; LLVM IR from clausecker/24puzzle :: pdbverify (pdb_verify)

; 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.verify_config = type { %struct.parallel_config, i32, ptr }
%struct.parallel_config = type { ptr, i32, ptr }

; Function Attrs: nounwind uwtable
define dso_local i32 @pdb_verify(ptr noundef %0, ptr noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca %struct.verify_config, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 40, ptr %5) #3
  %6 = load ptr, ptr %3, align 8, !tbaa !5
  %7 = getelementptr inbounds %struct.verify_config, ptr %5, i32 0, i32 0
  %8 = getelementptr inbounds %struct.parallel_config, ptr %7, i32 0, i32 0
  store ptr %6, ptr %8, align 8, !tbaa !9
  %9 = getelementptr inbounds %struct.verify_config, ptr %5, i32 0, i32 0
  %10 = getelementptr inbounds %struct.parallel_config, ptr %9, i32 0, i32 2
  store ptr @verify_cohort, ptr %10, align 8, !tbaa !12
  %11 = getelementptr inbounds %struct.verify_config, ptr %5, i32 0, i32 1
  store atomic i32 0, ptr %11 seq_cst, align 4, !tbaa !13
  %12 = load ptr, ptr %4, align 8, !tbaa !5
  %13 = getelementptr inbounds %struct.verify_config, ptr %5, i32 0, i32 2
  store ptr %12, ptr %13, align 8, !tbaa !14
  %14 = getelementptr inbounds %struct.verify_config, ptr %5, i32 0, i32 0
  call void @pdb_iterate_parallel(ptr noundef %14)
  %15 = getelementptr inbounds %struct.verify_config, ptr %5, i32 0, i32 1
  %16 = load atomic i32, ptr %15 seq_cst, align 4, !tbaa !13
  call void @llvm.lifetime.end.p0(i64 40, ptr %5) #3
  ret i32 %16
}

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

; Function Attrs: nounwind uwtable
declare hidden void @verify_cohort(ptr noundef, ptr noundef) #0

declare void @pdb_iterate_parallel(ptr noundef) #2

; 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 = { "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, !6, i64 0}
!10 = !{!"verify_config", !11, i64 0, !7, i64 24, !6, i64 32}
!11 = !{!"parallel_config", !6, i64 0, !7, i64 8, !6, i64 16}
!12 = !{!10, !6, i64 16}
!13 = !{!10, !7, i64 24}
!14 = !{!10, !6, i64 32}


; 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"

%struct.verify_config = type { %struct.parallel_config, i32, ptr }
%struct.parallel_config = type { ptr, i32, ptr }

; Function Attrs: nounwind uwtable
define dso_local i32 @pdb_verify(ptr noundef %0, ptr noundef %1) local_unnamed_addr #0 {
  %3 = alloca %struct.verify_config, align 8
  call void @llvm.lifetime.start.p0(i64 40, ptr nonnull %3) #3
  store ptr %0, ptr %3, align 8, !tbaa !5
  %4 = getelementptr inbounds i8, ptr %3, i64 16
  store ptr @verify_cohort, ptr %4, align 8, !tbaa !11
  %5 = getelementptr inbounds i8, ptr %3, i64 24
  store atomic i32 0, ptr %5 seq_cst, align 8, !tbaa !12
  %6 = getelementptr inbounds i8, ptr %3, i64 32
  store ptr %1, ptr %6, align 8, !tbaa !13
  call void @pdb_iterate_parallel(ptr noundef nonnull %3) #3
  %7 = load atomic i32, ptr %5 seq_cst, align 8, !tbaa !12
  call void @llvm.lifetime.end.p0(i64 40, ptr nonnull %3) #3
  ret i32 %7
}

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

; Function Attrs: nounwind uwtable
declare hidden void @verify_cohort(ptr noundef, ptr noundef) #0

declare void @pdb_iterate_parallel(ptr noundef) local_unnamed_addr #2

; Function Attrs: mustprogress 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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { "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, !8, i64 0}
!6 = !{!"verify_config", !7, i64 0, !9, i64 24, !8, i64 32}
!7 = !{!"parallel_config", !8, i64 0, !9, i64 8, !8, i64 16}
!8 = !{!"any pointer", !9, i64 0}
!9 = !{!"omnipotent char", !10, i64 0}
!10 = !{!"Simple C/C++ TBAA"}
!11 = !{!6, !8, i64 16}
!12 = !{!6, !9, i64 24}
!13 = !{!6, !8, i64 32}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,SROAPass