; LLVM IR from ShaneYCG/wflz :: wfLZ (wfLZ_ChunkDecompressCallback)

; 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._wfLZ_HeaderChunked = type { [4 x i8], i32, i32, i32 }

; Function Attrs: nounwind uwtable
declare dso_local i32 @wfLZ_RoundUp(i32 noundef, i32 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
declare dso_local i32 @wfLZ_GetCompressedSize(ptr noundef) #0

; Function Attrs: nounwind uwtable
define dso_local void @wfLZ_ChunkDecompressCallback(ptr noundef %0, ptr noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  %8 = load ptr, ptr %3, align 8, !tbaa !5
  store ptr %8, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  %9 = load ptr, ptr %6, align 8, !tbaa !5
  %10 = getelementptr inbounds %struct._wfLZ_HeaderChunked, ptr %9, i32 0, i32 3
  %11 = load i32, ptr %10, align 4, !tbaa !9
  store i32 %11, ptr %7, align 4, !tbaa !12
  %12 = load ptr, ptr %3, align 8, !tbaa !5
  %13 = getelementptr inbounds i8, ptr %12, i64 16
  store ptr %13, ptr %3, align 8, !tbaa !5
  %14 = load i32, ptr %7, align 4, !tbaa !12
  %15 = zext i32 %14 to i64
  %16 = mul i64 4, %15
  %17 = load ptr, ptr %3, align 8, !tbaa !5
  %18 = getelementptr inbounds i8, ptr %17, i64 %16
  store ptr %18, ptr %3, align 8, !tbaa !5
  store i32 0, ptr %5, align 4, !tbaa !12
  br label %19

19:                                               ; preds = %32, %2
  %20 = load i32, ptr %5, align 4, !tbaa !12
  %21 = load i32, ptr %7, align 4, !tbaa !12
  %22 = icmp ne i32 %20, %21
  br i1 %22, label %23, label %35

23:                                               ; preds = %19
  %24 = load ptr, ptr %4, align 8, !tbaa !5
  %25 = load ptr, ptr %3, align 8, !tbaa !5
  call void %24(ptr noundef %25)
  %26 = load ptr, ptr %3, align 8, !tbaa !5
  %27 = call i32 @wfLZ_GetCompressedSize(ptr noundef %26)
  %28 = call i32 @wfLZ_RoundUp(i32 noundef %27, i32 noundef 16)
  %29 = load ptr, ptr %3, align 8, !tbaa !5
  %30 = zext i32 %28 to i64
  %31 = getelementptr inbounds i8, ptr %29, i64 %30
  store ptr %31, ptr %3, align 8, !tbaa !5
  br label %32

32:                                               ; preds = %23
  %33 = load i32, ptr %5, align 4, !tbaa !12
  %34 = add i32 %33, 1
  store i32 %34, ptr %5, align 4, !tbaa !12
  br label %19, !llvm.loop !13

35:                                               ; preds = %19
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  ret void
}

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 }

!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 12}
!10 = !{!"_wfLZ_HeaderChunked", !7, i64 0, !11, i64 4, !11, i64 8, !11, i64 12}
!11 = !{!"int", !7, i64 0}
!12 = !{!11, !11, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}


; 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 i32 @wfLZ_RoundUp(i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local i32 @wfLZ_GetCompressedSize(ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @wfLZ_ChunkDecompressCallback(ptr noundef %0, ptr nocapture noundef readonly %1) local_unnamed_addr #0 {
  %3 = getelementptr inbounds i8, ptr %0, i64 12
  %4 = load i32, ptr %3, align 4, !tbaa !5
  %.not12 = icmp eq i32 %4, 0
  br i1 %.not12, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %2
  %5 = getelementptr inbounds i8, ptr %0, i64 16
  %6 = zext i32 %4 to i64
  %7 = shl nuw nsw i64 %6, 2
  %8 = getelementptr inbounds i8, ptr %5, i64 %7
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.preheader, %.lr.ph
  %.014 = phi ptr [ %12, %.lr.ph ], [ %8, %.lr.ph.preheader ]
  %.01113 = phi i32 [ %13, %.lr.ph ], [ 0, %.lr.ph.preheader ]
  tail call void %1(ptr noundef %.014) #1
  %9 = tail call i32 @wfLZ_GetCompressedSize(ptr noundef %.014)
  %10 = tail call i32 @wfLZ_RoundUp(i32 noundef %9, i32 noundef 16)
  %11 = zext i32 %10 to i64
  %12 = getelementptr inbounds i8, ptr %.014, i64 %11
  %13 = add nuw i32 %.01113, 1
  %.not = icmp eq i32 %13, %4
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !10

._crit_edge:                                      ; preds = %.lr.ph, %2
  ret void
}

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 }

!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, !9, i64 12}
!6 = !{!"_wfLZ_HeaderChunked", !7, i64 0, !9, i64 4, !9, i64 8, !9, i64 12}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!"int", !7, i64 0}
!10 = distinct !{!10, !11}
!11 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass