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

; 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"

@f_w = external hidden global i32, align 4
@scale_ftom = external hidden global i32, align 4
@f_h = external hidden global i32, align 4
@scale_mtof = external hidden global i32, align 4
@min_scale_mtof = external hidden global i32, align 4
@max_scale_mtof = external hidden global i32, align 4
@leveljuststarted = external hidden global i32, align 4
@f_y = external hidden global i32, align 4
@f_x = external hidden global i32, align 4
@finit_width = external hidden global i32, align 4
@finit_height = external hidden global i32, align 4

declare i32 @FixedDiv(i32 noundef, i32 noundef) #0

; Function Attrs: nounwind uwtable
declare dso_local void @AM_findMinMaxBoundaries() #1

; Function Attrs: nounwind uwtable
declare dso_local void @AM_clearMarks() #1

; Function Attrs: nounwind uwtable
define dso_local void @AM_LevelInit() #1 {
  store i32 0, ptr @leveljuststarted, align 4, !tbaa !5
  store i32 0, ptr @f_y, align 4, !tbaa !5
  store i32 0, ptr @f_x, align 4, !tbaa !5
  %1 = load i32, ptr @finit_width, align 4, !tbaa !5
  store i32 %1, ptr @f_w, align 4, !tbaa !5
  %2 = load i32, ptr @finit_height, align 4, !tbaa !5
  store i32 %2, ptr @f_h, align 4, !tbaa !5
  call void @AM_clearMarks()
  call void @AM_findMinMaxBoundaries()
  %3 = load i32, ptr @min_scale_mtof, align 4, !tbaa !5
  %4 = call i32 @FixedDiv(i32 noundef %3, i32 noundef 45875)
  store i32 %4, ptr @scale_mtof, align 4, !tbaa !5
  %5 = load i32, ptr @scale_mtof, align 4, !tbaa !5
  %6 = load i32, ptr @max_scale_mtof, align 4, !tbaa !5
  %7 = icmp sgt i32 %5, %6
  br i1 %7, label %8, label %10

8:                                                ; preds = %0
  %9 = load i32, ptr @min_scale_mtof, align 4, !tbaa !5
  store i32 %9, ptr @scale_mtof, align 4, !tbaa !5
  br label %10

10:                                               ; preds = %8, %0
  %11 = load i32, ptr @scale_mtof, align 4, !tbaa !5
  %12 = call i32 @FixedDiv(i32 noundef 65536, i32 noundef %11)
  store i32 %12, ptr @scale_ftom, align 4, !tbaa !5
  ret void
}

attributes #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 = { 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 = !{!"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"

@f_w = external hidden local_unnamed_addr global i32, align 4
@scale_ftom = external hidden local_unnamed_addr global i32, align 4
@f_h = external hidden local_unnamed_addr global i32, align 4
@scale_mtof = external hidden local_unnamed_addr global i32, align 4
@min_scale_mtof = external hidden local_unnamed_addr global i32, align 4
@max_scale_mtof = external hidden local_unnamed_addr global i32, align 4
@leveljuststarted = external hidden local_unnamed_addr global i32, align 4
@f_y = external hidden local_unnamed_addr global i32, align 4
@f_x = external hidden local_unnamed_addr global i32, align 4
@finit_width = external hidden local_unnamed_addr global i32, align 4
@finit_height = external hidden local_unnamed_addr global i32, align 4

declare i32 @FixedDiv(i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local void @AM_findMinMaxBoundaries() local_unnamed_addr #1

; Function Attrs: nounwind uwtable
declare dso_local void @AM_clearMarks() local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local void @AM_LevelInit() local_unnamed_addr #1 {
  store i32 0, ptr @leveljuststarted, align 4, !tbaa !5
  store i32 0, ptr @f_y, align 4, !tbaa !5
  store i32 0, ptr @f_x, align 4, !tbaa !5
  %1 = load i32, ptr @finit_width, align 4, !tbaa !5
  store i32 %1, ptr @f_w, align 4, !tbaa !5
  %2 = load i32, ptr @finit_height, align 4, !tbaa !5
  store i32 %2, ptr @f_h, align 4, !tbaa !5
  tail call void @AM_clearMarks()
  tail call void @AM_findMinMaxBoundaries()
  %3 = load i32, ptr @min_scale_mtof, align 4, !tbaa !5
  %4 = tail call i32 @FixedDiv(i32 noundef %3, i32 noundef 45875) #2
  store i32 %4, ptr @scale_mtof, align 4, !tbaa !5
  %5 = load i32, ptr @max_scale_mtof, align 4, !tbaa !5
  %6 = icmp sgt i32 %4, %5
  br i1 %6, label %7, label %9

7:                                                ; preds = %0
  %8 = load i32, ptr @min_scale_mtof, align 4, !tbaa !5
  store i32 %8, ptr @scale_mtof, align 4, !tbaa !5
  br label %9

9:                                                ; preds = %7, %0
  %10 = phi i32 [ %8, %7 ], [ %4, %0 ]
  %11 = tail call i32 @FixedDiv(i32 noundef 65536, i32 noundef %10) #2
  store i32 %11, ptr @scale_ftom, align 4, !tbaa !5
  ret void
}

attributes #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 = { 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 #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: EarlyCSEPass,GVNPass,GlobalOptPass,InstCombinePass,TailCallElimPass