; LLVM IR from lzfse/lzfse :: src (lzfse_decode)

; 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
declare dso_local i64 @lzfse_decode_scratch_size() #0

; Function Attrs: nounwind uwtable
declare dso_local i64 @lzfse_decode_buffer_with_scratch(ptr noalias noundef, i64 noundef, ptr noalias noundef, i64 noundef, ptr noalias noundef) #0

; 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

; Function Attrs: nounwind uwtable
define dso_local i64 @lzfse_decode_buffer(ptr noalias noundef %0, i64 noundef %1, ptr noalias noundef %2, i64 noundef %3, ptr noalias noundef %4) #0 {
  %6 = alloca i64, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i64, align 8
  %9 = alloca ptr, align 8
  %10 = alloca i64, align 8
  %11 = alloca ptr, align 8
  %12 = alloca i32, align 4
  %13 = alloca i64, align 8
  %14 = alloca i32, align 4
  store ptr %0, ptr %7, align 8, !tbaa !5
  store i64 %1, ptr %8, align 8, !tbaa !9
  store ptr %2, ptr %9, align 8, !tbaa !5
  store i64 %3, ptr %10, align 8, !tbaa !9
  store ptr %4, ptr %11, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #4
  store i32 0, ptr %12, align 4, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 8, ptr %13) #4
  store i64 0, ptr %13, align 8, !tbaa !9
  %15 = load ptr, ptr %11, align 8, !tbaa !5
  %16 = icmp eq ptr %15, null
  br i1 %16, label %17, label %21

17:                                               ; preds = %5
  %18 = call i64 @lzfse_decode_scratch_size()
  %19 = add i64 %18, 1
  %20 = call noalias ptr @malloc(i64 noundef %19) #5
  store ptr %20, ptr %11, align 8, !tbaa !5
  store i32 1, ptr %12, align 4, !tbaa !11
  br label %21

21:                                               ; preds = %17, %5
  %22 = load ptr, ptr %11, align 8, !tbaa !5
  %23 = icmp eq ptr %22, null
  br i1 %23, label %24, label %25

24:                                               ; preds = %21
  store i64 0, ptr %6, align 8
  store i32 1, ptr %14, align 4
  br label %38

25:                                               ; preds = %21
  %26 = load ptr, ptr %7, align 8, !tbaa !5
  %27 = load i64, ptr %8, align 8, !tbaa !9
  %28 = load ptr, ptr %9, align 8, !tbaa !5
  %29 = load i64, ptr %10, align 8, !tbaa !9
  %30 = load ptr, ptr %11, align 8, !tbaa !5
  %31 = call i64 @lzfse_decode_buffer_with_scratch(ptr noundef %26, i64 noundef %27, ptr noundef %28, i64 noundef %29, ptr noundef %30)
  store i64 %31, ptr %13, align 8, !tbaa !9
  %32 = load i32, ptr %12, align 4, !tbaa !11
  %33 = icmp ne i32 %32, 0
  br i1 %33, label %34, label %36

34:                                               ; preds = %25
  %35 = load ptr, ptr %11, align 8, !tbaa !5
  call void @free(ptr noundef %35) #4
  br label %36

36:                                               ; preds = %34, %25
  %37 = load i64, ptr %13, align 8, !tbaa !9
  store i64 %37, ptr %6, align 8
  store i32 1, ptr %14, align 4
  br label %38

38:                                               ; preds = %36, %24
  call void @llvm.lifetime.end.p0(i64 8, ptr %13) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #4
  %39 = load i64, ptr %6, align 8
  ret i64 %39
}

; Function Attrs: nounwind allocsize(0)
declare noalias ptr @malloc(i64 noundef) #2

; Function Attrs: nounwind
declare void @free(ptr noundef) #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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #3 = { 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 #4 = { nounwind }
attributes #5 = { nounwind allocsize(0) }

!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 = !{!"long", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}


; 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 i64 @lzfse_decode_scratch_size() local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local i64 @lzfse_decode_buffer_with_scratch(ptr noalias noundef, i64 noundef, ptr noalias noundef, i64 noundef, ptr noalias noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local i64 @lzfse_decode_buffer(ptr noalias noundef %0, i64 noundef %1, ptr noalias noundef %2, i64 noundef %3, ptr noalias noundef %4) local_unnamed_addr #0 {
  %.not = icmp eq ptr %4, null
  br i1 %.not, label %6, label %11

6:                                                ; preds = %5
  %7 = tail call i64 @lzfse_decode_scratch_size()
  %8 = add i64 %7, 1
  %9 = tail call noalias ptr @malloc(i64 noundef %8) #3
  %10 = icmp eq ptr %9, null
  br i1 %10, label %15, label %13

11:                                               ; preds = %5
  %12 = tail call i64 @lzfse_decode_buffer_with_scratch(ptr noundef %0, i64 noundef %1, ptr noundef %2, i64 noundef %3, ptr noundef nonnull %4)
  br label %15

13:                                               ; preds = %6
  %14 = tail call i64 @lzfse_decode_buffer_with_scratch(ptr noundef %0, i64 noundef %1, ptr noundef %2, i64 noundef %3, ptr noundef nonnull %9)
  tail call void @free(ptr noundef nonnull %9) #4
  br label %15

15:                                               ; preds = %11, %13, %6
  %.011 = phi i64 [ 0, %6 ], [ %14, %13 ], [ %12, %11 ]
  ret i64 %.011
}

; 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: mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite)
declare void @free(ptr allocptr nocapture noundef) local_unnamed_addr #2

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 = { mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, 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 #3 = { nounwind allocsize(0) }
attributes #4 = { 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)"}


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