; LLVM IR from beagleboard/librobotcontrol :: library/src/pru (encoder_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"

@shared_mem_32bit_ptr = external hidden global ptr, align 8
@stderr = external global ptr, align 8
@init_flag = external hidden global i32, align 4
@.str.6 = external hidden unnamed_addr constant [63 x i8], align 1

; Function Attrs: nounwind
declare i32 @fprintf(ptr noundef, ptr noundef, ...) #0

; Function Attrs: nounwind uwtable
define dso_local i32 @rc_encoder_pru_write(i32 noundef %0) #1 {
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  store i32 %0, ptr %3, align 4, !tbaa !5
  %4 = load ptr, ptr @shared_mem_32bit_ptr, align 8, !tbaa !9
  %5 = icmp eq ptr %4, null
  br i1 %5, label %9, label %6

6:                                                ; preds = %1
  %7 = load i32, ptr @init_flag, align 4, !tbaa !5
  %8 = icmp eq i32 %7, 0
  br i1 %8, label %9, label %12

9:                                                ; preds = %6, %1
  %10 = load ptr, ptr @stderr, align 8, !tbaa !9
  %11 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %10, ptr noundef @.str.6) #2
  store i32 -1, ptr %2, align 4
  br label %16

12:                                               ; preds = %6
  %13 = load i32, ptr %3, align 4, !tbaa !5
  %14 = load ptr, ptr @shared_mem_32bit_ptr, align 8, !tbaa !9
  %15 = getelementptr inbounds i32, ptr %14, i64 16
  store volatile i32 %13, ptr %15, align 4, !tbaa !5
  store i32 0, ptr %2, align 4
  br label %16

16:                                               ; preds = %12, %9
  %17 = load i32, ptr %2, align 4
  ret i32 %17
}

attributes #0 = { 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 #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 = { 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 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !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"

@shared_mem_32bit_ptr = external hidden local_unnamed_addr global ptr, align 8
@stderr = external local_unnamed_addr global ptr, align 8
@init_flag = external hidden local_unnamed_addr global i32, align 4
@.str.6 = external hidden unnamed_addr constant [63 x i8], align 1

; Function Attrs: nofree nounwind
declare noundef i32 @fprintf(ptr nocapture noundef, ptr nocapture noundef readonly, ...) local_unnamed_addr #0

; Function Attrs: nofree nounwind uwtable
define dso_local range(i32 -1, 1) i32 @rc_encoder_pru_write(i32 noundef %0) local_unnamed_addr #1 {
  %2 = load ptr, ptr @shared_mem_32bit_ptr, align 8, !tbaa !5
  %3 = icmp eq ptr %2, null
  %4 = load i32, ptr @init_flag, align 4
  %5 = icmp eq i32 %4, 0
  %or.cond = select i1 %3, i1 true, i1 %5
  br i1 %or.cond, label %6, label %9

6:                                                ; preds = %1
  %7 = load ptr, ptr @stderr, align 8, !tbaa !5
  %8 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %7, ptr noundef nonnull @.str.6) #2
  br label %11

9:                                                ; preds = %1
  %10 = getelementptr inbounds i8, ptr %2, i64 64
  store volatile i32 %0, ptr %10, align 4, !tbaa !9
  br label %11

11:                                               ; preds = %9, %6
  %.0 = phi i32 [ -1, %6 ], [ 0, %9 ]
  ret i32 %.0
}

attributes #0 = { 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 #1 = { nofree 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 = { 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}


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