; LLVM IR from facebook/redex :: libredex/ThreadPool.ll (ZN17redex_thread_pool10ThreadPool6createEv)

; 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"

@_ZN12_GLOBAL__N_112s_threadpoolE = external hidden global ptr, align 8

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN17redex_thread_pool10ThreadPool6createEv() #0 align 2 personality ptr @__gxx_personality_v0 {
  %1 = alloca ptr, align 8
  %2 = alloca i32, align 4
  %3 = call noalias noundef nonnull ptr @_Znwm(i64 noundef 312) #5
  call void @llvm.memset.p0.i64(ptr align 16 %3, i8 0, i64 312, i1 false)
  invoke void @_ZN17redex_thread_pool10ThreadPoolC2Ev(ptr noundef nonnull align 8 dereferenceable(305) %3)
          to label %4 unwind label %5

4:                                                ; preds = %0
  store ptr %3, ptr @_ZN12_GLOBAL__N_112s_threadpoolE, align 8, !tbaa !5
  ret void

5:                                                ; preds = %0
  %6 = landingpad { ptr, i32 }
          cleanup
  %7 = extractvalue { ptr, i32 } %6, 0
  store ptr %7, ptr %1, align 8
  %8 = extractvalue { ptr, i32 } %6, 1
  store i32 %8, ptr %2, align 4
  call void @_ZdlPvm(ptr noundef %3, i64 noundef 312) #6
  br label %9

9:                                                ; preds = %5
  %10 = load ptr, ptr %1, align 8
  %11 = load i32, ptr %2, align 4
  %12 = insertvalue { ptr, i32 } poison, ptr %10, 0
  %13 = insertvalue { ptr, i32 } %12, i32 %11, 1
  resume { ptr, i32 } %13
}

; Function Attrs: nobuiltin allocsize(0)
declare noundef nonnull ptr @_Znwm(i64 noundef) #1

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZN17redex_thread_pool10ThreadPoolC2Ev(ptr noundef nonnull align 8 dereferenceable(305)) unnamed_addr #3 align 2

; Function Attrs: nobuiltin nounwind
declare void @_ZdlPvm(ptr noundef, i64 noundef) #4

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 = { nobuiltin 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 #2 = { nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #3 = { inlinehint 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 #4 = { nobuiltin 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 #5 = { builtin allocsize(0) }
attributes #6 = { builtin 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"}


; 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"

@_ZN12_GLOBAL__N_112s_threadpoolE = external hidden local_unnamed_addr global ptr, align 8

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN17redex_thread_pool10ThreadPool6createEv() local_unnamed_addr #0 align 2 personality ptr @__gxx_personality_v0 {
  %1 = tail call noalias noundef nonnull dereferenceable(312) ptr @_Znwm(i64 noundef 312) #5
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 16 dereferenceable(312) %1, i8 0, i64 312, i1 false)
  invoke void @_ZN17redex_thread_pool10ThreadPoolC2Ev(ptr noundef nonnull align 8 dereferenceable(305) %1)
          to label %2 unwind label %3

2:                                                ; preds = %0
  store ptr %1, ptr @_ZN12_GLOBAL__N_112s_threadpoolE, align 8, !tbaa !5
  ret void

3:                                                ; preds = %0
  %4 = landingpad { ptr, i32 }
          cleanup
  tail call void @_ZdlPvm(ptr noundef nonnull %1, i64 noundef 312) #6
  resume { ptr, i32 } %4
}

; Function Attrs: nobuiltin allocsize(0)
declare noundef nonnull ptr @_Znwm(i64 noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZN17redex_thread_pool10ThreadPoolC2Ev(ptr noundef nonnull align 8 dereferenceable(305)) unnamed_addr #3 align 2

; Function Attrs: nobuiltin nounwind
declare void @_ZdlPvm(ptr noundef, i64 noundef) local_unnamed_addr #4

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 = { nobuiltin 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 #2 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #3 = { inlinehint 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 #4 = { nobuiltin 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 #5 = { builtin allocsize(0) }
attributes #6 = { builtin 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"}


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