; LLVM IR from WayneLin92/SSeqCpp :: thirdparty/fmt/test/posix-mock-test.ll (ZN4test5fopenEPKcS1_)

; 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"

@_ZN12_GLOBAL__N_111fopen_countE = external hidden global i32, align 4

; Function Attrs: nounwind willreturn memory(none)
declare ptr @__errno_location() #0

; Function Attrs: mustprogress uwtable
define dso_local noundef ptr @_ZN4test5fopenEPKcS1_(ptr noundef %0, ptr noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  %6 = load i32, ptr @_ZN12_GLOBAL__N_111fopen_countE, align 4, !tbaa !9
  %7 = icmp ne i32 %6, 0
  br i1 %7, label %8, label %15

8:                                                ; preds = %2
  %9 = load i32, ptr @_ZN12_GLOBAL__N_111fopen_countE, align 4, !tbaa !9
  %10 = add nsw i32 %9, 1
  store i32 %10, ptr @_ZN12_GLOBAL__N_111fopen_countE, align 4, !tbaa !9
  %11 = icmp ne i32 %9, 3
  br i1 %11, label %12, label %14

12:                                               ; preds = %8
  %13 = call ptr @__errno_location() #3
  store i32 4, ptr %13, align 4, !tbaa !9
  store ptr null, ptr %3, align 8
  br label %19

14:                                               ; preds = %8
  br label %15

15:                                               ; preds = %14, %2
  %16 = load ptr, ptr %4, align 8, !tbaa !5
  %17 = load ptr, ptr %5, align 8, !tbaa !5
  %18 = call noalias ptr @fopen(ptr noundef %16, ptr noundef %17)
  store ptr %18, ptr %3, align 8
  br label %19

19:                                               ; preds = %15, %12
  %20 = load ptr, ptr %3, align 8
  ret ptr %20
}

declare noalias ptr @fopen(ptr noundef, ptr noundef) #2

attributes #0 = { nounwind willreturn memory(none) "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 = { "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 willreturn memory(none) }

!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 = !{!"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"

@_ZN12_GLOBAL__N_111fopen_countE = external hidden local_unnamed_addr global i32, align 4

; Function Attrs: mustprogress nofree nosync nounwind willreturn memory(none)
declare ptr @__errno_location() local_unnamed_addr #0

; Function Attrs: mustprogress nofree nounwind uwtable
define dso_local noalias noundef ptr @_ZN4test5fopenEPKcS1_(ptr nocapture noundef readonly %0, ptr nocapture noundef readonly %1) local_unnamed_addr #1 {
  %3 = load i32, ptr @_ZN12_GLOBAL__N_111fopen_countE, align 4, !tbaa !5
  %.not = icmp eq i32 %3, 0
  br i1 %.not, label %8, label %4

4:                                                ; preds = %2
  %5 = add nsw i32 %3, 1
  store i32 %5, ptr @_ZN12_GLOBAL__N_111fopen_countE, align 4, !tbaa !5
  %.not4 = icmp eq i32 %3, 3
  br i1 %.not4, label %8, label %6

6:                                                ; preds = %4
  %7 = tail call ptr @__errno_location() #3
  store i32 4, ptr %7, align 4, !tbaa !5
  br label %10

8:                                                ; preds = %4, %2
  %9 = tail call noalias ptr @fopen(ptr noundef %0, ptr noundef %1)
  br label %10

10:                                               ; preds = %8, %6
  %.0 = phi ptr [ null, %6 ], [ %9, %8 ]
  ret ptr %.0
}

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

attributes #0 = { mustprogress nofree nosync nounwind willreturn memory(none) "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 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 willreturn memory(none) }

!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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}


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