; LLVM IR from BrunoLevy/learn-fpga :: LiteX/software/Doom/mc1-doom/src (hu_lib)

; 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"

%struct.hu_itext_t = type { %struct.hu_textline_t, i32, ptr, i32 }
%struct.hu_textline_t = type { i32, i32, ptr, i32, [81 x i8], i32, i32 }

; Function Attrs: nounwind uwtable
declare dso_local void @HUlib_drawTextLine(ptr noundef, i32 noundef) #0

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

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

; Function Attrs: nounwind uwtable
define dso_local void @HUlib_drawIText(ptr noundef %0) #0 {
  %2 = alloca ptr, align 8
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #2
  %5 = load ptr, ptr %2, align 8, !tbaa !5
  %6 = getelementptr inbounds %struct.hu_itext_t, ptr %5, i32 0, i32 0
  store ptr %6, ptr %3, align 8, !tbaa !5
  %7 = load ptr, ptr %2, align 8, !tbaa !5
  %8 = getelementptr inbounds %struct.hu_itext_t, ptr %7, i32 0, i32 2
  %9 = load ptr, ptr %8, align 8, !tbaa !9
  %10 = load i32, ptr %9, align 4, !tbaa !13
  %11 = icmp ne i32 %10, 0
  br i1 %11, label %13, label %12

12:                                               ; preds = %1
  store i32 1, ptr %4, align 4
  br label %15

13:                                               ; preds = %1
  %14 = load ptr, ptr %3, align 8, !tbaa !5
  call void @HUlib_drawTextLine(ptr noundef %14, i32 noundef 1)
  store i32 0, ptr %4, align 4
  br label %15

15:                                               ; preds = %13, %12
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #2
  %16 = load i32, ptr %4, align 4
  switch i32 %16, label %18 [
    i32 0, label %17
    i32 1, label %17
  ]

17:                                               ; preds = %15, %15
  ret void

18:                                               ; preds = %15
  unreachable
}

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 }

!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, !6, i64 120}
!10 = !{!"", !11, i64 0, !12, i64 112, !6, i64 120, !12, i64 128}
!11 = !{!"", !12, i64 0, !12, i64 4, !6, i64 8, !12, i64 16, !7, i64 20, !12, i64 104, !12, i64 108}
!12 = !{!"int", !7, i64 0}
!13 = !{!12, !12, 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"

; Function Attrs: nounwind uwtable
declare dso_local void @HUlib_drawTextLine(ptr noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @HUlib_drawIText(ptr noundef %0) local_unnamed_addr #0 {
  %2 = getelementptr inbounds i8, ptr %0, i64 120
  %3 = load ptr, ptr %2, align 8, !tbaa !5
  %4 = load i32, ptr %3, align 4, !tbaa !12
  %.not = icmp eq i32 %4, 0
  br i1 %.not, label %6, label %5

5:                                                ; preds = %1
  tail call void @HUlib_drawTextLine(ptr noundef nonnull %0, i32 noundef 1)
  br label %6

6:                                                ; preds = %1, %5
  ret void
}

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" }

!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, !11, i64 120}
!6 = !{!"", !7, i64 0, !8, i64 112, !11, i64 120, !8, i64 128}
!7 = !{!"", !8, i64 0, !8, i64 4, !11, i64 8, !8, i64 16, !9, i64 20, !8, i64 104, !8, i64 108}
!8 = !{!"int", !9, i64 0}
!9 = !{!"omnipotent char", !10, i64 0}
!10 = !{!"Simple C/C++ TBAA"}
!11 = !{!"any pointer", !9, i64 0}
!12 = !{!8, !8, i64 0}


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