; LLVM IR from intel/qpl :: sources/middle-layer/util (indexing)

; 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.qpl_index_table = type { i32, i32, i32, ptr }

; 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: mustprogress nounwind uwtable
define dso_local i32 @qpl_find_header_block_index(ptr noundef %0, i32 noundef %1, ptr noundef %2) #1 {
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store i32 %1, ptr %6, align 4, !tbaa !9
  store ptr %2, ptr %7, align 8, !tbaa !5
  %9 = load i32, ptr %6, align 4, !tbaa !9
  %10 = load ptr, ptr %5, align 8, !tbaa !5
  %11 = getelementptr inbounds %struct.qpl_index_table, ptr %10, i32 0, i32 1
  %12 = load i32, ptr %11, align 4, !tbaa !11
  %13 = icmp uge i32 %9, %12
  br i1 %13, label %14, label %15

14:                                               ; preds = %3
  store i32 57, ptr %4, align 4
  br label %34

15:                                               ; preds = %3
  %16 = load ptr, ptr %5, align 8, !tbaa !5
  %17 = getelementptr inbounds %struct.qpl_index_table, ptr %16, i32 0, i32 2
  %18 = load i32, ptr %17, align 8, !tbaa !13
  %19 = icmp eq i32 %18, 0
  br i1 %19, label %20, label %21

20:                                               ; preds = %15
  store i32 57, ptr %4, align 4
  br label %34

21:                                               ; preds = %15
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  %22 = load i32, ptr %6, align 4, !tbaa !9
  %23 = load ptr, ptr %5, align 8, !tbaa !5
  %24 = getelementptr inbounds %struct.qpl_index_table, ptr %23, i32 0, i32 2
  %25 = load i32, ptr %24, align 8, !tbaa !13
  %26 = udiv i32 %22, %25
  store i32 %26, ptr %8, align 4, !tbaa !9
  %27 = load i32, ptr %8, align 4, !tbaa !9
  %28 = load ptr, ptr %5, align 8, !tbaa !5
  %29 = getelementptr inbounds %struct.qpl_index_table, ptr %28, i32 0, i32 2
  %30 = load i32, ptr %29, align 8, !tbaa !13
  %31 = add i32 %30, 2
  %32 = mul i32 %27, %31
  %33 = load ptr, ptr %7, align 8, !tbaa !5
  store i32 %32, ptr %33, align 4, !tbaa !9
  store i32 0, ptr %4, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  br label %34

34:                                               ; preds = %21, %20, %14
  %35 = load i32, ptr %4, align 4
  ret i32 %35
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress 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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !10, i64 4}
!12 = !{!"_ZTS15qpl_index_table", !10, i64 0, !10, i64 4, !10, i64 8, !6, i64 16}
!13 = !{!12, !10, 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: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: readwrite) uwtable
define dso_local range(i32 0, 58) i32 @qpl_find_header_block_index(ptr nocapture noundef readonly %0, i32 noundef %1, ptr nocapture noundef writeonly %2) local_unnamed_addr #0 {
  %4 = getelementptr inbounds i8, ptr %0, i64 4
  %5 = load i32, ptr %4, align 4, !tbaa !5
  %.not = icmp ugt i32 %5, %1
  br i1 %.not, label %6, label %14

6:                                                ; preds = %3
  %7 = getelementptr inbounds i8, ptr %0, i64 8
  %8 = load i32, ptr %7, align 8, !tbaa !11
  %9 = icmp eq i32 %8, 0
  br i1 %9, label %14, label %10

10:                                               ; preds = %6
  %11 = udiv i32 %1, %8
  %12 = add i32 %8, 2
  %13 = mul i32 %11, %12
  store i32 %13, ptr %2, align 4, !tbaa !12
  br label %14

14:                                               ; preds = %6, %3, %10
  %.0 = phi i32 [ 0, %10 ], [ 57, %3 ], [ 57, %6 ]
  ret i32 %.0
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: readwrite) 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, !7, i64 4}
!6 = !{!"_ZTS15qpl_index_table", !7, i64 0, !7, i64 4, !7, i64 8, !10, i64 16}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !7, i64 8}
!12 = !{!7, !7, i64 0}


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