; LLVM IR from pmwkaa/monotone :: monotone/runtime/runtime (vfs)

; 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.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: 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: nocallback nofree nosync nounwind willreturn memory(none)
declare i64 @llvm.expect.i64(i64, i64) #1

; Function Attrs: nounwind uwtable
define dso_local i64 @vfs_size(ptr noundef %0) #2 {
  %2 = alloca i64, align 8
  %3 = alloca ptr, align 8
  %4 = alloca %struct.stat, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 144, ptr %4) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #4
  %7 = load ptr, ptr %3, align 8, !tbaa !5
  %8 = call i32 @lstat(ptr noundef %7, ptr noundef %4) #4
  store i32 %8, ptr %5, align 4, !tbaa !9
  %9 = load i32, ptr %5, align 4, !tbaa !9
  %10 = icmp eq i32 %9, -1
  %11 = xor i1 %10, true
  %12 = xor i1 %11, true
  %13 = zext i1 %12 to i32
  %14 = sext i32 %13 to i64
  %15 = call i64 @llvm.expect.i64(i64 %14, i64 0)
  %16 = icmp ne i64 %15, 0
  br i1 %16, label %17, label %18

17:                                               ; preds = %1
  store i64 -1, ptr %2, align 8
  store i32 1, ptr %6, align 4
  br label %21

18:                                               ; preds = %1
  %19 = getelementptr inbounds %struct.stat, ptr %4, i32 0, i32 8
  %20 = load i64, ptr %19, align 8, !tbaa !11
  store i64 %20, ptr %2, align 8
  store i32 1, ptr %6, align 4
  br label %21

21:                                               ; preds = %18, %17
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #4
  call void @llvm.lifetime.end.p0(i64 144, ptr %4) #4
  %22 = load i64, ptr %2, align 8
  ret i64 %22
}

; Function Attrs: nounwind
declare i32 @lstat(ptr noundef, ptr noundef) #3

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nocallback nofree nosync nounwind willreturn memory(none) }
attributes #2 = { 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 = { 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 #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/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !13, i64 48}
!12 = !{!"stat", !13, i64 0, !13, i64 8, !13, i64 16, !10, i64 24, !10, i64 28, !10, i64 32, !10, i64 36, !13, i64 40, !13, i64 48, !13, i64 56, !13, i64 64, !14, i64 72, !14, i64 88, !14, i64 104, !7, i64 120}
!13 = !{!"long", !7, i64 0}
!14 = !{!"timespec", !13, i64 0, !13, 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"

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

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

; Function Attrs: nofree nounwind uwtable
define dso_local i64 @vfs_size(ptr nocapture noundef readonly %0) local_unnamed_addr #1 {
  %2 = alloca %struct.stat, align 8
  call void @llvm.lifetime.start.p0(i64 144, ptr nonnull %2) #3
  %3 = call i32 @lstat(ptr noundef %0, ptr noundef nonnull %2) #3
  %4 = icmp eq i32 %3, -1
  %5 = getelementptr inbounds i8, ptr %2, i64 48
  %6 = load i64, ptr %5, align 8
  %.0 = select i1 %4, i64 -1, i64 %6, !prof !5
  call void @llvm.lifetime.end.p0(i64 144, ptr nonnull %2) #3
  ret i64 %.0
}

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

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nofree 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 = { 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 = { 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 = !{!"branch_weights", !"expected", i32 1, i32 2000}


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