; LLVM IR from trabucayre/openFPGALoader :: src/lattice.ll (ZN7Lattice11readFeabitsEv)

; 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.Device = type <{ ptr, ptr, %"class.std::__cxx11::basic_string", %"class.std::__cxx11::basic_string", i32, i8, i8, i8, i8 }>
%"class.std::__cxx11::basic_string" = type { %"struct.std::__cxx11::basic_string<char>::_Alloc_hider", i64, %union.anon }
%"struct.std::__cxx11::basic_string<char>::_Alloc_hider" = type { ptr }
%union.anon = type { i64, [8 x i8] }

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
declare dso_local noundef zeroext i1 @_ZN7Lattice5wr_rdEhPhiS0_ib(ptr noundef nonnull align 8 dereferenceable(152), i8 noundef zeroext, ptr noundef, i32 noundef, ptr noundef, i32 noundef, i1 noundef zeroext) #1 align 2

declare void @_ZN4Jtag9set_stateENS_10tapState_tEh(ptr noundef nonnull align 8 dereferenceable(193), i32 noundef, i8 noundef zeroext) #2

declare void @_ZN4Jtag9toggleClkEi(ptr noundef nonnull align 8 dereferenceable(193), i32 noundef) #2

; Function Attrs: mustprogress uwtable
define dso_local noundef zeroext i16 @_ZN7Lattice11readFeabitsEv(ptr noundef nonnull align 8 dereferenceable(152) %0) #1 align 2 {
  %2 = alloca ptr, align 8
  %3 = alloca [2 x i8], align 1
  store ptr %0, ptr %2, align 8, !tbaa !5
  %4 = load ptr, ptr %2, align 8
  call void @llvm.lifetime.start.p0(i64 2, ptr %3) #3
  %5 = getelementptr inbounds [2 x i8], ptr %3, i64 0, i64 0
  %6 = call noundef zeroext i1 @_ZN7Lattice5wr_rdEhPhiS0_ib(ptr noundef nonnull align 8 dereferenceable(152) %4, i8 noundef zeroext -5, ptr noundef null, i32 noundef 0, ptr noundef %5, i32 noundef 2, i1 noundef zeroext false)
  %7 = getelementptr inbounds %class.Device, ptr %4, i32 0, i32 1
  %8 = load ptr, ptr %7, align 8, !tbaa !9
  call void @_ZN4Jtag9set_stateENS_10tapState_tEh(ptr noundef nonnull align 8 dereferenceable(193) %8, i32 noundef 1, i8 noundef zeroext 1)
  %9 = getelementptr inbounds %class.Device, ptr %4, i32 0, i32 1
  %10 = load ptr, ptr %9, align 8, !tbaa !9
  call void @_ZN4Jtag9toggleClkEi(ptr noundef nonnull align 8 dereferenceable(193) %10, i32 noundef 1000)
  %11 = getelementptr inbounds [2 x i8], ptr %3, i64 0, i64 0
  %12 = load i8, ptr %11, align 1, !tbaa !16
  %13 = zext i8 %12 to i32
  %14 = getelementptr inbounds [2 x i8], ptr %3, i64 0, i64 1
  %15 = load i8, ptr %14, align 1, !tbaa !16
  %16 = zext i8 %15 to i16
  %17 = zext i16 %16 to i32
  %18 = shl i32 %17, 8
  %19 = or i32 %13, %18
  %20 = trunc i32 %19 to i16
  call void @llvm.lifetime.end.p0(i64 2, ptr %3) #3
  ret i16 %20
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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++ TBAA"}
!9 = !{!10, !6, i64 8}
!10 = !{!"_ZTS6Device", !6, i64 8, !11, i64 16, !11, i64 48, !14, i64 80, !15, i64 84, !15, i64 85, !15, i64 86}
!11 = !{!"_ZTSNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE", !12, i64 0, !13, i64 8, !7, i64 16}
!12 = !{!"_ZTSNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE12_Alloc_hiderE", !6, i64 0}
!13 = !{!"long", !7, i64 0}
!14 = !{!"_ZTSN6Device9prog_modeE", !7, i64 0}
!15 = !{!"bool", !7, i64 0}
!16 = !{!7, !7, i64 0}


; 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"

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
declare dso_local noundef zeroext i1 @_ZN7Lattice5wr_rdEhPhiS0_ib(ptr noundef nonnull align 8 dereferenceable(152), i8 noundef zeroext, ptr noundef, i32 noundef, ptr noundef, i32 noundef, i1 noundef zeroext) local_unnamed_addr #1 align 2

declare void @_ZN4Jtag9set_stateENS_10tapState_tEh(ptr noundef nonnull align 8 dereferenceable(193), i32 noundef, i8 noundef zeroext) local_unnamed_addr #2

declare void @_ZN4Jtag9toggleClkEi(ptr noundef nonnull align 8 dereferenceable(193), i32 noundef) local_unnamed_addr #2

; Function Attrs: mustprogress uwtable
define dso_local noundef zeroext i16 @_ZN7Lattice11readFeabitsEv(ptr noundef nonnull align 8 dereferenceable(152) %0) local_unnamed_addr #1 align 2 {
  %2 = alloca [2 x i8], align 2
  call void @llvm.lifetime.start.p0(i64 2, ptr nonnull %2) #3
  %3 = call noundef zeroext i1 @_ZN7Lattice5wr_rdEhPhiS0_ib(ptr noundef nonnull align 8 dereferenceable(152) %0, i8 noundef zeroext -5, ptr noundef null, i32 noundef 0, ptr noundef nonnull %2, i32 noundef 2, i1 noundef zeroext false)
  %4 = getelementptr inbounds i8, ptr %0, i64 8
  %5 = load ptr, ptr %4, align 8, !tbaa !5
  call void @_ZN4Jtag9set_stateENS_10tapState_tEh(ptr noundef nonnull align 8 dereferenceable(193) %5, i32 noundef 1, i8 noundef zeroext 1)
  %6 = load ptr, ptr %4, align 8, !tbaa !5
  call void @_ZN4Jtag9toggleClkEi(ptr noundef nonnull align 8 dereferenceable(193) %6, i32 noundef 1000)
  %7 = load i16, ptr %2, align 2
  call void @llvm.lifetime.end.p0(i64 2, ptr nonnull %2) #3
  ret i16 %7
}

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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, !7, i64 8}
!6 = !{!"_ZTS6Device", !7, i64 8, !10, i64 16, !10, i64 48, !13, i64 80, !14, i64 84, !14, i64 85, !14, i64 86}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"_ZTSNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE", !11, i64 0, !12, i64 8, !8, i64 16}
!11 = !{!"_ZTSNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE12_Alloc_hiderE", !7, i64 0}
!12 = !{!"long", !8, i64 0}
!13 = !{!"_ZTSN6Device9prog_modeE", !8, i64 0}
!14 = !{!"bool", !8, i64 0}


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