; LLVM IR from jingweizhanghuai/Morn :: src/util (morn_universal)

; 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"

@.str.1 = external hidden unnamed_addr constant [81 x i8], align 1
@__FUNCTION__.fsize = external hidden unnamed_addr constant [6 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [13 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

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

; Function Attrs: nounwind uwtable
declare dso_local void @m_Exception(i32 noundef, i32 noundef, ptr noundef, i32 noundef, ptr noundef, ptr noundef, ...) #1

; Function Attrs: nounwind uwtable
define dso_local i32 @fsize(ptr noundef %0) #1 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  br label %6

6:                                                ; preds = %1
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  %7 = load ptr, ptr %2, align 8, !tbaa !5
  %8 = icmp eq ptr %7, null
  %9 = zext i1 %8 to i32
  store i32 %9, ptr %3, align 4, !tbaa !9
  %10 = load i32, ptr %3, align 4, !tbaa !9
  %11 = icmp ne i32 %10, 0
  br i1 %11, label %12, label %14

12:                                               ; preds = %6
  %13 = load i32, ptr %3, align 4, !tbaa !9
  call void (i32, i32, ptr, i32, ptr, ptr, ...) @m_Exception(i32 noundef %13, i32 noundef -1, ptr noundef @.str.1, i32 noundef 416, ptr noundef @__FUNCTION__.fsize, ptr noundef @.str.4)
  br label %14

14:                                               ; preds = %12, %6
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  br label %15

15:                                               ; preds = %14
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  %16 = load ptr, ptr %2, align 8, !tbaa !5
  %17 = call i64 @ftell(ptr noundef %16)
  %18 = trunc i64 %17 to i32
  store i32 %18, ptr %4, align 4, !tbaa !9
  %19 = load ptr, ptr %2, align 8, !tbaa !5
  %20 = call i32 @fseek(ptr noundef %19, i64 noundef 0, i32 noundef 2)
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  %21 = load ptr, ptr %2, align 8, !tbaa !5
  %22 = call i64 @ftell(ptr noundef %21)
  %23 = load i32, ptr %4, align 4, !tbaa !9
  %24 = sext i32 %23 to i64
  %25 = sub nsw i64 %22, %24
  %26 = trunc i64 %25 to i32
  store i32 %26, ptr %5, align 4, !tbaa !9
  %27 = load ptr, ptr %2, align 8, !tbaa !5
  %28 = load i32, ptr %4, align 4, !tbaa !9
  %29 = sext i32 %28 to i64
  %30 = call i32 @fseek(ptr noundef %27, i64 noundef %29, i32 noundef 0)
  %31 = load i32, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  ret i32 %31
}

declare i64 @ftell(ptr noundef) #2

declare i32 @fseek(ptr noundef, i64 noundef, i32 noundef) #2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 = { "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 = !{!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}


; 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"

@.str.1 = external hidden unnamed_addr constant [81 x i8], align 1
@__FUNCTION__.fsize = external hidden unnamed_addr constant [6 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [13 x i8], align 1

; Function Attrs: nounwind uwtable
declare dso_local void @m_Exception(i32 noundef, i32 noundef, ptr noundef, i32 noundef, ptr noundef, ptr noundef, ...) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local noundef i32 @fsize(ptr noundef %0) local_unnamed_addr #0 {
  %2 = icmp eq ptr %0, null
  br i1 %2, label %3, label %4

3:                                                ; preds = %1
  tail call void (i32, i32, ptr, i32, ptr, ptr, ...) @m_Exception(i32 noundef 1, i32 noundef -1, ptr noundef nonnull @.str.1, i32 noundef 416, ptr noundef nonnull @__FUNCTION__.fsize, ptr noundef nonnull @.str.4)
  br label %4

4:                                                ; preds = %3, %1
  %5 = tail call i64 @ftell(ptr noundef %0)
  %6 = tail call i32 @fseek(ptr noundef %0, i64 noundef 0, i32 noundef 2)
  %7 = tail call i64 @ftell(ptr noundef %0)
  %sext = shl i64 %5, 32
  %8 = ashr exact i64 %sext, 32
  %9 = sub i64 %7, %5
  %10 = trunc i64 %9 to i32
  %11 = tail call i32 @fseek(ptr noundef %0, i64 noundef %8, i32 noundef 0)
  ret i32 %10
}

; Function Attrs: nofree nounwind
declare noundef i64 @ftell(ptr nocapture noundef) local_unnamed_addr #1

; Function Attrs: nofree nounwind
declare noundef i32 @fseek(ptr nocapture noundef, i64 noundef, i32 noundef) local_unnamed_addr #1

attributes #0 = { 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 #1 = { 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" }

!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)"}


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