; LLVM IR from clausecker/24puzzle :: pdb (pdb_allocate)

; 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.patterndb = type { %struct.index_aux, i32, ptr, [16 x i8] }
%struct.index_aux = type { [32 x i8], [16 x i8], i32, i32, i32, i32, i32, ptr, [16 x i8] }

; Function Attrs: nounwind uwtable
declare dso_local ptr @pdb_dummy(i32 noundef) #0

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

; Function Attrs: nounwind uwtable
define dso_local ptr @pdb_allocate(i32 noundef %0) #0 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  store i32 %0, ptr %3, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #6
  %7 = load i32, ptr %3, align 4, !tbaa !5
  %8 = call ptr @pdb_dummy(i32 noundef %7)
  store ptr %8, ptr %4, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #6
  %9 = load ptr, ptr %4, align 8, !tbaa !9
  %10 = icmp eq ptr %9, null
  br i1 %10, label %11, label %12

11:                                               ; preds = %1
  store ptr null, ptr %2, align 8
  store i32 1, ptr %6, align 4
  br label %31

12:                                               ; preds = %1
  %13 = load ptr, ptr %4, align 8, !tbaa !9
  %14 = getelementptr inbounds %struct.patterndb, ptr %13, i32 0, i32 0
  %15 = call i64 @search_space_size(ptr noundef %14)
  %16 = call noalias ptr @malloc(i64 noundef %15) #7
  %17 = load ptr, ptr %4, align 8, !tbaa !9
  %18 = getelementptr inbounds %struct.patterndb, ptr %17, i32 0, i32 2
  store ptr %16, ptr %18, align 8, !tbaa !11
  %19 = load ptr, ptr %4, align 8, !tbaa !9
  %20 = getelementptr inbounds %struct.patterndb, ptr %19, i32 0, i32 2
  %21 = load ptr, ptr %20, align 8, !tbaa !11
  %22 = icmp eq ptr %21, null
  br i1 %22, label %23, label %29

23:                                               ; preds = %12
  %24 = call ptr @__errno_location() #8
  %25 = load i32, ptr %24, align 4, !tbaa !5
  store i32 %25, ptr %5, align 4, !tbaa !5
  %26 = load ptr, ptr %4, align 8, !tbaa !9
  call void @free(ptr noundef %26) #6
  %27 = load i32, ptr %5, align 4, !tbaa !5
  %28 = call ptr @__errno_location() #8
  store i32 %27, ptr %28, align 4, !tbaa !5
  store ptr null, ptr %2, align 8
  store i32 1, ptr %6, align 4
  br label %31

29:                                               ; preds = %12
  %30 = load ptr, ptr %4, align 8, !tbaa !9
  store ptr %30, ptr %2, align 8
  store i32 1, ptr %6, align 4
  br label %31

31:                                               ; preds = %29, %23, %11
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #6
  %32 = load ptr, ptr %2, align 8
  ret ptr %32
}

; Function Attrs: inlinehint nounwind uwtable
declare hidden i64 @search_space_size(ptr noundef) #3

; Function Attrs: nounwind willreturn memory(none)
declare ptr @__errno_location() #4

; Function Attrs: nounwind
declare void @free(ptr noundef) #5

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 = { inlinehint 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 #4 = { 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 #5 = { 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 #6 = { nounwind }
attributes #7 = { nounwind allocsize(0) }
attributes #8 = { 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/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !10, i64 104}
!12 = !{!"patterndb", !13, i64 0, !6, i64 96, !10, i64 104}
!13 = !{!"index_aux", !7, i64 0, !7, i64 32, !6, i64 48, !6, i64 52, !6, i64 56, !6, i64 60, !6, i64 64, !10, i64 72}


; 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: nounwind uwtable
declare dso_local ptr @pdb_dummy(i32 noundef) local_unnamed_addr #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: nounwind uwtable
define dso_local ptr @pdb_allocate(i32 noundef %0) local_unnamed_addr #0 {
  %2 = tail call ptr @pdb_dummy(i32 noundef %0)
  %3 = icmp eq ptr %2, null
  br i1 %3, label %12, label %4

4:                                                ; preds = %1
  %5 = tail call i64 @search_space_size(ptr noundef nonnull %2)
  %6 = tail call noalias ptr @malloc(i64 noundef %5) #5
  %7 = getelementptr inbounds i8, ptr %2, i64 104
  store ptr %6, ptr %7, align 8, !tbaa !5
  %8 = icmp eq ptr %6, null
  br i1 %8, label %9, label %12

9:                                                ; preds = %4
  %10 = tail call ptr @__errno_location() #6
  %11 = load i32, ptr %10, align 4, !tbaa !12
  tail call void @free(ptr noundef nonnull %2) #7
  store i32 %11, ptr %10, align 4, !tbaa !12
  br label %12

12:                                               ; preds = %4, %1, %9
  %.0 = phi ptr [ null, %9 ], [ null, %1 ], [ %2, %4 ]
  ret ptr %.0
}

; Function Attrs: inlinehint nounwind uwtable
declare hidden i64 @search_space_size(ptr noundef) local_unnamed_addr #2

; Function Attrs: mustprogress nofree nosync nounwind willreturn memory(none)
declare ptr @__errno_location() local_unnamed_addr #3

; Function Attrs: mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite)
declare void @free(ptr allocptr nocapture noundef) local_unnamed_addr #4

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 = { 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 = { inlinehint 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 = { 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 #4 = { 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 #5 = { nounwind allocsize(0) }
attributes #6 = { nounwind willreturn memory(none) }
attributes #7 = { 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, !11, i64 104}
!6 = !{!"patterndb", !7, i64 0, !10, i64 96, !11, i64 104}
!7 = !{!"index_aux", !8, i64 0, !8, i64 32, !10, i64 48, !10, i64 52, !10, i64 56, !10, i64 60, !10, i64 64, !11, i64 72}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!"any pointer", !8, i64 0}
!12 = !{!10, !10, i64 0}


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