; LLVM IR from Simple-XX/SimpleKernel :: src/libcxx/src (cxxabi)

; 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"

@__init_array_start = external global [0 x ptr], align 8
@__init_array_end = external global [0 x ptr], align 8

; Function Attrs: mustprogress uwtable
define dso_local void @cpp_init() #0 {
  %1 = alloca ptr, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %1) #2
  store ptr @__init_array_start, ptr %1, align 8, !tbaa !5
  br label %2

2:                                                ; preds = %8, %0
  %3 = load ptr, ptr %1, align 8, !tbaa !5
  %4 = icmp ult ptr %3, @__init_array_end
  br i1 %4, label %5, label %11

5:                                                ; preds = %2
  %6 = load ptr, ptr %1, align 8, !tbaa !5
  %7 = load ptr, ptr %6, align 8, !tbaa !5
  call void %7()
  br label %8

8:                                                ; preds = %5
  %9 = load ptr, ptr %1, align 8, !tbaa !5
  %10 = getelementptr inbounds ptr, ptr %9, i32 1
  store ptr %10, ptr %1, align 8, !tbaa !5
  br label %2, !llvm.loop !9

11:                                               ; preds = %2
  call void @llvm.lifetime.end.p0(i64 8, ptr %1) #2
  ret void
}

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

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

attributes #0 = { mustprogress 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 }

!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++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; 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"

@__init_array_start = external global [0 x ptr], align 8
@__init_array_end = external global [0 x ptr], align 8

; Function Attrs: mustprogress uwtable
define dso_local void @cpp_init() local_unnamed_addr #0 {
  %1 = icmp ult ptr @__init_array_start, @__init_array_end
  br i1 %1, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %0, %.lr.ph
  %.03 = phi ptr [ %3, %.lr.ph ], [ @__init_array_start, %0 ]
  %2 = load ptr, ptr %.03, align 8, !tbaa !5
  tail call void %2()
  %3 = getelementptr inbounds i8, ptr %.03, i64 8
  %4 = icmp ult ptr %3, @__init_array_end
  br i1 %4, label %.lr.ph, label %._crit_edge, !llvm.loop !9

._crit_edge:                                      ; preds = %.lr.ph, %0
  ret void
}

attributes #0 = { mustprogress 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, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass