; LLVM IR from alekmaul/pvsneslib :: snes-examples/games/breakout (breakout)

; 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"

; Function Attrs: nounwind uwtable
define dso_local void @writestring(ptr noundef %0, ptr noundef %1, i16 noundef zeroext %2, i16 noundef zeroext %3) #0 {
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i16, align 2
  %8 = alloca i16, align 2
  %9 = alloca i16, align 2
  %10 = alloca i8, align 1
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store i16 %2, ptr %7, align 2, !tbaa !9
  store i16 %3, ptr %8, align 2, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 2, ptr %9) #2
  %11 = load i16, ptr %7, align 2, !tbaa !9
  store i16 %11, ptr %9, align 2, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 1, ptr %10) #2
  br label %12

12:                                               ; preds = %39, %4
  %13 = load ptr, ptr %5, align 8, !tbaa !5
  %14 = load i8, ptr %13, align 1, !tbaa !11
  store i8 %14, ptr %10, align 1, !tbaa !11
  %15 = icmp ne i8 %14, 0
  br i1 %15, label %16, label %42

16:                                               ; preds = %12
  %17 = load i8, ptr %10, align 1, !tbaa !11
  %18 = zext i8 %17 to i32
  %19 = icmp eq i32 %18, 10
  br i1 %19, label %20, label %26

20:                                               ; preds = %16
  %21 = load i16, ptr %9, align 2, !tbaa !9
  %22 = zext i16 %21 to i32
  %23 = add nsw i32 %22, 32
  %24 = trunc i32 %23 to i16
  store i16 %24, ptr %9, align 2, !tbaa !9
  %25 = load i16, ptr %9, align 2, !tbaa !9
  store i16 %25, ptr %7, align 2, !tbaa !9
  br label %39

26:                                               ; preds = %16
  %27 = load i8, ptr %10, align 1, !tbaa !11
  %28 = zext i8 %27 to i32
  %29 = load i16, ptr %8, align 2, !tbaa !9
  %30 = zext i16 %29 to i32
  %31 = add nsw i32 %28, %30
  %32 = trunc i32 %31 to i16
  %33 = load ptr, ptr %6, align 8, !tbaa !5
  %34 = load i16, ptr %7, align 2, !tbaa !9
  %35 = zext i16 %34 to i64
  %36 = getelementptr inbounds i16, ptr %33, i64 %35
  store i16 %32, ptr %36, align 2, !tbaa !9
  %37 = load i16, ptr %7, align 2, !tbaa !9
  %38 = add i16 %37, 1
  store i16 %38, ptr %7, align 2, !tbaa !9
  br label %39

39:                                               ; preds = %26, %20
  %40 = load ptr, ptr %5, align 8, !tbaa !5
  %41 = getelementptr inbounds i8, ptr %40, i32 1
  store ptr %41, ptr %5, align 8, !tbaa !5
  br label %12, !llvm.loop !12

42:                                               ; preds = %12
  call void @llvm.lifetime.end.p0(i64 1, ptr %10) #2
  call void @llvm.lifetime.end.p0(i64 2, ptr %9) #2
  ret void
}

; 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

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, !10, i64 0}
!10 = !{!"short", !7, i64 0}
!11 = !{!7, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


; 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: nofree norecurse nosync nounwind memory(read, argmem: readwrite, inaccessiblemem: none) uwtable
define dso_local void @writestring(ptr nocapture noundef readonly %0, ptr nocapture noundef writeonly %1, i16 noundef zeroext %2, i16 noundef zeroext %3) local_unnamed_addr #0 {
  br label %5

5:                                                ; preds = %15, %4
  %.011 = phi i16 [ %2, %4 ], [ %.112, %15 ]
  %.010 = phi i16 [ %2, %4 ], [ %.1, %15 ]
  %.0 = phi ptr [ %0, %4 ], [ %16, %15 ]
  %6 = load i8, ptr %.0, align 1, !tbaa !5
  switch i8 %6, label %9 [
    i8 0, label %17
    i8 10, label %7
  ]

7:                                                ; preds = %5
  %8 = add i16 %.010, 32
  br label %15

9:                                                ; preds = %5
  %10 = zext i8 %6 to i16
  %11 = add i16 %10, %3
  %12 = zext i16 %.011 to i64
  %13 = getelementptr inbounds i16, ptr %1, i64 %12
  store i16 %11, ptr %13, align 2, !tbaa !8
  %14 = add i16 %.011, 1
  br label %15

15:                                               ; preds = %9, %7
  %.112 = phi i16 [ %8, %7 ], [ %14, %9 ]
  %.1 = phi i16 [ %8, %7 ], [ %.010, %9 ]
  %16 = getelementptr inbounds i8, ptr %.0, i64 1
  br label %5, !llvm.loop !10

17:                                               ; preds = %5
  ret void
}

attributes #0 = { nofree norecurse nosync nounwind memory(read, argmem: readwrite, inaccessiblemem: none) 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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C/C++ TBAA"}
!8 = !{!9, !9, i64 0}
!9 = !{!"short", !6, i64 0}
!10 = distinct !{!10, !11}
!11 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass