; LLVM IR from Farama-Foundation/stable-retro :: cores/gb/libgambatte/src/video/ly_counter.ll (ZNK8gambatte9LyCounter13nextLineCycleEjm)

; 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"

%"class.gambatte::LyCounter" = type <{ i64, i16, i8, i8, [4 x i8] }>

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i64 @_ZNK8gambatte9LyCounter13nextLineCycleEjm(ptr noundef nonnull align 8 dereferenceable(12) %0, i32 noundef %1, i64 noundef %2) #0 align 2 {
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i64, align 8
  %7 = alloca i64, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  store i64 %2, ptr %6, align 8, !tbaa !11
  %8 = load ptr, ptr %4, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #2
  %9 = getelementptr inbounds %"class.gambatte::LyCounter", ptr %8, i32 0, i32 0
  %10 = load i64, ptr %9, align 8, !tbaa !13
  %11 = load i32, ptr %5, align 4, !tbaa !9
  %12 = getelementptr inbounds %"class.gambatte::LyCounter", ptr %8, i32 0, i32 3
  %13 = load i8, ptr %12, align 1, !tbaa !17, !range !18, !noundef !19
  %14 = trunc i8 %13 to i1
  %15 = zext i1 %14 to i32
  %16 = shl i32 %11, %15
  %17 = zext i32 %16 to i64
  %18 = add i64 %10, %17
  store i64 %18, ptr %7, align 8, !tbaa !11
  %19 = load i64, ptr %7, align 8, !tbaa !11
  %20 = load i64, ptr %6, align 8, !tbaa !11
  %21 = sub i64 %19, %20
  %22 = getelementptr inbounds %"class.gambatte::LyCounter", ptr %8, i32 0, i32 1
  %23 = load i16, ptr %22, align 8, !tbaa !20
  %24 = zext i16 %23 to i64
  %25 = icmp ugt i64 %21, %24
  br i1 %25, label %26, label %32

26:                                               ; preds = %3
  %27 = getelementptr inbounds %"class.gambatte::LyCounter", ptr %8, i32 0, i32 1
  %28 = load i16, ptr %27, align 8, !tbaa !20
  %29 = zext i16 %28 to i64
  %30 = load i64, ptr %7, align 8, !tbaa !11
  %31 = sub i64 %30, %29
  store i64 %31, ptr %7, align 8, !tbaa !11
  br label %32

32:                                               ; preds = %26, %3
  %33 = load i64, ptr %7, align 8, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #2
  ret i64 %33
}

; 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 = { mustprogress 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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"long", !7, i64 0}
!13 = !{!14, !12, i64 0}
!14 = !{!"_ZTSN8gambatte9LyCounterE", !12, i64 0, !15, i64 8, !7, i64 10, !16, i64 11}
!15 = !{!"short", !7, i64 0}
!16 = !{!"bool", !7, i64 0}
!17 = !{!14, !16, i64 11}
!18 = !{i8 0, i8 2}
!19 = !{}
!20 = !{!14, !15, i64 8}


; 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: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: read) uwtable
define dso_local noundef i64 @_ZNK8gambatte9LyCounter13nextLineCycleEjm(ptr nocapture noundef nonnull readonly align 8 dereferenceable(12) %0, i32 noundef %1, i64 noundef %2) local_unnamed_addr #0 align 2 {
  %4 = load i64, ptr %0, align 8, !tbaa !5
  %5 = getelementptr inbounds i8, ptr %0, i64 11
  %6 = load i8, ptr %5, align 1, !tbaa !12, !range !13, !noundef !14
  %7 = zext nneg i8 %6 to i32
  %8 = shl i32 %1, %7
  %9 = zext i32 %8 to i64
  %10 = add i64 %4, %9
  %11 = sub i64 %10, %2
  %12 = getelementptr inbounds i8, ptr %0, i64 8
  %13 = load i16, ptr %12, align 8, !tbaa !15
  %14 = zext i16 %13 to i64
  %15 = icmp ugt i64 %11, %14
  %16 = select i1 %15, i64 %14, i64 0
  %spec.select = sub i64 %10, %16
  ret i64 %spec.select
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: read) 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, !7, i64 0}
!6 = !{!"_ZTSN8gambatte9LyCounterE", !7, i64 0, !10, i64 8, !8, i64 10, !11, i64 11}
!7 = !{!"long", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"short", !8, i64 0}
!11 = !{!"bool", !8, i64 0}
!12 = !{!6, !11, i64 11}
!13 = !{i8 0, i8 2}
!14 = !{}
!15 = !{!6, !10, i64 8}


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