; LLVM IR from Softmotions/iowow :: src/utils (iwxstr)

; 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.iwxstr = type { ptr, i64, i64, ptr, ptr }

; Function Attrs: nounwind uwtable
define dso_local ptr @iwxstr_create(i64 noundef %0) #0 {
  %2 = alloca ptr, align 8
  %3 = alloca i64, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  store i64 %0, ptr %3, align 8, !tbaa !5
  %6 = load i64, ptr %3, align 8, !tbaa !5
  %7 = icmp ne i64 %6, 0
  br i1 %7, label %9, label %8

8:                                                ; preds = %1
  store i64 16, ptr %3, align 8, !tbaa !5
  br label %9

9:                                                ; preds = %8, %1
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #4
  %10 = call noalias ptr @malloc(i64 noundef 40) #5
  store ptr %10, ptr %4, align 8, !tbaa !9
  %11 = load ptr, ptr %4, align 8, !tbaa !9
  %12 = icmp ne ptr %11, null
  br i1 %12, label %14, label %13

13:                                               ; preds = %9
  store ptr null, ptr %2, align 8
  store i32 1, ptr %5, align 4
  br label %40

14:                                               ; preds = %9
  %15 = load i64, ptr %3, align 8, !tbaa !5
  %16 = call noalias ptr @malloc(i64 noundef %15) #5
  %17 = load ptr, ptr %4, align 8, !tbaa !9
  %18 = getelementptr inbounds %struct.iwxstr, ptr %17, i32 0, i32 0
  store ptr %16, ptr %18, align 8, !tbaa !11
  %19 = load ptr, ptr %4, align 8, !tbaa !9
  %20 = getelementptr inbounds %struct.iwxstr, ptr %19, i32 0, i32 0
  %21 = load ptr, ptr %20, align 8, !tbaa !11
  %22 = icmp ne ptr %21, null
  br i1 %22, label %25, label %23

23:                                               ; preds = %14
  %24 = load ptr, ptr %4, align 8, !tbaa !9
  call void @free(ptr noundef %24) #4
  store ptr null, ptr %2, align 8
  store i32 1, ptr %5, align 4
  br label %40

25:                                               ; preds = %14
  %26 = load ptr, ptr %4, align 8, !tbaa !9
  %27 = getelementptr inbounds %struct.iwxstr, ptr %26, i32 0, i32 4
  store ptr null, ptr %27, align 8, !tbaa !13
  %28 = load ptr, ptr %4, align 8, !tbaa !9
  %29 = getelementptr inbounds %struct.iwxstr, ptr %28, i32 0, i32 3
  store ptr null, ptr %29, align 8, !tbaa !14
  %30 = load ptr, ptr %4, align 8, !tbaa !9
  %31 = getelementptr inbounds %struct.iwxstr, ptr %30, i32 0, i32 1
  store i64 0, ptr %31, align 8, !tbaa !15
  %32 = load i64, ptr %3, align 8, !tbaa !5
  %33 = load ptr, ptr %4, align 8, !tbaa !9
  %34 = getelementptr inbounds %struct.iwxstr, ptr %33, i32 0, i32 2
  store i64 %32, ptr %34, align 8, !tbaa !16
  %35 = load ptr, ptr %4, align 8, !tbaa !9
  %36 = getelementptr inbounds %struct.iwxstr, ptr %35, i32 0, i32 0
  %37 = load ptr, ptr %36, align 8, !tbaa !11
  %38 = getelementptr inbounds i8, ptr %37, i64 0
  store i8 0, ptr %38, align 1, !tbaa !17
  %39 = load ptr, ptr %4, align 8, !tbaa !9
  store ptr %39, ptr %2, align 8
  store i32 1, ptr %5, align 4
  br label %40

40:                                               ; preds = %25, %23, %13
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #4
  %41 = load ptr, ptr %2, align 8
  ret ptr %41
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind allocsize(0)
declare noalias ptr @malloc(i64 noundef) #2

; Function Attrs: nounwind
declare void @free(ptr noundef) #3

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nounwind allocsize(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 }
attributes #5 = { nounwind allocsize(0) }

!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 = !{!"long", !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}
!11 = !{!12, !10, i64 0}
!12 = !{!"iwxstr", !10, i64 0, !6, i64 8, !6, i64 16, !10, i64 24, !10, i64 32}
!13 = !{!12, !10, i64 32}
!14 = !{!12, !10, i64 24}
!15 = !{!12, !6, i64 8}
!16 = !{!12, !6, i64 16}
!17 = !{!7, !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"

; Function Attrs: mustprogress nounwind willreturn memory(readwrite, argmem: none) uwtable
define dso_local noalias noundef ptr @iwxstr_create(i64 noundef %0) local_unnamed_addr #0 {
  %.not = icmp eq i64 %0, 0
  %spec.store.select = select i1 %.not, i64 16, i64 %0
  %2 = tail call noalias dereferenceable_or_null(40) ptr @malloc(i64 noundef 40) #4
  %.not14 = icmp eq ptr %2, null
  br i1 %.not14, label %10, label %3

3:                                                ; preds = %1
  %4 = tail call noalias ptr @malloc(i64 noundef %spec.store.select) #4
  store ptr %4, ptr %2, align 8, !tbaa !5
  %.not15 = icmp eq ptr %4, null
  br i1 %.not15, label %5, label %6

5:                                                ; preds = %3
  tail call void @free(ptr noundef nonnull %2) #5
  br label %10

6:                                                ; preds = %3
  %7 = getelementptr inbounds i8, ptr %2, i64 24
  %8 = getelementptr inbounds i8, ptr %2, i64 8
  store i64 0, ptr %8, align 8, !tbaa !11
  %9 = getelementptr inbounds i8, ptr %2, i64 16
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) %7, i8 0, i64 16, i1 false)
  store i64 %spec.store.select, ptr %9, align 8, !tbaa !12
  store i8 0, ptr %4, align 1, !tbaa !13
  br label %10

10:                                               ; preds = %1, %6, %5
  %.0 = phi ptr [ %2, %6 ], [ null, %5 ], [ null, %1 ]
  ret ptr %.0
}

; Function Attrs: mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite)
declare noalias noundef ptr @malloc(i64 noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite)
declare void @free(ptr allocptr nocapture noundef) local_unnamed_addr #2

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #3

attributes #0 = { mustprogress nounwind willreturn memory(readwrite, argmem: none) 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 = { mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite) "alloc-family"="malloc" "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 = { mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite) "alloc-family"="malloc" "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 = { nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #4 = { nounwind allocsize(0) }
attributes #5 = { 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, !7, i64 0}
!6 = !{!"iwxstr", !7, i64 0, !10, i64 8, !10, i64 16, !7, i64 24, !7, i64 32}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"long", !8, i64 0}
!11 = !{!6, !10, i64 8}
!12 = !{!6, !10, i64 16}
!13 = !{!8, !8, i64 0}


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