; LLVM IR from BrunoLevy/learn-fpga :: FemtoRV/FIRMWARE/LIBFEMTOGL (femtoGLtext)

; 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.GLFont = type { ptr, i8, i8 }

@Font5x6 = external dso_local constant %struct.GLFont, align 8
@cursor_X = external hidden global i32, align 4
@cursor_Y = external hidden global i32, align 4
@scrolling = external hidden global i32, align 4
@display_start_line = external hidden global i32, align 4

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

; Function Attrs: nounwind uwtable
define dso_local void @GL_tty_init(i32 noundef %0) #0 {
  %2 = alloca i32, align 4
  store i32 %0, ptr %2, align 4, !tbaa !5
  %3 = load i32, ptr %2, align 4, !tbaa !5
  call void @GL_init(i32 noundef %3)
  call void (...) @GL_clear()
  call void @set_putcharfunc(ptr noundef @GL_putchar)
  store i32 0, ptr @cursor_X, align 4, !tbaa !5
  store i32 0, ptr @cursor_Y, align 4, !tbaa !5
  store i32 0, ptr @scrolling, align 4, !tbaa !5
  store i32 0, ptr @display_start_line, align 4, !tbaa !5
  call void @oled1(i32 noundef 161, i32 noundef 0)
  store volatile i32 4, ptr inttoptr (i64 4198400 to ptr), align 4, !tbaa !5
  call void @GL_set_font(ptr noundef @Font5x6)
  ret void
}

declare void @GL_init(i32 noundef) #1

declare void @GL_clear(...) #1

declare void @set_putcharfunc(ptr noundef) #1

; Function Attrs: nounwind uwtable
declare dso_local i32 @GL_putchar(i32 noundef) #0

declare void @oled1(i32 noundef, i32 noundef) #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 = { "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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}


; 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"

%struct.GLFont = type { ptr, i8, i8 }

@Font5x6 = external dso_local constant %struct.GLFont, align 8
@cursor_X = external hidden local_unnamed_addr global i32, align 4
@cursor_Y = external hidden local_unnamed_addr global i32, align 4
@scrolling = external hidden local_unnamed_addr global i32, align 4
@display_start_line = external hidden local_unnamed_addr global i32, align 4

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

; Function Attrs: nounwind uwtable
define dso_local void @GL_tty_init(i32 noundef %0) local_unnamed_addr #0 {
  tail call void @GL_init(i32 noundef %0) #2
  tail call void (...) @GL_clear() #2
  tail call void @set_putcharfunc(ptr noundef nonnull @GL_putchar) #2
  store i32 0, ptr @cursor_X, align 4, !tbaa !5
  store i32 0, ptr @cursor_Y, align 4, !tbaa !5
  store i32 0, ptr @scrolling, align 4, !tbaa !5
  store i32 0, ptr @display_start_line, align 4, !tbaa !5
  tail call void @oled1(i32 noundef 161, i32 noundef 0) #2
  store volatile i32 4, ptr inttoptr (i64 4198400 to ptr), align 4096, !tbaa !5
  tail call void @GL_set_font(ptr noundef nonnull @Font5x6)
  ret void
}

declare void @GL_init(i32 noundef) local_unnamed_addr #1

declare void @GL_clear(...) local_unnamed_addr #1

declare void @set_putcharfunc(ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
declare dso_local i32 @GL_putchar(i32 noundef) #0

declare void @oled1(i32 noundef, i32 noundef) local_unnamed_addr #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 = { "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"}


; Effective O3 passes: GlobalOptPass,InferAlignmentPass,InstCombinePass,SROAPass,TailCallElimPass