; LLVM IR from Farama-Foundation/stable-retro :: cores/gb/libgambatte/src/video/ly_counter.ll (ZN8gambatte9LyCounter7doEventEv)

; 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 void @_ZN8gambatte9LyCounter7doEventEv(ptr noundef nonnull align 8 dereferenceable(12) %0) #0 align 2 {
  %2 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %3 = load ptr, ptr %2, align 8
  %4 = getelementptr inbounds %"class.gambatte::LyCounter", ptr %3, i32 0, i32 2
  %5 = load i8, ptr %4, align 2, !tbaa !9
  %6 = add i8 %5, 1
  store i8 %6, ptr %4, align 2, !tbaa !9
  %7 = getelementptr inbounds %"class.gambatte::LyCounter", ptr %3, i32 0, i32 2
  %8 = load i8, ptr %7, align 2, !tbaa !9
  %9 = zext i8 %8 to i32
  %10 = icmp eq i32 %9, 154
  br i1 %10, label %11, label %13

11:                                               ; preds = %1
  %12 = getelementptr inbounds %"class.gambatte::LyCounter", ptr %3, i32 0, i32 2
  store i8 0, ptr %12, align 2, !tbaa !9
  br label %13

13:                                               ; preds = %11, %1
  %14 = getelementptr inbounds %"class.gambatte::LyCounter", ptr %3, i32 0, i32 0
  %15 = load i64, ptr %14, align 8, !tbaa !14
  %16 = getelementptr inbounds %"class.gambatte::LyCounter", ptr %3, i32 0, i32 1
  %17 = load i16, ptr %16, align 8, !tbaa !15
  %18 = zext i16 %17 to i64
  %19 = add i64 %15, %18
  %20 = getelementptr inbounds %"class.gambatte::LyCounter", ptr %3, i32 0, i32 0
  store i64 %19, ptr %20, align 8, !tbaa !14
  ret void
}

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" }

!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, !7, i64 10}
!10 = !{!"_ZTSN8gambatte9LyCounterE", !11, i64 0, !12, i64 8, !7, i64 10, !13, i64 11}
!11 = !{!"long", !7, i64 0}
!12 = !{!"short", !7, i64 0}
!13 = !{!"bool", !7, i64 0}
!14 = !{!10, !11, i64 0}
!15 = !{!10, !12, 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: readwrite) uwtable
define dso_local void @_ZN8gambatte9LyCounter7doEventEv(ptr nocapture noundef nonnull align 8 dereferenceable(12) %0) local_unnamed_addr #0 align 2 {
  %2 = getelementptr inbounds i8, ptr %0, i64 10
  %3 = load i8, ptr %2, align 2, !tbaa !5
  %4 = add i8 %3, 1
  %5 = icmp eq i8 %4, -102
  %spec.select = select i1 %5, i8 0, i8 %4
  store i8 %spec.select, ptr %2, align 2, !tbaa !5
  %6 = load i64, ptr %0, align 8, !tbaa !12
  %7 = getelementptr inbounds i8, ptr %0, i64 8
  %8 = load i16, ptr %7, align 8, !tbaa !13
  %9 = zext i16 %8 to i64
  %10 = add i64 %6, %9
  store i64 %10, ptr %0, align 8, !tbaa !12
  ret void
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: readwrite) 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, !8, i64 10}
!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, !7, i64 0}
!13 = !{!6, !10, i64 8}


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