; LLVM IR from fhanau/Efficient-Compression-Tool :: src/zopfli (lz77)

; 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.ZopfliLZ77Store = type { ptr, ptr, i64, i8 }

; Function Attrs: nounwind uwtable
declare dso_local void @ZopfliCleanLZ77Store(ptr noundef) #0

; Function Attrs: nounwind uwtable
define dso_local void @ZopfliCopyLZ77Store(ptr noundef %0, ptr noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  %5 = load ptr, ptr %4, align 8, !tbaa !5
  call void @ZopfliCleanLZ77Store(ptr noundef %5)
  %6 = load ptr, ptr %3, align 8, !tbaa !5
  %7 = getelementptr inbounds %struct.ZopfliLZ77Store, ptr %6, i32 0, i32 2
  %8 = load i64, ptr %7, align 8, !tbaa !9
  %9 = mul i64 2, %8
  %10 = call noalias ptr @malloc(i64 noundef %9) #4
  %11 = load ptr, ptr %4, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.ZopfliLZ77Store, ptr %11, i32 0, i32 0
  store ptr %10, ptr %12, align 8, !tbaa !12
  %13 = load ptr, ptr %3, align 8, !tbaa !5
  %14 = getelementptr inbounds %struct.ZopfliLZ77Store, ptr %13, i32 0, i32 2
  %15 = load i64, ptr %14, align 8, !tbaa !9
  %16 = mul i64 2, %15
  %17 = call noalias ptr @malloc(i64 noundef %16) #4
  %18 = load ptr, ptr %4, align 8, !tbaa !5
  %19 = getelementptr inbounds %struct.ZopfliLZ77Store, ptr %18, i32 0, i32 1
  store ptr %17, ptr %19, align 8, !tbaa !13
  %20 = load ptr, ptr %4, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct.ZopfliLZ77Store, ptr %20, i32 0, i32 0
  %22 = load ptr, ptr %21, align 8, !tbaa !12
  %23 = icmp ne ptr %22, null
  br i1 %23, label %24, label %29

24:                                               ; preds = %2
  %25 = load ptr, ptr %4, align 8, !tbaa !5
  %26 = getelementptr inbounds %struct.ZopfliLZ77Store, ptr %25, i32 0, i32 1
  %27 = load ptr, ptr %26, align 8, !tbaa !13
  %28 = icmp ne ptr %27, null
  br i1 %28, label %30, label %29

29:                                               ; preds = %24, %2
  call void @exit(i32 noundef 1) #5
  unreachable

30:                                               ; preds = %24
  %31 = load ptr, ptr %3, align 8, !tbaa !5
  %32 = getelementptr inbounds %struct.ZopfliLZ77Store, ptr %31, i32 0, i32 2
  %33 = load i64, ptr %32, align 8, !tbaa !9
  %34 = load ptr, ptr %4, align 8, !tbaa !5
  %35 = getelementptr inbounds %struct.ZopfliLZ77Store, ptr %34, i32 0, i32 2
  store i64 %33, ptr %35, align 8, !tbaa !9
  %36 = load ptr, ptr %4, align 8, !tbaa !5
  %37 = getelementptr inbounds %struct.ZopfliLZ77Store, ptr %36, i32 0, i32 0
  %38 = load ptr, ptr %37, align 8, !tbaa !12
  %39 = load ptr, ptr %3, align 8, !tbaa !5
  %40 = getelementptr inbounds %struct.ZopfliLZ77Store, ptr %39, i32 0, i32 0
  %41 = load ptr, ptr %40, align 8, !tbaa !12
  %42 = load ptr, ptr %3, align 8, !tbaa !5
  %43 = getelementptr inbounds %struct.ZopfliLZ77Store, ptr %42, i32 0, i32 2
  %44 = load i64, ptr %43, align 8, !tbaa !9
  %45 = mul i64 %44, 2
  call void @llvm.memcpy.p0.p0.i64(ptr align 2 %38, ptr align 2 %41, i64 %45, i1 false)
  %46 = load ptr, ptr %4, align 8, !tbaa !5
  %47 = getelementptr inbounds %struct.ZopfliLZ77Store, ptr %46, i32 0, i32 1
  %48 = load ptr, ptr %47, align 8, !tbaa !13
  %49 = load ptr, ptr %3, align 8, !tbaa !5
  %50 = getelementptr inbounds %struct.ZopfliLZ77Store, ptr %49, i32 0, i32 1
  %51 = load ptr, ptr %50, align 8, !tbaa !13
  %52 = load ptr, ptr %3, align 8, !tbaa !5
  %53 = getelementptr inbounds %struct.ZopfliLZ77Store, ptr %52, i32 0, i32 2
  %54 = load i64, ptr %53, align 8, !tbaa !9
  %55 = mul i64 %54, 2
  call void @llvm.memcpy.p0.p0.i64(ptr align 2 %48, ptr align 2 %51, i64 %55, i1 false)
  ret void
}

