; LLVM IR from BrunoLevy/learn-fpga :: FemtoRV/FIRMWARE/TOOLS/FONT (make_font8x16)

; 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.5 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [57 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [7 x i8], align 1
@.str.8 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.9 = external hidden unnamed_addr constant [23 x i8], align 1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

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

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
declare dso_local void @printh(i32 noundef) #2

; Function Attrs: nounwind uwtable
declare dso_local i32 @get_font_column(i32 noundef, i32 noundef) #2

; Function Attrs: nounwind uwtable
define dso_local i32 @main() #2 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  %5 = call i32 (ptr, ...) @printf(ptr noundef @.str.6)
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #3
  store i32 0, ptr %2, align 4, !tbaa !5
  br label %6

6:                                                ; preds = %31, %0
  %7 = load i32, ptr %2, align 4, !tbaa !5
  %8 = icmp slt i32 %7, 255
  br i1 %8, label %10, label %9

9:                                                ; preds = %6
  store i32 2, ptr %3, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #3
  br label %34

10:                                               ; preds = %6
  %11 = call i32 (ptr, ...) @printf(ptr noundef @.str.7)
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  store i32 0, ptr %4, align 4, !tbaa !5
  br label %12

12:                                               ; preds = %27, %10
  %13 = load i32, ptr %4, align 4, !tbaa !5
  %14 = icmp slt i32 %13, 8
  br i1 %14, label %16, label %15

15:                                               ; preds = %12
  store i32 5, ptr %3, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  br label %30

16:                                               ; preds = %12
  %17 = load i32, ptr %2, align 4, !tbaa !5
  %18 = load i32, ptr %4, align 4, !tbaa !5
  %19 = call i32 @get_font_column(i32 noundef %17, i32 noundef %18)
  call void @printh(i32 noundef %19)
  %20 = load i32, ptr %4, align 4, !tbaa !5
  %21 = icmp slt i32 %20, 7
  br i1 %21, label %22, label %24

22:                                               ; preds = %16
  %23 = call i32 (ptr, ...) @printf(ptr noundef @.str.8)
  br label %26

24:                                               ; preds = %16
  %25 = call i32 (ptr, ...) @printf(ptr noundef @.str.5)
  br label %26

26:                                               ; preds = %24, %22
  br label %27

27:                                               ; preds = %26
  %28 = load i32, ptr %4, align 4, !tbaa !5
  %29 = add nsw i32 %28, 1
  store i32 %29, ptr %4, align 4, !tbaa !5
  br label %12, !llvm.loop !9

30:                                               ; preds = %15
  br label %31

31:                                               ; preds = %30
  %32 = load i32, ptr %2, align 4, !tbaa !5
  %33 = add nsw i32 %32, 1
  store i32 %33, ptr %2, align 4, !tbaa !5
  br label %6, !llvm.loop !11

34:                                               ; preds = %9
  %35 = call i32 (ptr, ...) @printf(ptr noundef @.str.9)
  %36 = load i32, ptr %1, align 4
  ret i32 %36
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 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 #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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}


; 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.5 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [57 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [7 x i8], align 1
@.str.8 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.9 = external hidden unnamed_addr constant [23 x i8], align 1

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

; Function Attrs: nounwind uwtable
declare dso_local void @printh(i32 noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
declare dso_local i32 @get_font_column(i32 noundef, i32 noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #1 {
  %1 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.6)
  br label %4

2:                                                ; preds = %4
  %3 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.9)
  ret i32 0

4:                                                ; preds = %0, %4
  %.0810 = phi i32 [ 0, %0 ], [ %22, %4 ]
  %5 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.7)
  %6 = tail call i32 @get_font_column(i32 noundef %.0810, i32 noundef 0)
  tail call void @printh(i32 noundef %6)
  %7 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.8)
  %8 = tail call i32 @get_font_column(i32 noundef %.0810, i32 noundef 1)
  tail call void @printh(i32 noundef %8)
  %9 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.8)
  %10 = tail call i32 @get_font_column(i32 noundef %.0810, i32 noundef 2)
  tail call void @printh(i32 noundef %10)
  %11 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.8)
  %12 = tail call i32 @get_font_column(i32 noundef %.0810, i32 noundef 3)
  tail call void @printh(i32 noundef %12)
  %13 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.8)
  %14 = tail call i32 @get_font_column(i32 noundef %.0810, i32 noundef 4)
  tail call void @printh(i32 noundef %14)
  %15 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.8)
  %16 = tail call i32 @get_font_column(i32 noundef %.0810, i32 noundef 5)
  tail call void @printh(i32 noundef %16)
  %17 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.8)
  %18 = tail call i32 @get_font_column(i32 noundef %.0810, i32 noundef 6)
  tail call void @printh(i32 noundef %18)
  %19 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.8)
  %20 = tail call i32 @get_font_column(i32 noundef %.0810, i32 noundef 7)
  tail call void @printh(i32 noundef %20)
  %21 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.5)
  %22 = add nuw nsw i32 %.0810, 1
  %exitcond.not = icmp eq i32 %22, 255
  br i1 %exitcond.not, label %2, label %4, !llvm.loop !5
}

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 = { 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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,PostOrderFunctionAttrsPass,SCCPPass,SROAPass,SimplifyCFGPass,TailCallElimPass