; LLVM IR from WayneLin92/SSeqCpp :: thirdparty/fmt/test (scan-test)

; 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.fmt::v10::detail::scan_buffer::iterator" = type <{ ptr, ptr, i8, [7 x i8] }>
%"class.fmt::v10::detail::scan_buffer::sentinel" = type { i8 }

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN3fmt3v106detail4readENS1_11scan_buffer8iteratorERNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEERKNS0_12format_specsIcEE(ptr dead_on_unwind noalias writable sret(%"class.fmt::v10::detail::scan_buffer::iterator") align 8 %0, ptr noundef byval(%"class.fmt::v10::detail::scan_buffer::iterator") align 8 %1, ptr noundef nonnull align 8 dereferenceable(32) %2, ptr noundef nonnull align 4 dereferenceable(16) %3) #0 {
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca %"class.fmt::v10::detail::scan_buffer::iterator", align 8
  %8 = alloca %"class.fmt::v10::detail::scan_buffer::sentinel", align 1
  %9 = alloca %"class.fmt::v10::detail::scan_buffer::iterator", align 8
  store ptr %2, ptr %5, align 8, !tbaa !5
  store ptr %3, ptr %6, align 8, !tbaa !5
  br label %10

10:                                               ; preds = %18, %4
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %7, ptr align 8 %1, i64 24, i1 false), !tbaa.struct !9
  %11 = call noundef zeroext i1 @_ZN3fmt3v106detailneENS1_11scan_buffer8iteratorENS2_8sentinelE(ptr noundef byval(%"class.fmt::v10::detail::scan_buffer::iterator") align 8 %7)
  br i1 %11, label %12, label %16

12:                                               ; preds = %10
  %13 = call noundef signext i8 @_ZNK3fmt3v106detail11scan_buffer8iteratordeEv(ptr noundef nonnull align 8 dereferenceable(17) %1)
  %14 = sext i8 %13 to i32
  %15 = icmp ne i32 %14, 32
  br label %16

16:                                               ; preds = %12, %10
  %17 = phi i1 [ false, %10 ], [ %15, %12 ]
  br i1 %17, label %18, label %21

18:                                               ; preds = %16
  %19 = load ptr, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 24, ptr %9) #4
  call void @_ZN3fmt3v106detail11scan_buffer8iteratorppEi(ptr dead_on_unwind writable sret(%"class.fmt::v10::detail::scan_buffer::iterator") align 8 %9, ptr noundef nonnull align 8 dereferenceable(17) %1, i32 noundef 0)
  %20 = call noundef signext i8 @_ZNK3fmt3v106detail11scan_buffer8iteratordeEv(ptr noundef nonnull align 8 dereferenceable(17) %9)
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE9push_backEc(ptr noundef nonnull align 8 dereferenceable(32) %19, i8 noundef signext %20)
  call void @llvm.lifetime.end.p0(i64 24, ptr %9) #4
  br label %10, !llvm.loop !11

21:                                               ; preds = %16
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %0, ptr align 8 %1, i64 24, i1 false), !tbaa.struct !9
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN3fmt3v106detailneENS1_11scan_buffer8iteratorENS2_8sentinelE(ptr noundef byval(%"class.fmt::v10::detail::scan_buffer::iterator") align 8) #1

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef signext i8 @_ZNK3fmt3v106detail11scan_buffer8iteratordeEv(ptr noundef nonnull align 8 dereferenceable(17)) #1 align 2

; Function Attrs: mustprogress uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE9push_backEc(ptr noundef nonnull align 8 dereferenceable(32), i8 noundef signext) #0 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #3

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN3fmt3v106detail11scan_buffer8iteratorppEi(ptr dead_on_unwind noalias writable sret(%"class.fmt::v10::detail::scan_buffer::iterator") align 8, ptr noundef nonnull align 8 dereferenceable(17), i32 noundef) #0 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #3

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 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 #2 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { 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 = !{i64 0, i64 8, !5, i64 8, i64 8, !5, i64 16, i64 1, !10}
!10 = !{!7, !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


