; 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_eraseTextLine(ptr noundef) #0

; Function Attrs: nounwind uwtable
define dso_local void @HUlib_eraseIText(ptr noundef %0) #0 {
  %2 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %3 = load ptr, ptr %2, align 8, !tbaa !5
  %4 = getelementptr inbounds %struct.hu_itext_t, ptr %3, i32 0, i32 3
  %5 = load i32, ptr %4, align 8, !tbaa !9
  %6 = icmp ne i32 %5, 0
  br i1 %6, label %7, label %17

7:                                                ; preds = %1
  %8 = load ptr, ptr %2, align 8, !tbaa !5
  %9 = getelementptr inbounds %struct.hu_itext_t, ptr %8, i32 0, i32 2
  %10 = load ptr, ptr %9, align 8, !tbaa !13
  %11 = load i32, ptr %10, align 4, !tbaa !14
  %12 = icmp ne i32 %11, 0
  br i1 %12, label %17, label %13

13:                                               ; preds = %7
  %14 = load ptr, ptr %2, align 8, !tbaa !5
  %15 = getelementptr inbounds %struct.hu_itext_t, ptr %14, i32 0, i32 0
  %16 = getelementptr inbounds %struct.hu_textline_t, ptr %15, i32 0, i32 6
  store i32 4, ptr %16, align 4, !tbaa !15
  br label %17

17:                                               ; preds = %13, %7, %1
  %18 = load ptr, ptr %2, align 8, !tbaa !5
  %19 = getelementptr inbounds %struct.hu_itext_t, ptr %18, i32 0, i32 0
  call void @HUlib_eraseTextLine(ptr noundef %19)
  %20 = load ptr, ptr %2, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct.hu_itext_t, ptr %20, i32 0, i32 2
  %22 = load ptr, ptr %21, align 8, !tbaa !13
  %23 = load i32, ptr %22, align 4, !tbaa !14
  %24 = load ptr, ptr %2, align 8, !tbaa !5
  %25 = getelementptr inbounds %struct.hu_itext_t, ptr %24, i32 0, i32 3
  store i32 %23, ptr %25, align 8, !tbaa !9
  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, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !12, i64 128}
!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 = !{!10, !6, i64 120}
!14 = !{!12, !12, i64 0}
!15 = !{!10, !12, i64 108}


; 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_eraseTextLine(ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @HUlib_eraseIText(ptr noundef %0) local_unnamed_addr #0 {
  %2 = getelementptr inbounds i8, ptr %0, i64 128
  %3 = load i32, ptr %2, align 8, !tbaa !5
  %.not = icmp eq i32 %3, 0
  br i1 %.not, label %10, label %4

4:                                                ; preds = %1
  %5 = getelementptr inbounds i8, ptr %0, i64 120
  %6 = load ptr, ptr %5, align 8, !tbaa !12
  %7 = load i32, ptr %6, align 4, !tbaa !13
  %.not6 = icmp eq i32 %7, 0
  br i1 %.not6, label %8, label %10

8:                                                ; preds = %4
  %9 = getelementptr inbounds i8, ptr %0, i64 108
  store i32 4, ptr %9, align 4, !tbaa !14
  br label %10

10:                                               ; preds = %8, %4, %1
  tail call void @HUlib_eraseTextLine(ptr noundef nonnull %0)
  %11 = getelementptr inbounds i8, ptr %0, i64 120
  %12 = load ptr, ptr %11, align 8, !tbaa !12
  %13 = load i32, ptr %12, align 4, !tbaa !13
  store i32 %13, ptr %2, align 8, !tbaa !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, !8, i64 128}
!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 = !{!6, !11, i64 120}
!13 = !{!8, !8, i64 0}
!14 = !{!6, !8, i64 108}


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