; LLVM IR from erincatto/box2d :: src (id_pool)

; 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.b2IdPool = type { %struct.b2IntArray, i32 }
%struct.b2IntArray = type { ptr, i32, i32 }

; 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 uwtable
define dso_local i32 @b2AllocId(ptr noundef %0) #1 {
  %2 = alloca i32, align 4
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  %8 = load ptr, ptr %3, align 8, !tbaa !5
  %9 = getelementptr inbounds %struct.b2IdPool, ptr %8, i32 0, i32 0
  %10 = getelementptr inbounds %struct.b2IntArray, ptr %9, i32 0, i32 1
  %11 = load i32, ptr %10, align 8, !tbaa !9
  store i32 %11, ptr %4, align 4, !tbaa !13
  %12 = load i32, ptr %4, align 4, !tbaa !13
  %13 = icmp sgt i32 %12, 0
  br i1 %13, label %14, label %19

14:                                               ; preds = %1
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  %15 = load ptr, ptr %3, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.b2IdPool, ptr %15, i32 0, i32 0
  %17 = call i32 @b2IntArray_Pop(ptr noundef %16)
  store i32 %17, ptr %5, align 4, !tbaa !13
  %18 = load i32, ptr %5, align 4, !tbaa !13
  store i32 %18, ptr %2, align 4
  store i32 1, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  br label %28

19:                                               ; preds = %1
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  %20 = load ptr, ptr %3, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct.b2IdPool, ptr %20, i32 0, i32 1
  %22 = load i32, ptr %21, align 8, !tbaa !14
  store i32 %22, ptr %7, align 4, !tbaa !13
  %23 = load ptr, ptr %3, align 8, !tbaa !5
  %24 = getelementptr inbounds %struct.b2IdPool, ptr %23, i32 0, i32 1
  %25 = load i32, ptr %24, align 8, !tbaa !14
  %26 = add nsw i32 %25, 1
  store i32 %26, ptr %24, align 8, !tbaa !14
  %27 = load i32, ptr %7, align 4, !tbaa !13
  store i32 %27, ptr %2, align 4
  store i32 1, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  br label %28

28:                                               ; preds = %19, %14
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  %29 = load i32, ptr %2, align 4
  ret i32 %29
}

; Function Attrs: inlinehint nounwind uwtable
declare hidden i32 @b2IntArray_Pop(ptr noundef) #2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 = { 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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !12, i64 8}
!10 = !{!"b2IdPool", !11, i64 0, !12, i64 16}
!11 = !{!"", !6, i64 0, !12, i64 8, !12, i64 12}
!12 = !{!"int", !7, i64 0}
!13 = !{!12, !12, i64 0}
!14 = !{!10, !12, i64 16}


; 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
define dso_local i32 @b2AllocId(ptr noundef %0) local_unnamed_addr #0 {
  %2 = getelementptr inbounds i8, ptr %0, i64 8
  %3 = load i32, ptr %2, align 8, !tbaa !5
  %4 = icmp sgt i32 %3, 0
  br i1 %4, label %5, label %7

5:                                                ; preds = %1
  %6 = tail call i32 @b2IntArray_Pop(ptr noundef nonnull %0)
  br label %11

7:                                                ; preds = %1
  %8 = getelementptr inbounds i8, ptr %0, i64 16
  %9 = load i32, ptr %8, align 8, !tbaa !12
  %10 = add nsw i32 %9, 1
  store i32 %10, ptr %8, align 8, !tbaa !12
  br label %11

11:                                               ; preds = %7, %5
  %.0 = phi i32 [ %6, %5 ], [ %9, %7 ]
  ret i32 %.0
}

; Function Attrs: inlinehint nounwind uwtable
declare hidden i32 @b2IntArray_Pop(ptr noundef) local_unnamed_addr #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 = { 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" }

!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 8}
!6 = !{!"b2IdPool", !7, i64 0, !11, i64 16}
!7 = !{!"", !8, i64 0, !11, i64 8, !11, i64 12}
!8 = !{!"any pointer", !9, i64 0}
!9 = !{!"omnipotent char", !10, i64 0}
!10 = !{!"Simple C/C++ TBAA"}
!11 = !{!"int", !9, i64 0}
!12 = !{!6, !11, i64 16}


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