; LLVM IR from PaddlePaddle/Paddle :: paddle/phi/core/platform (denormal)

; 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.std::pair" = type { i8, i8 }
%"class.std::tuple" = type { %"struct.std::_Tuple_impl" }
%"struct.std::_Tuple_impl" = type { %"struct.std::_Tuple_impl.0", %"struct.std::_Head_base.1" }
%"struct.std::_Tuple_impl.0" = type { %"struct.std::_Head_base" }
%"struct.std::_Head_base" = type { ptr }
%"struct.std::_Head_base.1" = type { ptr }
%"class.paddle::platform::ScopedRestoreFlushDenormalState" = type { i8, i8 }

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN6paddle8platform31ScopedRestoreFlushDenormalStateC2Ev(ptr noundef nonnull align 1 dereferenceable(2) %0) unnamed_addr #0 align 2 {
  %2 = alloca ptr, align 8
  %3 = alloca %"struct.std::pair", align 1
  %4 = alloca %"class.std::tuple", align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %5 = load ptr, ptr %2, align 8
  %6 = getelementptr inbounds %"class.paddle::platform::ScopedRestoreFlushDenormalState", ptr %5, i32 0, i32 0
  store i8 0, ptr %6, align 1, !tbaa !9
  %7 = getelementptr inbounds %"class.paddle::platform::ScopedRestoreFlushDenormalState", ptr %5, i32 0, i32 1
  store i8 0, ptr %7, align 1, !tbaa !12
  call void @llvm.lifetime.start.p0(i64 2, ptr %3) #3
  %8 = call i16 @_ZN6paddle8platformL16GetDenormalStateEv()
  store i16 %8, ptr %3, align 1
  call void @llvm.lifetime.start.p0(i64 16, ptr %4) #3
  %9 = getelementptr inbounds %"class.paddle::platform::ScopedRestoreFlushDenormalState", ptr %5, i32 0, i32 0
  %10 = getelementptr inbounds %"class.paddle::platform::ScopedRestoreFlushDenormalState", ptr %5, i32 0, i32 1
  call void @_ZSt3tieIJbbEESt5tupleIJDpRT_EES3_(ptr dead_on_unwind writable sret(%"class.std::tuple") align 8 %4, ptr noundef nonnull align 1 dereferenceable(1) %9, ptr noundef nonnull align 1 dereferenceable(1) %10) #3
  %11 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt5tupleIJRbS0_EEaSIbbEENSt9enable_ifIXcl12__assignableIT_T0_EEERS1_E4typeEOSt4pairIS4_S5_E(ptr noundef nonnull align 8 dereferenceable(16) %4, ptr noundef nonnull align 1 dereferenceable(2) %3) #3
  call void @llvm.lifetime.end.p0(i64 16, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 2, ptr %3) #3
  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: mustprogress uwtable
declare hidden i16 @_ZN6paddle8platformL16GetDenormalStateEv() #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZSt3tieIJbbEESt5tupleIJDpRT_EES3_(ptr dead_on_unwind noalias writable sret(%"class.std::tuple") align 8, ptr noundef nonnull align 1 dereferenceable(1), ptr noundef nonnull align 1 dereferenceable(1)) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt5tupleIJRbS0_EEaSIbbEENSt9enable_ifIXcl12__assignableIT_T0_EEERS1_E4typeEOSt4pairIS4_S5_E(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 1 dereferenceable(2)) #2 align 2

; 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 = { mustprogress 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++ TBAA"}
!9 = !{!10, !11, i64 0}
!10 = !{!"_ZTSN6paddle8platform31ScopedRestoreFlushDenormalStateE", !11, i64 0, !11, i64 1}
!11 = !{!"bool", !7, i64 0}
!12 = !{!10, !11, i64 1}


; 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.std::pair" = type { i8, i8 }
%"class.std::tuple" = type { %"struct.std::_Tuple_impl" }
%"struct.std::_Tuple_impl" = type { %"struct.std::_Tuple_impl.0", %"struct.std::_Head_base.1" }
%"struct.std::_Tuple_impl.0" = type { %"struct.std::_Head_base" }
%"struct.std::_Head_base" = type { ptr }
%"struct.std::_Head_base.1" = type { ptr }

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN6paddle8platform31ScopedRestoreFlushDenormalStateC2Ev(ptr noundef nonnull align 1 dereferenceable(2) %0) unnamed_addr #0 align 2 {
  %2 = alloca %"struct.std::pair", align 2
  %3 = alloca %"class.std::tuple", align 8
  store i8 0, ptr %0, align 1, !tbaa !5
  %4 = getelementptr inbounds i8, ptr %0, i64 1
  store i8 0, ptr %4, align 1, !tbaa !10
  call void @llvm.lifetime.start.p0(i64 2, ptr nonnull %2) #3
  %5 = tail call i16 @_ZN6paddle8platformL16GetDenormalStateEv()
  store i16 %5, ptr %2, align 2
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %3) #3
  call void @_ZSt3tieIJbbEESt5tupleIJDpRT_EES3_(ptr dead_on_unwind nonnull writable sret(%"class.std::tuple") align 8 %3, ptr noundef nonnull align 1 dereferenceable(1) %0, ptr noundef nonnull align 1 dereferenceable(1) %4) #3
  %6 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt5tupleIJRbS0_EEaSIbbEENSt9enable_ifIXcl12__assignableIT_T0_EEERS1_E4typeEOSt4pairIS4_S5_E(ptr noundef nonnull align 8 dereferenceable(16) %3, ptr noundef nonnull align 1 dereferenceable(2) %2) #3
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %3) #3
  call void @llvm.lifetime.end.p0(i64 2, ptr nonnull %2) #3
  ret void
}

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

; Function Attrs: mustprogress uwtable
declare hidden i16 @_ZN6paddle8platformL16GetDenormalStateEv() local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZSt3tieIJbbEESt5tupleIJDpRT_EES3_(ptr dead_on_unwind noalias writable sret(%"class.std::tuple") align 8, ptr noundef nonnull align 1 dereferenceable(1), ptr noundef nonnull align 1 dereferenceable(1)) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt5tupleIJRbS0_EEaSIbbEENSt9enable_ifIXcl12__assignableIT_T0_EEERS1_E4typeEOSt4pairIS4_S5_E(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 1 dereferenceable(2)) local_unnamed_addr #2 align 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 = { 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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { mustprogress 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, !7, i64 0}
!6 = !{!"_ZTSN6paddle8platform31ScopedRestoreFlushDenormalStateE", !7, i64 0, !7, i64 1}
!7 = !{!"bool", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!6, !7, i64 1}


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