; LLVM IR from wgtdkp/wgtcc :: test (extern)

; 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"

@a = external dso_local global i32, align 4
@stderr = external global ptr, align 8
@.str = external hidden unnamed_addr constant [34 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [60 x i8], align 1
@__func__.test = external hidden unnamed_addr constant [5 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local void @test() #0 {
  %1 = alloca i32, align 4
  %2 = load i32, ptr @a, align 4, !tbaa !5
  %3 = icmp ne i32 %2, 3
  br i1 %3, label %4, label %8

4:                                                ; preds = %0
  %5 = load ptr, ptr @stderr, align 8, !tbaa !9
  %6 = load i32, ptr @a, align 4, !tbaa !5
  %7 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %5, ptr noundef @.str, ptr noundef @.str.1, ptr noundef @__func__.test, i32 noundef 8, i32 noundef %6, i32 noundef 3) #3
  br label %8

8:                                                ; preds = %4, %0
  call void @llvm.lifetime.start.p0(i64 4, ptr %1) #3
  store i32 4, ptr %1, align 4, !tbaa !5
  %9 = load i32, ptr %1, align 4, !tbaa !5
  %10 = icmp ne i32 %9, 4
  br i1 %10, label %11, label %15

11:                                               ; preds = %8
  %12 = load ptr, ptr @stderr, align 8, !tbaa !9
  %13 = load i32, ptr %1, align 4, !tbaa !5
  %14 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %12, ptr noundef @.str, ptr noundef @.str.1, ptr noundef @__func__.test, i32 noundef 11, i32 noundef %13, i32 noundef 4) #3
  br label %15

15:                                               ; preds = %11, %8
  call void @llvm.lifetime.end.p0(i64 4, ptr %1) #3
  %16 = load i32, ptr @a, align 4, !tbaa !5
  %17 = icmp ne i32 %16, 3
  br i1 %17, label %18, label %22

18:                                               ; preds = %15
  %19 = load ptr, ptr @stderr, align 8, !tbaa !9
  %20 = load i32, ptr @a, align 4, !tbaa !5
  %21 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %19, ptr noundef @.str, ptr noundef @.str.1, ptr noundef @__func__.test, i32 noundef 15, i32 noundef %20, i32 noundef 3) #3
  br label %22

22:                                               ; preds = %18, %15
  store i32 5, ptr @a, align 4, !tbaa !5
  %23 = load i32, ptr @a, align 4, !tbaa !5
  %24 = icmp ne i32 %23, 5
  br i1 %24, label %25, label %29

25:                                               ; preds = %22
  %26 = load ptr, ptr @stderr, align 8, !tbaa !9
  %27 = load i32, ptr @a, align 4, !tbaa !5
  %28 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %26, ptr noundef @.str, ptr noundef @.str.1, ptr noundef @__func__.test, i32 noundef 19, i32 noundef %27, i32 noundef 5) #3
  br label %29

29:                                               ; preds = %25, %22
  ret void
}

; Function Attrs: nounwind
declare i32 @fprintf(ptr noundef, ptr noundef, ...) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

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 = { 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 #2 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !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"

@a = external dso_local local_unnamed_addr global i32, align 4
@stderr = external local_unnamed_addr global ptr, align 8
@.str = external hidden unnamed_addr constant [34 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [60 x i8], align 1
@__func__.test = external hidden unnamed_addr constant [5 x i8], align 1

; Function Attrs: nofree nounwind uwtable
define dso_local void @test() local_unnamed_addr #0 {
  %1 = load i32, ptr @a, align 4, !tbaa !5
  %.not = icmp eq i32 %1, 3
  br i1 %.not, label %.thread, label %2

2:                                                ; preds = %0
  %3 = load ptr, ptr @stderr, align 8, !tbaa !9
  %4 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %3, ptr noundef nonnull @.str, ptr noundef nonnull @.str.1, ptr noundef nonnull @__func__.test, i32 noundef 8, i32 noundef %1, i32 noundef 3) #2
  %.pr = load i32, ptr @a, align 4, !tbaa !5
  %.not3 = icmp eq i32 %.pr, 3
  br i1 %.not3, label %.thread, label %5

5:                                                ; preds = %2
  %6 = load ptr, ptr @stderr, align 8, !tbaa !9
  %7 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %6, ptr noundef nonnull @.str, ptr noundef nonnull @.str.1, ptr noundef nonnull @__func__.test, i32 noundef 15, i32 noundef %.pr, i32 noundef 3) #2
  br label %.thread

.thread:                                          ; preds = %0, %5, %2
  store i32 5, ptr @a, align 4, !tbaa !5
  ret void
}

; Function Attrs: nofree nounwind
declare noundef i32 @fprintf(ptr nocapture noundef, ptr nocapture noundef readonly, ...) local_unnamed_addr #1

attributes #0 = { 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 #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" }
attributes #2 = { cold 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}


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