; LLVM IR from p4lang/p4c :: backends/tofino/bf-utils/dynamic_hash (dynamic_hash)

; 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.bfn_hash_algorithm_ = type { i32, i8, i8, i32, i32, i8, i64, i64, i64, 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 noundef i32 @_Z17compute_bitvec_szPK19bfn_hash_algorithm_j(ptr noundef %0, i32 noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  %6 = load i32, ptr %4, align 4, !tbaa !9
  %7 = sub i32 %6, 1
  %8 = add i32 %7, 7
  %9 = udiv i32 %8, 8
  %10 = mul i32 %9, 8
  store i32 %10, ptr %5, align 4, !tbaa !9
  %11 = load ptr, ptr %3, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.bfn_hash_algorithm_, ptr %11, i32 0, i32 0
  %13 = load i32, ptr %12, align 8, !tbaa !11
  %14 = icmp eq i32 %13, 1
  br i1 %14, label %15, label %21

15:                                               ; preds = %2
  %16 = load ptr, ptr %3, align 8, !tbaa !5
  %17 = getelementptr inbounds %struct.bfn_hash_algorithm_, ptr %16, i32 0, i32 4
  %18 = load i32, ptr %17, align 4, !tbaa !17
  %19 = load i32, ptr %5, align 4, !tbaa !9
  %20 = add i32 %19, %18
  store i32 %20, ptr %5, align 4, !tbaa !9
  br label %21

21:                                               ; preds = %15, %2
  %22 = load i32, ptr %5, align 4, !tbaa !9
  %23 = add i32 %22, 63
  %24 = udiv i32 %23, 64
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  ret i32 %24
}

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, !13, i64 0}
!12 = !{!"_ZTS19bfn_hash_algorithm_", !13, i64 0, !14, i64 4, !14, i64 5, !15, i64 8, !10, i64 12, !14, i64 16, !16, i64 24, !16, i64 32, !16, i64 40, !6, i64 48}
!13 = !{!"_ZTS19bfn_hash_alg_type_t", !7, i64 0}
!14 = !{!"bool", !7, i64 0}
!15 = !{!"_ZTS13bfn_crc_alg_t", !7, i64 0}
!16 = !{!"long", !7, i64 0}
!17 = !{!12, !10, i64 12}


; 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: read) uwtable
define dso_local noundef range(i32 0, 67108864) i32 @_Z17compute_bitvec_szPK19bfn_hash_algorithm_j(ptr nocapture noundef readonly %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = add i32 %1, 6
  %4 = and i32 %3, -8
  %5 = load i32, ptr %0, align 8, !tbaa !5
  %6 = icmp eq i32 %5, 1
  br i1 %6, label %7, label %11

7:                                                ; preds = %2
  %8 = getelementptr inbounds i8, ptr %0, i64 12
  %9 = load i32, ptr %8, align 4, !tbaa !15
  %10 = add i32 %9, %4
  br label %11

11:                                               ; preds = %7, %2
  %.0 = phi i32 [ %10, %7 ], [ %4, %2 ]
  %12 = add i32 %.0, 63
  %13 = lshr i32 %12, 6
  ret i32 %13
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: read) 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 0}
!6 = !{!"_ZTS19bfn_hash_algorithm_", !7, i64 0, !10, i64 4, !10, i64 5, !11, i64 8, !12, i64 12, !10, i64 16, !13, i64 24, !13, i64 32, !13, i64 40, !14, i64 48}
!7 = !{!"_ZTS19bfn_hash_alg_type_t", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"bool", !8, i64 0}
!11 = !{!"_ZTS13bfn_crc_alg_t", !8, i64 0}
!12 = !{!"int", !8, i64 0}
!13 = !{!"long", !8, i64 0}
!14 = !{!"any pointer", !8, i64 0}
!15 = !{!6, !12, i64 12}


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