; LLVM IR from Stephane-D/SGDK :: tools/xgmtool/src (ym2612)

; 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.YM2612 = type { [2 x [256 x i32]], [2 x [256 x i8]] }

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
define dso_local void @YM2612_clear(ptr noundef %0) #1 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #2
  store i32 0, ptr %3, align 4, !tbaa !9
  br label %4

4:                                                ; preds = %32, %1
  %5 = load i32, ptr %3, align 4, !tbaa !9
  %6 = icmp slt i32 %5, 32
  br i1 %6, label %7, label %35

7:                                                ; preds = %4
  %8 = load ptr, ptr %2, align 8, !tbaa !5
  %9 = getelementptr inbounds %struct.YM2612, ptr %8, i32 0, i32 0
  %10 = getelementptr inbounds [2 x [256 x i32]], ptr %9, i64 0, i64 0
  %11 = load i32, ptr %3, align 4, !tbaa !9
  %12 = sext i32 %11 to i64
  %13 = getelementptr inbounds [256 x i32], ptr %10, i64 0, i64 %12
  store i32 -1, ptr %13, align 4, !tbaa !9
  %14 = load ptr, ptr %2, align 8, !tbaa !5
  %15 = getelementptr inbounds %struct.YM2612, ptr %14, i32 0, i32 0
  %16 = getelementptr inbounds [2 x [256 x i32]], ptr %15, i64 0, i64 1
  %17 = load i32, ptr %3, align 4, !tbaa !9
  %18 = sext i32 %17 to i64
  %19 = getelementptr inbounds [256 x i32], ptr %16, i64 0, i64 %18
  store i32 -1, ptr %19, align 4, !tbaa !9
  %20 = load ptr, ptr %2, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct.YM2612, ptr %20, i32 0, i32 1
  %22 = getelementptr inbounds [2 x [256 x i8]], ptr %21, i64 0, i64 0
  %23 = load i32, ptr %3, align 4, !tbaa !9
  %24 = sext i32 %23 to i64
  %25 = getelementptr inbounds [256 x i8], ptr %22, i64 0, i64 %24
  store i8 0, ptr %25, align 1, !tbaa !11
  %26 = load ptr, ptr %2, align 8, !tbaa !5
  %27 = getelementptr inbounds %struct.YM2612, ptr %26, i32 0, i32 1
  %28 = getelementptr inbounds [2 x [256 x i8]], ptr %27, i64 0, i64 1
  %29 = load i32, ptr %3, align 4, !tbaa !9
  %30 = sext i32 %29 to i64
  %31 = getelementptr inbounds [256 x i8], ptr %28, i64 0, i64 %30
  store i8 0, ptr %31, align 1, !tbaa !11
  br label %32

32:                                               ; preds = %7
  %33 = load i32, ptr %3, align 4, !tbaa !9
  %34 = add nsw i32 %33, 1
  store i32 %34, ptr %3, align 4, !tbaa !9
  br label %4, !llvm.loop !13

35:                                               ; preds = %4
  store i32 32, ptr %3, align 4, !tbaa !9
  br label %36

36:                                               ; preds = %64, %35
  %37 = load i32, ptr %3, align 4, !tbaa !9
  %38 = icmp slt i32 %37, 256
  br i1 %38, label %39, label %67

39:                                               ; preds = %36
  %40 = load ptr, ptr %2, align 8, !tbaa !5
  %41 = getelementptr inbounds %struct.YM2612, ptr %40, i32 0, i32 0
  %42 = getelementptr inbounds [2 x [256 x i32]], ptr %41, i64 0, i64 0
  %43 = load i32, ptr %3, align 4, !tbaa !9
  %44 = sext i32 %43 to i64
  %45 = getelementptr inbounds [256 x i32], ptr %42, i64 0, i64 %44
  store i32 -1, ptr %45, align 4, !tbaa !9
  %46 = load ptr, ptr %2, align 8, !tbaa !5
  %47 = getelementptr inbounds %struct.YM2612, ptr %46, i32 0, i32 0
  %48 = getelementptr inbounds [2 x [256 x i32]], ptr %47, i64 0, i64 1
  %49 = load i32, ptr %3, align 4, !tbaa !9
  %50 = sext i32 %49 to i64
  %51 = getelementptr inbounds [256 x i32], ptr %48, i64 0, i64 %50
  store i32 -1, ptr %51, align 4, !tbaa !9
  %52 = load ptr, ptr %2, align 8, !tbaa !5
  %53 = getelementptr inbounds %struct.YM2612, ptr %52, i32 0, i32 1
  %54 = getelementptr inbounds [2 x [256 x i8]], ptr %53, i64 0, i64 0
  %55 = load i32, ptr %3, align 4, !tbaa !9
  %56 = sext i32 %55 to i64
  %57 = getelementptr inbounds [256 x i8], ptr %54, i64 0, i64 %56
  store i8 0, ptr %57, align 1, !tbaa !11
  %58 = load ptr, ptr %2, align 8, !tbaa !5
  %59 = getelementptr inbounds %struct.YM2612, ptr %58, i32 0, i32 1
  %60 = getelementptr inbounds [2 x [256 x i8]], ptr %59, i64 0, i64 1
  %61 = load i32, ptr %3, align 4, !tbaa !9
  %62 = sext i32 %61 to i64
  %63 = getelementptr inbounds [256 x i8], ptr %60, i64 0, i64 %62
  store i8 0, ptr %63, align 1, !tbaa !11
  br label %64

64:                                               ; preds = %39
  %65 = load i32, ptr %3, align 4, !tbaa !9
  %66 = add nsw i32 %65, 1
  store i32 %66, ptr %3, align 4, !tbaa !9
  br label %36, !llvm.loop !15

67:                                               ; preds = %36
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #2
  ret void
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"_Bool", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}
!15 = distinct !{!15, !14}


; 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: write) uwtable
define dso_local void @YM2612_clear(ptr nocapture noundef writeonly %0) local_unnamed_addr #0 {
.preheader:
  %1 = getelementptr inbounds i8, ptr %0, i64 1024
  %2 = getelementptr inbounds i8, ptr %0, i64 2048
  %3 = getelementptr inbounds i8, ptr %0, i64 2304
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 4 dereferenceable(128) %0, i8 -1, i64 128, i1 false), !tbaa !5
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 4 dereferenceable(128) %1, i8 -1, i64 128, i1 false), !tbaa !5
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 1 dereferenceable(32) %2, i8 0, i64 32, i1 false), !tbaa !9
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 1 dereferenceable(32) %3, i8 0, i64 32, i1 false), !tbaa !9
  %scevgep = getelementptr i8, ptr %0, i64 128
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 4 dereferenceable(896) %scevgep, i8 -1, i64 896, i1 false), !tbaa !5
  %scevgep22 = getelementptr i8, ptr %0, i64 1152
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 4 dereferenceable(896) %scevgep22, i8 -1, i64 896, i1 false), !tbaa !5
  %scevgep23 = getelementptr i8, ptr %0, i64 2080
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 1 dereferenceable(224) %scevgep23, i8 0, i64 224, i1 false), !tbaa !9
  %scevgep24 = getelementptr i8, ptr %0, i64 2336
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 1 dereferenceable(224) %scevgep24, i8 0, i64 224, i1 false), !tbaa !9
  ret void
}

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #1

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: write) 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 nounwind willreturn memory(argmem: write) }

!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"}
!9 = !{!10, !10, i64 0}
!10 = !{!"_Bool", !7, i64 0}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LICMPass,LoopIdiomRecognizePass,LoopRotatePass,LoopSimplifyPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass