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

; 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"

@.str = external hidden unnamed_addr constant [12 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [54 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [53 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [15 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [16 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [22 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [23 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  %4 = alloca [32 x i8], align 16
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #4
  store ptr @.str, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #4
  %7 = load ptr, ptr %2, align 8, !tbaa !5
  %8 = call i64 @strlen(ptr noundef %7) #5
  %9 = add i64 %8, 1
  %10 = trunc i64 %9 to i32
  store i32 %10, ptr %3, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 32, ptr %4) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #4
  %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 @rc_spi_init_auto_slave(i32 noundef 1, i32 noundef 0, i32 noundef 0, i32 noundef 24000000)
  %15 = icmp ne i32 %14, 0
  br i1 %15, label %16, label %17

16:                                               ; preds = %0
  store i32 -1, ptr %1, align 4
  store i32 1, ptr %6, align 4
  br label %38

17:                                               ; preds = %0
  %18 = call i32 (ptr, ...) @printf(ptr noundef @.str.4)
  %19 = load i32, ptr %3, align 4, !tbaa !9
  %20 = load ptr, ptr %2, align 8, !tbaa !5
  %21 = call i32 (ptr, ...) @printf(ptr noundef @.str.5, i32 noundef %19, ptr noundef %20)
  %22 = load ptr, ptr %2, align 8, !tbaa !5
  %23 = load i32, ptr %3, align 4, !tbaa !9
  %24 = sext i32 %23 to i64
  %25 = getelementptr inbounds [32 x i8], ptr %4, i64 0, i64 0
  %26 = call i32 @rc_spi_transfer(i32 noundef 1, i32 noundef 0, ptr noundef %22, i64 noundef %24, ptr noundef %25)
  store i32 %26, ptr %5, align 4, !tbaa !9
  %27 = load i32, ptr %5, align 4, !tbaa !9
  %28 = icmp slt i32 %27, 0
  br i1 %28, label %29, label %32

29:                                               ; preds = %17
  %30 = call i32 (ptr, ...) @printf(ptr noundef @.str.6)
  %31 = call i32 @rc_spi_close(i32 noundef 0)
  store i32 -1, ptr %1, align 4
  store i32 1, ptr %6, align 4
  br label %38

32:                                               ; preds = %17
  %33 = load i32, ptr %5, align 4, !tbaa !9
  %34 = getelementptr inbounds [32 x i8], ptr %4, i64 0, i64 0
  %35 = call i32 (ptr, ...) @printf(ptr noundef @.str.7, i32 noundef %33, ptr noundef %34)
  br label %36

36:                                               ; preds = %32
  %37 = call i32 @rc_spi_close(i32 noundef 1)
  store i32 0, ptr %1, align 4
  store i32 1, ptr %6, align 4
  br label %38

38:                                               ; preds = %36, %29, %16
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #4
  call void @llvm.lifetime.end.p0(i64 32, ptr %4) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #4
  call void @llvm.lifetime.end.p0(i64 8, 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

; Function Attrs: nounwind willreturn memory(read)
declare i64 @strlen(ptr noundef) #2

declare i32 @printf(ptr noundef, ...) #3

declare i32 @rc_spi_init_auto_slave(i32 noundef, i32 noundef, i32 noundef, i32 noundef) #3

declare i32 @rc_spi_transfer(i32 noundef, i32 noundef, ptr noundef, i64 noundef, ptr noundef) #3

declare i32 @rc_spi_close(i32 noundef) #3

; 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 = { nounwind willreturn memory(read) "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 = { "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 = { nounwind willreturn memory(read) }

!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}


; 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"

@.str = external hidden unnamed_addr constant [12 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [54 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [53 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [15 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [16 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [22 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [23 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local range(i32 -1, 1) i32 @main() local_unnamed_addr #0 {
  %1 = alloca [32 x i8], align 16
  %2 = tail call i64 @strlen(ptr noundef nonnull dereferenceable(1) @.str) #5
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %1) #6
  %3 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1)
  %4 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2)
  %5 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3)
  %6 = tail call i32 @rc_spi_init_auto_slave(i32 noundef 1, i32 noundef 0, i32 noundef 0, i32 noundef 24000000) #6
  %.not = icmp eq i32 %6, 0
  br i1 %.not, label %7, label %20

7:                                                ; preds = %0
  %8 = trunc i64 %2 to i32
  %9 = add i32 %8, 1
  %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, i32 noundef %9, ptr noundef nonnull @.str)
  %12 = sext i32 %9 to i64
  %13 = call i32 @rc_spi_transfer(i32 noundef 1, i32 noundef 0, ptr noundef nonnull @.str, i64 noundef %12, ptr noundef nonnull %1) #6
  %14 = icmp slt i32 %13, 0
  br i1 %14, label %15, label %17

15:                                               ; preds = %7
  %16 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.6)
  br label %.sink.split

17:                                               ; preds = %7
  %18 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.7, i32 noundef %13, ptr noundef nonnull %1)
  br label %.sink.split

.sink.split:                                      ; preds = %15, %17
  %.sink = phi i32 [ 1, %17 ], [ 0, %15 ]
  %.0.ph = phi i32 [ 0, %17 ], [ -1, %15 ]
  %19 = call i32 @rc_spi_close(i32 noundef %.sink) #6
  br label %20

20:                                               ; preds = %.sink.split, %0
  %.0 = phi i32 [ -1, %0 ], [ %.0.ph, %.sink.split ]
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %1) #6
  ret i32 %.0
}

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

; Function Attrs: mustprogress nofree nounwind willreturn memory(argmem: read)
declare i64 @strlen(ptr nocapture noundef) local_unnamed_addr #2

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #3

declare i32 @rc_spi_init_auto_slave(i32 noundef, i32 noundef, i32 noundef, i32 noundef) local_unnamed_addr #4

declare i32 @rc_spi_transfer(i32 noundef, i32 noundef, ptr noundef, i64 noundef, ptr noundef) local_unnamed_addr #4

declare i32 @rc_spi_close(i32 noundef) local_unnamed_addr #4

; Function Attrs: mustprogress 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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { mustprogress nofree nounwind willreturn memory(argmem: read) "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 = { 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 #4 = { "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 #5 = { nounwind willreturn memory(read) }
attributes #6 = { 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)"}


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