; LLVM IR from indygreg/python-zstandard :: zstd (zstd)

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

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

; Function Attrs: nounwind uwtable
define dso_local i64 @FSE_compress_usingCTable(ptr noundef %0, i64 noundef %1, ptr noundef %2, i64 noundef %3, ptr noundef %4) #1 {
  %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 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) #2
  %14 = load i64, ptr %8, align 8, !tbaa !9
  %15 = load i64, ptr %10, align 8, !tbaa !9
  %16 = load i64, ptr %10, align 8, !tbaa !9
  %17 = lshr i64 %16, 7
  %18 = add i64 %15, %17
  %19 = add i64 %18, 4
  %20 = add i64 %19, 8
  %21 = icmp uge i64 %14, %20
  %22 = zext i1 %21 to i32
  store i32 %22, ptr %12, align 4, !tbaa !11
  %23 = load i32, ptr %12, align 4, !tbaa !11
  %24 = icmp ne i32 %23, 0
  br i1 %24, label %25, label %32

25:                                               ; preds = %5
  %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 @FSE_compress_usingCTable_generic(ptr noundef %26, i64 noundef %27, ptr noundef %28, i64 noundef %29, ptr noundef %30, i32 noundef 1)
  store i64 %31, ptr %6, align 8
  store i32 1, ptr %13, align 4
  br label %39

32:                                               ; preds = %5
  %33 = load ptr, ptr %7, align 8, !tbaa !5
  %34 = load i64, ptr %8, align 8, !tbaa !9
  %35 = load ptr, ptr %9, align 8, !tbaa !5
  %36 = load i64, ptr %10, align 8, !tbaa !9
  %37 = load ptr, ptr %11, align 8, !tbaa !5
  %38 = call i64 @FSE_compress_usingCTable_generic(ptr noundef %33, i64 noundef %34, ptr noundef %35, i64 noundef %36, ptr noundef %37, i32 noundef 0)
  store i64 %38, ptr %6, align 8
  store i32 1, ptr %13, align 4
  br label %39

39:                                               ; preds = %32, %25
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #2
  %40 = load i64, ptr %6, align 8
  ret i64 %40
}

; Function Attrs: nounwind uwtable
declare hidden i64 @FSE_compress_usingCTable_generic(ptr noundef, i64 noundef, ptr noundef, i64 noundef, ptr noundef, i32 noundef) #1

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 = !{!"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
define dso_local i64 @FSE_compress_usingCTable(ptr noundef %0, i64 noundef %1, ptr noundef %2, i64 noundef %3, ptr noundef %4) local_unnamed_addr #0 {
  %6 = lshr i64 %3, 7
  %7 = add i64 %3, 12
  %8 = add i64 %7, %6
  %.not = icmp ule i64 %8, %1
  %. = zext i1 %.not to i32
  %9 = tail call i64 @FSE_compress_usingCTable_generic(ptr noundef %0, i64 noundef %1, ptr noundef %2, i64 noundef %3, ptr noundef %4, i32 noundef %.)
  ret i64 %9
}

; Function Attrs: nounwind uwtable
declare hidden i64 @FSE_compress_usingCTable_generic(ptr noundef, i64 noundef, ptr noundef, i64 noundef, ptr noundef, i32 noundef) local_unnamed_addr #0

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" }

!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: EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass