; LLVM IR from AdaptiveCpp/AdaptiveCpp :: src/runtime/serialization/serialization.ll (ZN7hipsycl2rtlsERSoNS0_9device_idE)

; 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"

%"class.hipsycl::rt::device_id" = type { %"struct.hipsycl::rt::backend_descriptor", i32 }
%"struct.hipsycl::rt::backend_descriptor" = type { i32, i32, i32 }

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNK7hipsycl2rt9device_id4dumpERSo(ptr noundef nonnull align 4 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(8)) #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN7hipsycl2rtlsERSoNS0_9device_idE(ptr noundef nonnull align 8 dereferenceable(8) %0, i64 %1, i64 %2) #0 {
  %4 = alloca %"class.hipsycl::rt::device_id", align 4
  %5 = alloca ptr, align 8
  %6 = getelementptr inbounds { i64, i64 }, ptr %4, i32 0, i32 0
  store i64 %1, ptr %6, align 4
  %7 = getelementptr inbounds { i64, i64 }, ptr %4, i32 0, i32 1
  store i64 %2, ptr %7, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  %8 = load ptr, ptr %5, align 8, !tbaa !5
  call void @_ZNK7hipsycl2rt9device_id4dumpERSo(ptr noundef nonnull align 4 dereferenceable(16) %4, ptr noundef nonnull align 8 dereferenceable(8) %8)
  %9 = load ptr, ptr %5, align 8, !tbaa !5
  ret ptr %9
}

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"}


; 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"

%"class.hipsycl::rt::device_id" = type { %"struct.hipsycl::rt::backend_descriptor", i32 }
%"struct.hipsycl::rt::backend_descriptor" = type { i32, i32, i32 }

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNK7hipsycl2rt9device_id4dumpERSo(ptr noundef nonnull align 4 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN7hipsycl2rtlsERSoNS0_9device_idE(ptr noundef nonnull returned align 8 dereferenceable(8) %0, i64 %1, i64 %2) local_unnamed_addr #0 {
  %4 = alloca %"class.hipsycl::rt::device_id", align 8
  store i64 %1, ptr %4, align 8
  %5 = getelementptr inbounds i8, ptr %4, i64 8
  store i64 %2, ptr %5, align 8
  call void @_ZNK7hipsycl2rt9device_id4dumpERSo(ptr noundef nonnull align 4 dereferenceable(16) %4, ptr noundef nonnull align 8 dereferenceable(8) %0)
  ret ptr %0
}

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)"}


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