i32 %2, 0
  br i1 %3, label %4, label %7

4:                                                ; preds = %0
  %5 = load ptr, ptr @stderr, align 8, !tbaa !5
  %6 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %5, ptr noundef @.str) #3
  store i32 -1, ptr %1, align 4
  br label %22

7:                                                ; preds = %0
  %8 = call ptr @signal(i32 noundef 2, ptr noundef @__signal_handler) #3
  store i32 1, ptr @running, align 4, !tbaa !9
  %9 = call i32 (ptr, ...) @printf(ptr noundef @.str.1)
  %10 = call i32 (ptr, ...) @printf(ptr noundef @.str.2)
  %11 = call i32 (ptr, ...) @printf(ptr noundef @.str.3)
  br label %12

12:                                               ; preds = %15, %7
  %13 = load i32, ptr @running, align 4, !tbaa !9
  %14 = icmp ne i32 %13, 0
  br i1 %14, label %15, label %20

15:                                               ; preds = %12
  %16 = call i32 @rc_encoder_pru_read()
  %17 = call i32 (ptr, ...) @printf(ptr noundef @.str.4, i32 noundef %16)
  %18 = load ptr, ptr @stdout, align 8, !tbaa !5
  %19 = call i32 @fflush(ptr noundef %18)
  call void @rc_usleep(i32 noundef 50000)
  br label %12, !llvm.loop !11

20:                                               ; preds = %12
  %21 = call i32 (ptr, ...) @printf(ptr noundef @.str.5)
  call void @rc_encoder_pru_cleanup()
  store i32 0, ptr %1, align 4
  br label %22

22:                                               ; preds = %20, %4
  %23 = load i32, ptr %1, align 4
  ret i32 %23
}

declare i32 @rc_encoder_pru_init() #1

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

; Function Attrs: nounwind
declare ptr @signal(i32 noundef, ptr noundef) #2

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

declare i32 @printf(ptr noundef, ...) #1

declare i32 @rc_encoder_pru_read() #1

declare i32 @fflush(ptr noundef) #1

declare void @rc_usleep(i32 noundef) #1

declare void @rc_encoder_pru_cleanup() #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 "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/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !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"

@stderr = external local_unnamed_addr global ptr, align 8
@.str = external hidden unnamed_addr constant [42 x i8], align 1
@running = external hidden local_unnamed_addr global i32, align 4
@.str.1 = external hidden unnamed_addr constant [23 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [8 x i8], align 1
@stdout = external local_unnamed_addr global ptr, align 8
@.str.5 = 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_pru_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 %17

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 = load i32, ptr @running, align 4, !tbaa !9
  %.not12 = icmp eq i32 %10, 0
  br i1 %.not12, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %5, %.lr.ph
  %11 = tail call i32 @rc_encoder_pru_read() #4
  %12 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.4, i32 noundef %11)
  %13 = load ptr, ptr @stdout, align 8, !tbaa !5
  %14 = tail call i32 @fflush(ptr noundef %13)
  tail call void @rc_usleep(i32 noundef 50000) #4
  %15 = load i32, ptr @running, align 4, !tbaa !9
  %.not1 = icmp eq i32 %15, 0
  br i1 %.not1, label %._crit_edge, label %.lr.ph, !llvm.loop !11

._crit_edge:                                      ; preds = %.lr.ph, %5
  %16 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.5)
  tail call void @rc_encoder_pru_cleanup() #4
  br label %17

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

declare i32 @rc_encoder_pru_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_pru_read() 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 void @rc_encoder_pru_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: GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass