; LLVM IR from Simple-XX/SimpleKernel :: src/kernel/pmm.ll (ZN3PMM14move_boot_infoEv)

; 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"

@_ZN9BOOT_INFO14boot_info_sizeE = external global i64, align 8
@boot_info_addr = external global i64, align 8

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN3PMM14move_boot_infoEv(ptr noundef nonnull align 8 dereferenceable(72) %0) #0 align 2 {
  %2 = alloca ptr, align 8
  %3 = alloca i64, align 8
  %4 = alloca i64, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %5 = load ptr, ptr %2, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #5
  %6 = load i64, ptr @_ZN9BOOT_INFO14boot_info_sizeE, align 8, !tbaa !9
  %7 = udiv i64 %6, 4096
  store i64 %7, ptr %3, align 8, !tbaa !9
  %8 = load i64, ptr @_ZN9BOOT_INFO14boot_info_sizeE, align 8, !tbaa !9
  %9 = urem i64 %8, 4096
  %10 = icmp ne i64 %9, 0
  br i1 %10, label %11, label %14

11:                                               ; preds = %1
  %12 = load i64, ptr %3, align 8, !tbaa !9
  %13 = add i64 %12, 1
  store i64 %13, ptr %3, align 8, !tbaa !9
  br label %14

14:                                               ; preds = %11, %1
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #5
  %15 = call noundef nonnull align 8 dereferenceable(72) ptr @_ZN3PMM12get_instanceEv()
  %16 = load i64, ptr %3, align 8, !tbaa !9
  %17 = call noundef i64 @_ZN3PMM18alloc_pages_kernelEm(ptr noundef nonnull align 8 dereferenceable(72) %15, i64 noundef %16)
  store i64 %17, ptr %4, align 8, !tbaa !9
  %18 = load i64, ptr %4, align 8, !tbaa !9
  %19 = inttoptr i64 %18 to ptr
  %20 = load i64, ptr @boot_info_addr, align 8, !tbaa !9
  %21 = inttoptr i64 %20 to ptr
  %22 = load i64, ptr %3, align 8, !tbaa !9
  %23 = mul i64 %22, 4096
  call void @llvm.memcpy.p0.p0.i64(ptr align 1 %19, ptr align 1 %21, i64 %23, i1 false)
  %24 = load i64, ptr %4, align 8, !tbaa !9
  store i64 %24, ptr @boot_info_addr, align 8, !tbaa !9
  %25 = call noundef zeroext i1 @_ZN9BOOT_INFO4initEv()
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #5
  ret void
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(72) ptr @_ZN3PMM12get_instanceEv() #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef i64 @_ZN3PMM18alloc_pages_kernelEm(ptr noundef nonnull align 8 dereferenceable(72), i64 noundef) #0 align 2

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #3

declare noundef zeroext i1 @_ZN9BOOT_INFO4initEv() #4

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

attributes #0 = { mustprogress 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 = { 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 #3 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { "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 #5 = { 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 = !{!"long", !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"

@_ZN9BOOT_INFO14boot_info_sizeE = external local_unnamed_addr global i64, align 8
@boot_info_addr = external local_unnamed_addr global i64, align 8

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN3PMM14move_boot_infoEv(ptr nocapture noundef nonnull readnone align 8 dereferenceable(72) %0) local_unnamed_addr #0 align 2 {
  %2 = load i64, ptr @_ZN9BOOT_INFO14boot_info_sizeE, align 8, !tbaa !5
  %3 = lshr i64 %2, 12
  %4 = and i64 %2, 4095
  %.not = icmp ne i64 %4, 0
  %5 = zext i1 %.not to i64
  %spec.select = add nuw nsw i64 %3, %5
  %6 = tail call noundef nonnull align 8 dereferenceable(72) ptr @_ZN3PMM12get_instanceEv()
  %7 = tail call noundef i64 @_ZN3PMM18alloc_pages_kernelEm(ptr noundef nonnull align 8 dereferenceable(72) %6, i64 noundef %spec.select)
  %8 = inttoptr i64 %7 to ptr
  %9 = load i64, ptr @boot_info_addr, align 8, !tbaa !5
  %10 = inttoptr i64 %9 to ptr
  %11 = shl i64 %spec.select, 12
  tail call void @llvm.memcpy.p0.p0.i64(ptr align 1 %8, ptr align 1 %10, i64 %11, i1 false)
  store i64 %7, ptr @boot_info_addr, align 8, !tbaa !5
  %12 = tail call noundef zeroext i1 @_ZN9BOOT_INFO4initEv()
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(72) ptr @_ZN3PMM12get_instanceEv() local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef i64 @_ZN3PMM18alloc_pages_kernelEm(ptr noundef nonnull align 8 dereferenceable(72), i64 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #2

declare noundef zeroext i1 @_ZN9BOOT_INFO4initEv() local_unnamed_addr #3

attributes #0 = { mustprogress 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 = { 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 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { "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 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}


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