; LLVM IR from Simple-XX/SimpleKernel :: src/kernel/vmm.ll (ZN3VMM4initEv)

; 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"

@__executable_start = external global [0 x ptr], align 8
@.str.3 = external hidden unnamed_addr constant [11 x i8], align 1

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

declare noundef nonnull align 8 dereferenceable(72) ptr @_ZN3PMM12get_instanceEv() #1

declare noundef i64 @_ZN3PMM17alloc_page_kernelEv(ptr noundef nonnull align 8 dereferenceable(72)) #1

declare void @bzero(ptr noundef, 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: mustprogress uwtable
define dso_local noundef zeroext i1 @_ZN3VMM4initEv(ptr noundef nonnull align 1 dereferenceable(1) %0) #2 align 2 {
  %2 = alloca ptr, align 8
  %3 = alloca ptr, align 8
  %4 = alloca i64, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %5 = load ptr, ptr %2, align 8
  %6 = call noundef i32 @_ZN3GDT4initEv()
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #4
  %7 = call noundef nonnull align 8 dereferenceable(72) ptr @_ZN3PMM12get_instanceEv()
  %8 = call noundef i64 @_ZN3PMM17alloc_page_kernelEv(ptr noundef nonnull align 8 dereferenceable(72) %7)
  %9 = inttoptr i64 %8 to ptr
  store ptr %9, ptr %3, align 8, !tbaa !5
  %10 = load ptr, ptr %3, align 8, !tbaa !5
  call void @bzero(ptr noundef %10, i32 noundef 4096)
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #4
  store i64 ptrtoint (ptr @__executable_start to i64), ptr %4, align 8, !tbaa !9
  br label %11

11:                                               ; preds = %19, %1
  %12 = load i64, ptr %4, align 8, !tbaa !9
  %13 = icmp ult i64 %12, add (i64 ptrtoint (ptr @__executable_start to i64), i64 8388608)
  br i1 %13, label %15, label %14

14:                                               ; preds = %11
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #4
  br label %22

15:                                               ; preds = %11
  %16 = load ptr, ptr %3, align 8, !tbaa !5
  %17 = load i64, ptr %4, align 8, !tbaa !9
  %18 = load i64, ptr %4, align 8, !tbaa !9
  call void @_ZN3VMM4mmapEPmmmj(ptr noundef nonnull align 1 dereferenceable(1) %5, ptr noundef %16, i64 noundef %17, i64 noundef %18, i32 noundef 2)
  br label %19

19:                                               ; preds = %15
  %20 = load i64, ptr %4, align 8, !tbaa !9
  %21 = add i64 %20, 4096
  store i64 %21, ptr %4, align 8, !tbaa !9
  br label %11, !llvm.loop !11

22:                                               ; preds = %14
  %23 = load ptr, ptr %3, align 8, !tbaa !5
  call void @_ZN3VMM7set_pgdEPm(ptr noundef nonnull align 1 dereferenceable(1) %5, ptr noundef %23)
  %24 = call noundef zeroext i1 @_ZN3CPUL9ENABLE_PGEv()
  %25 = call i32 (ptr, ...) @info(ptr noundef @.str.3)
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #4
  ret i1 false
}

declare noundef i32 @_ZN3GDT4initEv() #1

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN3VMM4mmapEPmmmj(ptr noundef nonnull align 1 dereferenceable(1), ptr noundef, i64 noundef, i64 noundef, i32 noundef) #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN3VMM7set_pgdEPm(ptr noundef nonnull align 1 dereferenceable(1), ptr noundef) #2 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare hidden noundef zeroext i1 @_ZN3CPUL9ENABLE_PGEv() #3

declare i32 @info(ptr noundef, ...) #1

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { "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 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 = { inlinehint 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 #4 = { 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}
!11 = distinct !{!11, !12}
!12 = !{!"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"

@__executable_start = external global [0 x ptr], align 8
@.str.3 = external hidden unnamed_addr constant [11 x i8], align 1

declare noundef nonnull align 8 dereferenceable(72) ptr @_ZN3PMM12get_instanceEv() local_unnamed_addr #0

declare noundef i64 @_ZN3PMM17alloc_page_kernelEv(ptr noundef nonnull align 8 dereferenceable(72)) local_unnamed_addr #0

declare void @bzero(ptr noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
define dso_local noundef zeroext i1 @_ZN3VMM4initEv(ptr noundef nonnull align 1 dereferenceable(1) %0) local_unnamed_addr #1 align 2 {
  %2 = tail call noundef i32 @_ZN3GDT4initEv()
  %3 = tail call noundef nonnull align 8 dereferenceable(72) ptr @_ZN3PMM12get_instanceEv()
  %4 = tail call noundef i64 @_ZN3PMM17alloc_page_kernelEv(ptr noundef nonnull align 8 dereferenceable(72) %3)
  %5 = inttoptr i64 %4 to ptr
  tail call void @bzero(ptr noundef %5, i32 noundef 4096)
  %6 = icmp ult i64 ptrtoint (ptr @__executable_start to i64), add (i64 ptrtoint (ptr @__executable_start to i64), i64 8388608)
  br i1 %6, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %1
  tail call void @_ZN3VMM7set_pgdEPm(ptr noundef nonnull align 1 dereferenceable(1) %0, ptr noundef %5)
  %7 = tail call noundef zeroext i1 @_ZN3CPUL9ENABLE_PGEv()
  %8 = tail call i32 (ptr, ...) @info(ptr noundef nonnull @.str.3)
  ret i1 false

.lr.ph:                                           ; preds = %1, %.lr.ph
  %.07 = phi i64 [ %9, %.lr.ph ], [ ptrtoint (ptr @__executable_start to i64), %1 ]
  tail call void @_ZN3VMM4mmapEPmmmj(ptr noundef nonnull align 1 dereferenceable(1) %0, ptr noundef %5, i64 noundef %.07, i64 noundef %.07, i32 noundef 2)
  %9 = add i64 %.07, 4096
  %10 = icmp ult i64 %9, add (i64 ptrtoint (ptr @__executable_start to i64), i64 8388608)
  br i1 %10, label %.lr.ph, label %._crit_edge, !llvm.loop !5
}

declare noundef i32 @_ZN3GDT4initEv() local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN3VMM4mmapEPmmmj(ptr noundef nonnull align 1 dereferenceable(1), ptr noundef, i64 noundef, i64 noundef, i32 noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN3VMM7set_pgdEPm(ptr noundef nonnull align 1 dereferenceable(1), ptr noundef) local_unnamed_addr #1 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare hidden noundef zeroext i1 @_ZN3CPUL9ENABLE_PGEv() local_unnamed_addr #2

declare i32 @info(ptr noundef, ...) local_unnamed_addr #0

attributes #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 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 = { inlinehint 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" }

!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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


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