; Function Attrs: nounwind allocsize(0)
declare noalias ptr @malloc(i64 noundef) #1

; Function Attrs: noreturn nounwind
declare void @exit(i32 noundef) #2

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #3

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 = { nounwind allocsize(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 = { noreturn nounwind "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 #3 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { nounwind allocsize(0) }
attributes #5 = { noreturn 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, !11, i64 16}
!10 = !{!"ZopfliLZ77Store", !6, i64 0, !6, i64 8, !11, i64 16, !7, i64 24}
!11 = !{!"long", !7, i64 0}
!12 = !{!10, !6, i64 0}
!13 = !{!10, !6, 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: nounwind uwtable
declare dso_local void @ZopfliCleanLZ77Store(ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @ZopfliCopyLZ77Store(ptr nocapture noundef readonly %0, ptr noundef %1) local_unnamed_addr #0 {
  tail call void @ZopfliCleanLZ77Store(ptr noundef %1)
  %3 = getelementptr inbounds i8, ptr %0, i64 16
  %4 = load i64, ptr %3, align 8, !tbaa !5
  %5 = shl i64 %4, 1
  %6 = tail call noalias ptr @malloc(i64 noundef %5) #4
  store ptr %6, ptr %1, align 8, !tbaa !11
  %7 = tail call noalias ptr @malloc(i64 noundef %5) #4
  %8 = getelementptr inbounds i8, ptr %1, i64 8
  store ptr %7, ptr %8, align 8, !tbaa !12
  %.not = icmp eq ptr %6, null
  %.not15 = icmp eq ptr %7, null
  %or.cond = or i1 %.not, %.not15
  br i1 %or.cond, label %9, label %10

9:                                                ; preds = %2
  tail call void @exit(i32 noundef 1) #5
  unreachable

10:                                               ; preds = %2
  %11 = getelementptr inbounds i8, ptr %1, i64 16
  store i64 %4, ptr %11, align 8, !tbaa !5
  %12 = load ptr, ptr %0, align 8, !tbaa !11
  %13 = load i64, ptr %3, align 8, !tbaa !5
  %14 = shl i64 %13, 1
  tail call void @llvm.memcpy.p0.p0.i64(ptr nonnull align 2 %6, ptr align 2 %12, i64 %14, i1 false)
  %15 = getelementptr inbounds i8, ptr %0, i64 8
  %16 = load ptr, ptr %15, align 8, !tbaa !12
  tail call void @llvm.memcpy.p0.p0.i64(ptr nonnull align 2 %7, ptr align 2 %16, i64 %14, i1 false)
  ret void
}

; Function Attrs: mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite)
declare noalias noundef ptr @malloc(i64 noundef) local_unnamed_addr #1

; Function Attrs: noreturn nounwind
declare void @exit(i32 noundef) local_unnamed_addr #2

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #3

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 = { mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite) "alloc-family"="malloc" "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 = { noreturn nounwind "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 #3 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { nounwind allocsize(0) }
attributes #5 = { noreturn 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, !10, i64 16}
!6 = !{!"ZopfliLZ77Store", !7, i64 0, !7, i64 8, !10, i64 16, !8, i64 24}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"long", !8, i64 0}
!11 = !{!6, !7, i64 0}
!12 = !{!6, !7, i64 8}


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