; LLVM IR from intel/qpl :: sources/isal/igzip (igzip_base)

; 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: inlinehint nounwind uwtable
declare hidden i32 @load_u32(ptr noundef) #1

; Function Attrs: inlinehint nounwind uwtable
declare hidden i32 @compute_hash(i32 noundef) #1

; 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 void @qpl_isal_deflate_hash_base(ptr noundef %0, i32 noundef %1, i32 noundef %2, ptr noundef %3, i32 noundef %4) #2 {
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca ptr, align 8
  %10 = alloca i32, align 4
  %11 = alloca ptr, align 8
  %12 = alloca ptr, align 8
  %13 = alloca i32, align 4
  %14 = alloca i32, align 4
  %15 = alloca i16, align 2
  store ptr %0, ptr %6, align 8, !tbaa !5
  store i32 %1, ptr %7, align 4, !tbaa !9
  store i32 %2, ptr %8, align 4, !tbaa !9
  store ptr %3, ptr %9, align 8, !tbaa !5
  store i32 %4, ptr %10, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #3
  %16 = load ptr, ptr %9, align 8, !tbaa !5
  store ptr %16, ptr %11, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %12) #3
  %17 = load ptr, ptr %9, align 8, !tbaa !5
  %18 = load i32, ptr %10, align 4, !tbaa !9
  %19 = zext i32 %18 to i64
  %20 = getelementptr inbounds i8, ptr %17, i64 %19
  %21 = getelementptr inbounds i8, ptr %20, i64 -4
  store ptr %21, ptr %12, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %13) #3
  store i32 0, ptr %13, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %14) #3
  store i32 0, ptr %14, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 2, ptr %15) #3
  %22 = load i32, ptr %8, align 4, !tbaa !9
  %23 = load i32, ptr %10, align 4, !tbaa !9
  %24 = sub i32 %22, %23
  %25 = trunc i32 %24 to i16
  store i16 %25, ptr %15, align 2, !tbaa !11
  br label %26

26:                                               ; preds = %30, %5
  %27 = load ptr, ptr %11, align 8, !tbaa !5
  %28 = load ptr, ptr %12, align 8, !tbaa !5
  %29 = icmp ule ptr %27, %28
  br i1 %29, label %30, label %46

30:                                               ; preds = %26
  %31 = load ptr, ptr %11, align 8, !tbaa !5
  %32 = call i32 @load_u32(ptr noundef %31)
  store i32 %32, ptr %13, align 4, !tbaa !9
  %33 = load i32, ptr %13, align 4, !tbaa !9
  %34 = call i32 @compute_hash(i32 noundef %33)
  %35 = load i32, ptr %7, align 4, !tbaa !9
  %36 = and i32 %34, %35
  store i32 %36, ptr %14, align 4, !tbaa !9
  %37 = load i16, ptr %15, align 2, !tbaa !11
  %38 = load ptr, ptr %6, align 8, !tbaa !5
  %39 = load i32, ptr %14, align 4, !tbaa !9
  %40 = zext i32 %39 to i64
  %41 = getelementptr inbounds i16, ptr %38, i64 %40
  store i16 %37, ptr %41, align 2, !tbaa !11
  %42 = load i16, ptr %15, align 2, !tbaa !11
  %43 = add i16 %42, 1
  store i16 %43, ptr %15, align 2, !tbaa !11
  %44 = load ptr, ptr %11, align 8, !tbaa !5
  %45 = getelementptr inbounds i8, ptr %44, i32 1
  store ptr %45, ptr %11, align 8, !tbaa !5
  br label %26, !llvm.loop !13

46:                                               ; preds = %26
  call void @llvm.lifetime.end.p0(i64 2, ptr %15) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #3
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { inlinehint 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 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 #3 = { 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 = !{!"short", !7, 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: inlinehint nounwind uwtable
declare hidden i32 @load_u32(ptr noundef) local_unnamed_addr #0

; Function Attrs: inlinehint nounwind uwtable
declare hidden i32 @compute_hash(i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @qpl_isal_deflate_hash_base(ptr nocapture noundef writeonly %0, i32 noundef %1, i32 noundef %2, ptr noundef %3, i32 noundef %4) local_unnamed_addr #1 {
  %6 = zext i32 %4 to i64
  %7 = getelementptr inbounds i8, ptr %3, i64 %6
  %8 = getelementptr inbounds i8, ptr %7, i64 -4
  %.not15 = icmp ult ptr %8, %3
  br i1 %.not15, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %5
  %9 = sub i32 %2, %4
  %10 = trunc i32 %9 to i16
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.preheader, %.lr.ph
  %.017 = phi i16 [ %16, %.lr.ph ], [ %10, %.lr.ph.preheader ]
  %.01416 = phi ptr [ %17, %.lr.ph ], [ %3, %.lr.ph.preheader ]
  %11 = tail call i32 @load_u32(ptr noundef %.01416)
  %12 = tail call i32 @compute_hash(i32 noundef %11)
  %13 = and i32 %12, %1
  %14 = zext i32 %13 to i64
  %15 = getelementptr inbounds i16, ptr %0, i64 %14
  store i16 %.017, ptr %15, align 2, !tbaa !5
  %16 = add i16 %.017, 1
  %17 = getelementptr inbounds i8, ptr %.01416, i64 1
  %.not = icmp ugt ptr %17, %8
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !9

._crit_edge:                                      ; preds = %.lr.ph, %5
  ret void
}

attributes #0 = { inlinehint 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 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)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"short", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


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