; LLVM IR from ohler55/agoo :: ext/agoo (err)

; 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 = external hidden unnamed_addr constant [12 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [12 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [17 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [10 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [14 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [11 x i8], align 1
@.str.8 = external hidden unnamed_addr constant [14 x i8], align 1
@.str.9 = external hidden unnamed_addr constant [7 x i8], align 1
@.str.10 = external hidden unnamed_addr constant [9 x i8], align 1
@.str.11 = external hidden unnamed_addr constant [11 x i8], align 1
@.str.12 = external hidden unnamed_addr constant [11 x i8], align 1
@.str.13 = external hidden unnamed_addr constant [10 x i8], align 1
@.str.14 = external hidden unnamed_addr constant [14 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
declare ptr @strerror(i32 noundef) #1

; Function Attrs: nounwind uwtable
define dso_local ptr @agoo_err_str(i32 noundef %0) #2 {
  %2 = alloca i32, align 4
  %3 = alloca ptr, align 8
  store i32 %0, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  store ptr null, ptr %3, align 8, !tbaa !9
  %4 = load i32, ptr %2, align 4, !tbaa !5
  %5 = icmp ult i32 %4, 300
  br i1 %5, label %6, label %9

6:                                                ; preds = %1
  %7 = load i32, ptr %2, align 4, !tbaa !5
  %8 = call ptr @strerror(i32 noundef %7) #3
  store ptr %8, ptr %3, align 8, !tbaa !9
  br label %9

9:                                                ; preds = %6, %1
  %10 = load ptr, ptr %3, align 8, !tbaa !9
  %11 = icmp eq ptr null, %10
  br i1 %11, label %12, label %30

12:                                               ; preds = %9
  %13 = load i32, ptr %2, align 4, !tbaa !5
  switch i32 %13, label %28 [
    i32 300, label %14
    i32 301, label %15
    i32 302, label %16
    i32 304, label %17
    i32 305, label %18
    i32 306, label %19
    i32 307, label %20
    i32 308, label %21
    i32 309, label %22
    i32 310, label %23
    i32 311, label %24
    i32 312, label %25
    i32 313, label %26
    i32 314, label %27
  ]

14:                                               ; preds = %12
  store ptr @.str, ptr %3, align 8, !tbaa !9
  br label %29

15:                                               ; preds = %12
  store ptr @.str.1, ptr %3, align 8, !tbaa !9
  br label %29

16:                                               ; preds = %12
  store ptr @.str.2, ptr %3, align 8, !tbaa !9
  br label %29

17:                                               ; preds = %12
  store ptr @.str.3, ptr %3, align 8, !tbaa !9
  br label %29

18:                                               ; preds = %12
  store ptr @.str.4, ptr %3, align 8, !tbaa !9
  br label %29

19:                                               ; preds = %12
  store ptr @.str.5, ptr %3, align 8, !tbaa !9
  br label %29

20:                                               ; preds = %12
  store ptr @.str.6, ptr %3, align 8, !tbaa !9
  br label %29

21:                                               ; preds = %12
  store ptr @.str.7, ptr %3, align 8, !tbaa !9
  br label %29

22:                                               ; preds = %12
  store ptr @.str.8, ptr %3, align 8, !tbaa !9
  br label %29

23:                                               ; preds = %12
  store ptr @.str.9, ptr %3, align 8, !tbaa !9
  br label %29

24:                                               ; preds = %12
  store ptr @.str.10, ptr %3, align 8, !tbaa !9
  br label %29

25:                                               ; preds = %12
  store ptr @.str.11, ptr %3, align 8, !tbaa !9
  br label %29

26:                                               ; preds = %12
  store ptr @.str.12, ptr %3, align 8, !tbaa !9
  br label %29

27:                                               ; preds = %12
  store ptr @.str.13, ptr %3, align 8, !tbaa !9
  br label %29

28:                                               ; preds = %12
  store ptr @.str.14, ptr %3, align 8, !tbaa !9
  br label %29

29:                                               ; preds = %28, %27, %26, %25, %24, %23, %22, %21, %20, %19, %18, %17, %16, %15, %14
  br label %30

30:                                               ; preds = %29, %9
  %31 = load ptr, ptr %3, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  ret ptr %31
}

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

!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"

@.str = external hidden unnamed_addr constant [12 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [12 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [17 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [10 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [14 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [11 x i8], align 1
@.str.8 = external hidden unnamed_addr constant [14 x i8], align 1
@.str.9 = external hidden unnamed_addr constant [7 x i8], align 1
@.str.10 = external hidden unnamed_addr constant [9 x i8], align 1
@.str.11 = external hidden unnamed_addr constant [11 x i8], align 1
@.str.12 = external hidden unnamed_addr constant [11 x i8], align 1
@.str.13 = external hidden unnamed_addr constant [10 x i8], align 1
@.str.14 = external hidden unnamed_addr constant [14 x i8], align 1
@switch.table.agoo_err_str = private unnamed_addr constant [15 x ptr] [ptr @.str, ptr @.str.1, ptr @.str.2, ptr @.str.14, ptr @.str.3, ptr @.str.4, ptr @.str.5, ptr @.str.6, ptr @.str.7, ptr @.str.8, ptr @.str.9, ptr @.str.10, ptr @.str.11, ptr @.str.12, ptr @.str.13], align 8

; Function Attrs: nounwind
declare ptr @strerror(i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local nonnull ptr @agoo_err_str(i32 noundef %0) local_unnamed_addr #1 {
  %2 = icmp ult i32 %0, 300
  br i1 %2, label %3, label %.thread

3:                                                ; preds = %1
  %4 = tail call ptr @strerror(i32 noundef %0) #2
  %5 = icmp eq ptr %4, null
  br i1 %5, label %.thread, label %8

.thread:                                          ; preds = %1, %3
  %switch.tableidx = add i32 %0, -300
  %6 = icmp ult i32 %switch.tableidx, 15
  br i1 %6, label %switch.lookup, label %8

switch.lookup:                                    ; preds = %.thread
  %7 = zext nneg i32 %switch.tableidx to i64
  %switch.gep = getelementptr inbounds [15 x ptr], ptr @switch.table.agoo_err_str, i64 0, i64 %7
  %switch.load = load ptr, ptr %switch.gep, align 8
  br label %8

8:                                                ; preds = %.thread, %switch.lookup, %3
  %.1 = phi ptr [ %4, %3 ], [ %switch.load, %switch.lookup ], [ @.str.14, %.thread ]
  ret ptr %.1
}

attributes #0 = { 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 #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 = { 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)"}


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