; 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.fmt::v10::detail::scan_buffer::iterator" = type <{ ptr, ptr, i8, [7 x i8] }>

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN3fmt3v106detail4readENS1_11scan_buffer8iteratorERNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEERKNS0_12format_specsIcEE(ptr dead_on_unwind noalias nocapture writable writeonly sret(%"class.fmt::v10::detail::scan_buffer::iterator") align 8 %0, ptr noundef byval(%"class.fmt::v10::detail::scan_buffer::iterator") align 8 %1, ptr noundef nonnull align 8 dereferenceable(32) %2, ptr nocapture noundef nonnull readnone align 4 dereferenceable(16) %3) local_unnamed_addr #0 {
  %5 = alloca %"class.fmt::v10::detail::scan_buffer::iterator", align 8
  %6 = tail call noundef zeroext i1 @_ZN3fmt3v106detailneENS1_11scan_buffer8iteratorENS2_8sentinelE(ptr noundef nonnull byval(%"class.fmt::v10::detail::scan_buffer::iterator") align 8 %1)
  br i1 %6, label %.lr.ph, label %.critedge

.lr.ph:                                           ; preds = %4, %8
  %7 = call noundef signext i8 @_ZNK3fmt3v106detail11scan_buffer8iteratordeEv(ptr noundef nonnull align 8 dereferenceable(17) %1)
  %.not = icmp eq i8 %7, 32
  br i1 %.not, label %.critedge, label %8

8:                                                ; preds = %.lr.ph
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %5) #4
  call void @_ZN3fmt3v106detail11scan_buffer8iteratorppEi(ptr dead_on_unwind nonnull writable sret(%"class.fmt::v10::detail::scan_buffer::iterator") align 8 %5, ptr noundef nonnull align 8 dereferenceable(17) %1, i32 noundef 0)
  %9 = call noundef signext i8 @_ZNK3fmt3v106detail11scan_buffer8iteratordeEv(ptr noundef nonnull align 8 dereferenceable(17) %5)
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE9push_backEc(ptr noundef nonnull align 8 dereferenceable(32) %2, i8 noundef signext %9)
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %5) #4
  %10 = call noundef zeroext i1 @_ZN3fmt3v106detailneENS1_11scan_buffer8iteratorENS2_8sentinelE(ptr noundef nonnull byval(%"class.fmt::v10::detail::scan_buffer::iterator") align 8 %1)
  br i1 %10, label %.lr.ph, label %.critedge, !llvm.loop !5

.critedge:                                        ; preds = %.lr.ph, %8, %4
  call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef nonnull align 8 dereferenceable(24) %1, i64 24, i1 false), !tbaa.struct !7
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN3fmt3v106detailneENS1_11scan_buffer8iteratorENS2_8sentinelE(ptr noundef byval(%"class.fmt::v10::detail::scan_buffer::iterator") align 8) local_unnamed_addr #1

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef signext i8 @_ZNK3fmt3v106detail11scan_buffer8iteratordeEv(ptr noundef nonnull align 8 dereferenceable(17)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE9push_backEc(ptr noundef nonnull align 8 dereferenceable(32), i8 noundef signext) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #3

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN3fmt3v106detail11scan_buffer8iteratorppEi(ptr dead_on_unwind noalias writable sret(%"class.fmt::v10::detail::scan_buffer::iterator") align 8, ptr noundef nonnull align 8 dereferenceable(17), i32 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #3

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 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 #2 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { 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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}
!7 = !{i64 0, i64 8, !8, i64 8, i64 8, !8, i64 16, i64 1, !12}
!8 = !{!9, !9, i64 0}
!9 = !{!"any pointer", !10, i64 0}
!10 = !{!"omnipotent char", !11, i64 0}
!11 = !{!"Simple C++ TBAA"}
!12 = !{!10, !10, i64 0}


; Effective O3 passes: DSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,MemCpyOptPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass