; LLVM IR from thepowersgang/mrustc :: tools/minicargo/file_timestamp.ll (ZN9Timestamp8for_fileERKN7helpers4pathE)

; 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"

%class.Timestamp = type { i64 }
%struct.stat = type { i64, i64, i64, i32, i32, i32, i32, i64, i64, i64, i64, %struct.timespec, %struct.timespec, %struct.timespec, [3 x i64] }
%struct.timespec = type { i64, i64 }

; Function Attrs: mustprogress uwtable
define dso_local i64 @_ZN9Timestamp8for_fileERKN7helpers4pathE(ptr noundef nonnull align 8 dereferenceable(32) %0) #0 align 2 {
  %2 = alloca %class.Timestamp, align 8
  %3 = alloca ptr, align 8
  %4 = alloca %struct.stat, align 8
  %5 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 144, ptr %4) #4
  %6 = load ptr, ptr %3, align 8, !tbaa !5
  %7 = call noundef nonnull align 8 dereferenceable(32) ptr @_ZNK7helpers4path3strB5cxx11Ev(ptr noundef nonnull align 8 dereferenceable(32) %6)
  %8 = call noundef ptr @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE5c_strEv(ptr noundef nonnull align 8 dereferenceable(32) %7) #4
  %9 = call i32 @stat(ptr noundef %8, ptr noundef %4) #4
  %10 = icmp eq i32 %9, 0
  br i1 %10, label %11, label %15

11:                                               ; preds = %1
  %12 = getelementptr inbounds %struct.stat, ptr %4, i32 0, i32 12
  %13 = getelementptr inbounds %struct.timespec, ptr %12, i32 0, i32 0
  %14 = load i64, ptr %13, align 8, !tbaa !9
  call void @_ZN9TimestampC2El(ptr noundef nonnull align 8 dereferenceable(8) %2, i64 noundef %14)
  store i32 1, ptr %5, align 4
  br label %18

15:                                               ; preds = %1
  %16 = call i64 @_ZN9Timestamp13infinite_pastEv()
  %17 = getelementptr inbounds %class.Timestamp, ptr %2, i32 0, i32 0
  store i64 %16, ptr %17, align 8
  store i32 1, ptr %5, align 4
  br label %18

18:                                               ; preds = %15, %11
  call void @llvm.lifetime.end.p0(i64 144, ptr %4) #4
  %19 = getelementptr inbounds %class.Timestamp, ptr %2, i32 0, i32 0
  %20 = load i64, ptr %19, align 8
  ret i64 %20
}

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

; Function Attrs: nounwind
declare i32 @stat(ptr noundef, ptr noundef) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(32) ptr @_ZNK7helpers4path3strB5cxx11Ev(ptr noundef nonnull align 8 dereferenceable(32)) #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare noundef ptr @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE5c_strEv(ptr noundef nonnull align 8 dereferenceable(32)) #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN9TimestampC2El(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local i64 @_ZN9Timestamp13infinite_pastEv() #0 align 2

; 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 = { nounwind "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 = { 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 #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, !11, i64 88}
!10 = !{!"_ZTS4stat", !11, i64 0, !11, i64 8, !11, i64 16, !12, i64 24, !12, i64 28, !12, i64 32, !12, i64 36, !11, i64 40, !11, i64 48, !11, i64 56, !11, i64 64, !13, i64 72, !13, i64 88, !13, i64 104, !7, i64 120}
!11 = !{!"long", !7, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = !{!"_ZTS8timespec", !11, i64 0, !11, 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"

%class.Timestamp = type { i64 }
%struct.stat = type { i64, i64, i64, i32, i32, i32, i32, i64, i64, i64, i64, %struct.timespec, %struct.timespec, %struct.timespec, [3 x i64] }
%struct.timespec = type { i64, i64 }

; Function Attrs: mustprogress uwtable
define dso_local i64 @_ZN9Timestamp8for_fileERKN7helpers4pathE(ptr noundef nonnull align 8 dereferenceable(32) %0) local_unnamed_addr #0 align 2 {
  %2 = alloca %class.Timestamp, align 8
  %3 = alloca %struct.stat, align 8
  call void @llvm.lifetime.start.p0(i64 144, ptr nonnull %3) #4
  %4 = tail call noundef nonnull align 8 dereferenceable(32) ptr @_ZNK7helpers4path3strB5cxx11Ev(ptr noundef nonnull align 8 dereferenceable(32) %0)
  %5 = tail call noundef ptr @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE5c_strEv(ptr noundef nonnull align 8 dereferenceable(32) %4) #4
  %6 = call i32 @stat(ptr noundef %5, ptr noundef nonnull %3) #4
  %7 = icmp eq i32 %6, 0
  br i1 %7, label %8, label %11

8:                                                ; preds = %1
  %9 = getelementptr inbounds i8, ptr %3, i64 88
  %10 = load i64, ptr %9, align 8, !tbaa !5
  call void @_ZN9TimestampC2El(ptr noundef nonnull align 8 dereferenceable(8) %2, i64 noundef %10)
  %.pre = load i64, ptr %2, align 8
  br label %13

11:                                               ; preds = %1
  %12 = tail call i64 @_ZN9Timestamp13infinite_pastEv()
  br label %13

13:                                               ; preds = %11, %8
  %14 = phi i64 [ %12, %11 ], [ %.pre, %8 ]
  call void @llvm.lifetime.end.p0(i64 144, ptr nonnull %3) #4
  ret i64 %14
}

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

; Function Attrs: nofree nounwind
declare noundef i32 @stat(ptr nocapture noundef readonly, ptr nocapture noundef) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(32) ptr @_ZNK7helpers4path3strB5cxx11Ev(ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare noundef ptr @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE5c_strEv(ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN9TimestampC2El(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local i64 @_ZN9Timestamp13infinite_pastEv() local_unnamed_addr #0 align 2

; Function Attrs: mustprogress 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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nofree nounwind "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 = { 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 #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, !7, i64 88}
!6 = !{!"_ZTS4stat", !7, i64 0, !7, i64 8, !7, i64 16, !10, i64 24, !10, i64 28, !10, i64 32, !10, i64 36, !7, i64 40, !7, i64 48, !7, i64 56, !7, i64 64, !11, i64 72, !11, i64 88, !11, i64 104, !8, i64 120}
!7 = !{!"long", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!"_ZTS8timespec", !7, i64 0, !7, i64 8}


; Effective O3 passes: DSEPass,EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,SROAPass,TailCallElimPass