; LLVM IR from facebookresearch/habitat-sim :: src/deps/tinyxml2/tinyxml2.ll (ZN8tinyxml27StrPair9ParseNameEPc)

; 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"

; 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 nounwind uwtable
declare dso_local void @_ZN8tinyxml27StrPair3SetEPcS1_i(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef, ptr noundef, i32 noundef) #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef ptr @_ZN8tinyxml27StrPair9ParseNameEPc(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef %1) #2 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  %7 = load ptr, ptr %4, align 8
  %8 = load ptr, ptr %5, align 8, !tbaa !5
  %9 = icmp ne ptr %8, null
  br i1 %9, label %10, label %14

10:                                               ; preds = %2
  %11 = load ptr, ptr %5, align 8, !tbaa !5
  %12 = load i8, ptr %11, align 1, !tbaa !9
  %13 = icmp ne i8 %12, 0
  br i1 %13, label %15, label %14

14:                                               ; preds = %10, %2
  store ptr null, ptr %3, align 8
  br label %41

15:                                               ; preds = %10
  %16 = load ptr, ptr %5, align 8, !tbaa !5
  %17 = load i8, ptr %16, align 1, !tbaa !9
  %18 = call noundef zeroext i1 @_ZN8tinyxml27XMLUtil15IsNameStartCharEh(i8 noundef zeroext %17)
  br i1 %18, label %20, label %19

19:                                               ; preds = %15
  store ptr null, ptr %3, align 8
  br label %41

20:                                               ; preds = %15
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #4
  %21 = load ptr, ptr %5, align 8, !tbaa !5
  store ptr %21, ptr %6, align 8, !tbaa !5
  %22 = load ptr, ptr %5, align 8, !tbaa !5
  %23 = getelementptr inbounds i8, ptr %22, i32 1
  store ptr %23, ptr %5, align 8, !tbaa !5
  br label %24

24:                                               ; preds = %34, %20
  %25 = load ptr, ptr %5, align 8, !tbaa !5
  %26 = load i8, ptr %25, align 1, !tbaa !9
  %27 = icmp ne i8 %26, 0
  br i1 %27, label %28, label %32

28:                                               ; preds = %24
  %29 = load ptr, ptr %5, align 8, !tbaa !5
  %30 = load i8, ptr %29, align 1, !tbaa !9
  %31 = call noundef zeroext i1 @_ZN8tinyxml27XMLUtil10IsNameCharEh(i8 noundef zeroext %30)
  br label %32

32:                                               ; preds = %28, %24
  %33 = phi i1 [ false, %24 ], [ %31, %28 ]
  br i1 %33, label %34, label %37

34:                                               ; preds = %32
  %35 = load ptr, ptr %5, align 8, !tbaa !5
  %36 = getelementptr inbounds i8, ptr %35, i32 1
  store ptr %36, ptr %5, align 8, !tbaa !5
  br label %24, !llvm.loop !10

37:                                               ; preds = %32
  %38 = load ptr, ptr %6, align 8, !tbaa !5
  %39 = load ptr, ptr %5, align 8, !tbaa !5
  call void @_ZN8tinyxml27StrPair3SetEPcS1_i(ptr noundef nonnull align 8 dereferenceable(24) %7, ptr noundef %38, ptr noundef %39, i32 noundef 0)
  %40 = load ptr, ptr %5, align 8, !tbaa !5
  store ptr %40, ptr %3, align 8
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #4
  br label %41

41:                                               ; preds = %37, %19, %14
  %42 = load ptr, ptr %3, align 8
  ret ptr %42
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN8tinyxml27XMLUtil15IsNameStartCharEh(i8 noundef zeroext) #3 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN8tinyxml27XMLUtil10IsNameCharEh(i8 noundef zeroext) #3 align 2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 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 = { inlinehint 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 #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 = !{!7, !7, i64 0}
!10 = distinct !{!10, !11}
!11 = !{!"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"

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN8tinyxml27StrPair3SetEPcS1_i(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef, ptr noundef, i32 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef ptr @_ZN8tinyxml27StrPair9ParseNameEPc(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef %1) local_unnamed_addr #0 align 2 {
  %.not = icmp eq ptr %1, null
  br i1 %.not, label %10, label %3

3:                                                ; preds = %2
  %4 = load i8, ptr %1, align 1, !tbaa !5
  %.not17 = icmp eq i8 %4, 0
  br i1 %.not17, label %10, label %5

5:                                                ; preds = %3
  %6 = tail call noundef zeroext i1 @_ZN8tinyxml27XMLUtil15IsNameStartCharEh(i8 noundef zeroext %4)
  br i1 %6, label %.preheader, label %10

.preheader:                                       ; preds = %5, %8
  %.pn = phi ptr [ %.013, %8 ], [ %1, %5 ]
  %.013 = getelementptr inbounds i8, ptr %.pn, i64 1
  %7 = load i8, ptr %.013, align 1, !tbaa !5
  %.not18 = icmp eq i8 %7, 0
  br i1 %.not18, label %.critedge, label %8

8:                                                ; preds = %.preheader
  %9 = tail call noundef zeroext i1 @_ZN8tinyxml27XMLUtil10IsNameCharEh(i8 noundef zeroext %7)
  br i1 %9, label %.preheader, label %.critedge, !llvm.loop !8

.critedge:                                        ; preds = %.preheader, %8
  tail call void @_ZN8tinyxml27StrPair3SetEPcS1_i(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef nonnull %1, ptr noundef nonnull %.013, i32 noundef 0)
  br label %10

10:                                               ; preds = %5, %2, %3, %.critedge
  %.0 = phi ptr [ %.013, %.critedge ], [ null, %3 ], [ null, %2 ], [ null, %5 ]
  ret ptr %.0
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN8tinyxml27XMLUtil15IsNameStartCharEh(i8 noundef zeroext) local_unnamed_addr #1 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN8tinyxml27XMLUtil10IsNameCharEh(i8 noundef zeroext) local_unnamed_addr #1 align 2

attributes #0 = { 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 #1 = { inlinehint 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" }

!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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = distinct !{!8, !9}
!9 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass