; LLVM IR from Razakhel/RaZ :: src/RaZ/Render/MeshRenderer.ll (ZN3Raz12MeshRenderer11setMaterialEONS_8MaterialE)

; 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.__gnu_cxx::__normal_iterator" = type { ptr }
%"class.Raz::MeshRenderer" = type { %"class.Raz::Component", i8, %"class.std::vector", %"class.std::vector.0" }
%"class.Raz::Component" = type { ptr }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<Raz::SubmeshRenderer, std::allocator<Raz::SubmeshRenderer>>::_Vector_impl" }
%"struct.std::_Vector_base<Raz::SubmeshRenderer, std::allocator<Raz::SubmeshRenderer>>::_Vector_impl" = type { %"struct.std::_Vector_base<Raz::SubmeshRenderer, std::allocator<Raz::SubmeshRenderer>>::_Vector_impl_data" }
%"struct.std::_Vector_base<Raz::SubmeshRenderer, std::allocator<Raz::SubmeshRenderer>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::vector.0" = type { %"struct.std::_Vector_base.1" }
%"struct.std::_Vector_base.1" = type { %"struct.std::_Vector_base<Raz::Material, std::allocator<Raz::Material>>::_Vector_impl" }
%"struct.std::_Vector_base<Raz::Material, std::allocator<Raz::Material>>::_Vector_impl" = type { %"struct.std::_Vector_base<Raz::Material, std::allocator<Raz::Material>>::_Vector_impl_data" }
%"struct.std::_Vector_base<Raz::Material, std::allocator<Raz::Material>>::_Vector_impl_data" = type { ptr, ptr, ptr }

; 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
define dso_local noundef nonnull align 8 dereferenceable(384) ptr @_ZN3Raz12MeshRenderer11setMaterialEONS_8MaterialE(ptr noundef nonnull align 8 dereferenceable(64) %0, ptr noundef nonnull align 8 dereferenceable(384) %1) #1 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %8 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %9 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  %10 = load ptr, ptr %3, align 8
  %11 = getelementptr inbounds %"class.Raz::MeshRenderer", ptr %10, i32 0, i32 3
  call void @_ZNSt6vectorIN3Raz8MaterialESaIS1_EE5clearEv(ptr noundef nonnull align 8 dereferenceable(24) %11) #5
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #5
  %12 = getelementptr inbounds %"class.Raz::MeshRenderer", ptr %10, i32 0, i32 3
  %13 = load ptr, ptr %4, align 8, !tbaa !5
  %14 = call noundef nonnull align 8 dereferenceable(384) ptr @_ZNSt6vectorIN3Raz8MaterialESaIS1_EE12emplace_backIJS1_EEERS1_DpOT_(ptr noundef nonnull align 8 dereferenceable(24) %12, ptr noundef nonnull align 8 dereferenceable(384) %13)
  store ptr %14, ptr %5, align 8, !tbaa !5
  %15 = load ptr, ptr %5, align 8, !tbaa !5
  %16 = call noundef nonnull align 8 dereferenceable(384) ptr @_ZN3Raz8Material10getProgramEv(ptr noundef nonnull align 8 dereferenceable(384) %15) #5
  call void @_ZNK3Raz13ShaderProgram14sendAttributesEv(ptr noundef nonnull align 8 dereferenceable(120) %16)
  %17 = load ptr, ptr %5, align 8, !tbaa !5
  %18 = call noundef nonnull align 8 dereferenceable(384) ptr @_ZN3Raz8Material10getProgramEv(ptr noundef nonnull align 8 dereferenceable(384) %17) #5
  call void @_ZNK3Raz13ShaderProgram12initTexturesEv(ptr noundef nonnull align 8 dereferenceable(120) %18)
  %19 = load ptr, ptr %5, align 8, !tbaa !5
  %20 = call noundef nonnull align 8 dereferenceable(384) ptr @_ZN3Raz8Material10getProgramEv(ptr noundef nonnull align 8 dereferenceable(384) %19) #5
  call void @_ZNK3Raz13ShaderProgram17initImageTexturesEv(ptr noundef nonnull align 8 dereferenceable(120) %20)
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #5
  %21 = getelementptr inbounds %"class.Raz::MeshRenderer", ptr %10, i32 0, i32 2
  store ptr %21, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #5
  %22 = load ptr, ptr %6, align 8, !tbaa !5
  %23 = call ptr @_ZNSt6vectorIN3Raz15SubmeshRendererESaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %22) #5
  %24 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %7, i32 0, i32 0
  store ptr %23, ptr %24, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #5
  %25 = load ptr, ptr %6, align 8, !tbaa !5
  %26 = call ptr @_ZNSt6vectorIN3Raz15SubmeshRendererESaIS1_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %25) #5
  %27 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %8, i32 0, i32 0
  store ptr %26, ptr %27, align 8
  br label %28

28:                                               ; preds = %34, %2
  %29 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPN3Raz15SubmeshRendererESt6vectorIS2_SaIS2_EEEEbRKNS_17__normal_iteratorIT_T0_EESC_(ptr noundef nonnull align 8 dereferenceable(8) %7, ptr noundef nonnull align 8 dereferenceable(8) %8) #5
  br i1 %29, label %31, label %30

30:                                               ; preds = %28
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #5
  br label %36

31:                                               ; preds = %28
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #5
  %32 = call noundef nonnull align 8 dereferenceable(72) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPN3Raz15SubmeshRendererESt6vectorIS2_SaIS2_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %7) #5
  store ptr %32, ptr %9, align 8, !tbaa !5
  %33 = load ptr, ptr %9, align 8, !tbaa !5
  call void @_ZN3Raz15SubmeshRenderer16setMaterialIndexEm(ptr noundef nonnull align 8 dereferenceable(72) %33, i64 noundef 0)
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #5
  br label %34

34:                                               ; preds = %31
  %35 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPN3Raz15SubmeshRendererESt6vectorIS2_SaIS2_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %7) #5
  br label %28

36:                                               ; preds = %30
  %37 = load ptr, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #5
  ret ptr %37
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIN3Raz8MaterialESaIS1_EE5clearEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef nonnull align 8 dereferenceable(384) ptr @_ZNSt6vectorIN3Raz8MaterialESaIS1_EE12emplace_backIJS1_EEERS1_DpOT_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(384)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(384) ptr @_ZN3Raz8Material10getProgramEv(ptr noundef nonnull align 8 dereferenceable(384)) #2 align 2

declare void @_ZNK3Raz13ShaderProgram14sendAttributesEv(ptr noundef nonnull align 8 dereferenceable(120)) #3

declare void @_ZNK3Raz13ShaderProgram12initTexturesEv(ptr noundef nonnull align 8 dereferenceable(120)) #3

declare void @_ZNK3Raz13ShaderProgram17initImageTexturesEv(ptr noundef nonnull align 8 dereferenceable(120)) #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIN3Raz15SubmeshRendererESaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIN3Raz15SubmeshRendererESaIS1_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN9__gnu_cxxneIPN3Raz15SubmeshRendererESt6vectorIS2_SaIS2_EEEEbRKNS_17__normal_iteratorIT_T0_EESC_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(72) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPN3Raz15SubmeshRendererESt6vectorIS2_SaIS2_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN3Raz15SubmeshRenderer16setMaterialIndexEm(ptr noundef nonnull align 8 dereferenceable(72), i64 noundef) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPN3Raz15SubmeshRendererESt6vectorIS2_SaIS2_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) #2 align 2

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 = { 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 = { "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 = { 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 #5 = { 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"}


; 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.__gnu_cxx::__normal_iterator" = type { ptr }

; 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
define dso_local noundef nonnull align 8 dereferenceable(384) ptr @_ZN3Raz12MeshRenderer11setMaterialEONS_8MaterialE(ptr noundef nonnull align 8 dereferenceable(64) %0, ptr noundef nonnull align 8 dereferenceable(384) %1) local_unnamed_addr #1 align 2 {
  %3 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %4 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %5 = getelementptr inbounds i8, ptr %0, i64 40
  tail call void @_ZNSt6vectorIN3Raz8MaterialESaIS1_EE5clearEv(ptr noundef nonnull align 8 dereferenceable(24) %5) #5
  %6 = tail call noundef nonnull align 8 dereferenceable(384) ptr @_ZNSt6vectorIN3Raz8MaterialESaIS1_EE12emplace_backIJS1_EEERS1_DpOT_(ptr noundef nonnull align 8 dereferenceable(24) %5, ptr noundef nonnull align 8 dereferenceable(384) %1)
  %7 = tail call noundef nonnull align 8 dereferenceable(384) ptr @_ZN3Raz8Material10getProgramEv(ptr noundef nonnull align 8 dereferenceable(384) %6) #5
  tail call void @_ZNK3Raz13ShaderProgram14sendAttributesEv(ptr noundef nonnull align 8 dereferenceable(120) %7)
  %8 = tail call noundef nonnull align 8 dereferenceable(384) ptr @_ZN3Raz8Material10getProgramEv(ptr noundef nonnull align 8 dereferenceable(384) %6) #5
  tail call void @_ZNK3Raz13ShaderProgram12initTexturesEv(ptr noundef nonnull align 8 dereferenceable(120) %8)
  %9 = tail call noundef nonnull align 8 dereferenceable(384) ptr @_ZN3Raz8Material10getProgramEv(ptr noundef nonnull align 8 dereferenceable(384) %6) #5
  tail call void @_ZNK3Raz13ShaderProgram17initImageTexturesEv(ptr noundef nonnull align 8 dereferenceable(120) %9)
  %10 = getelementptr inbounds i8, ptr %0, i64 16
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #5
  %11 = tail call ptr @_ZNSt6vectorIN3Raz15SubmeshRendererESaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %10) #5
  store ptr %11, ptr %3, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #5
  %12 = tail call ptr @_ZNSt6vectorIN3Raz15SubmeshRendererESaIS1_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %10) #5
  store ptr %12, ptr %4, align 8
  %13 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPN3Raz15SubmeshRendererESt6vectorIS2_SaIS2_EEEEbRKNS_17__normal_iteratorIT_T0_EESC_(ptr noundef nonnull align 8 dereferenceable(8) %3, ptr noundef nonnull align 8 dereferenceable(8) %4) #5
  br i1 %13, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %2
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #5
  ret ptr %6

.lr.ph:                                           ; preds = %2, %.lr.ph
  %14 = call noundef nonnull align 8 dereferenceable(72) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPN3Raz15SubmeshRendererESt6vectorIS2_SaIS2_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %3) #5
  call void @_ZN3Raz15SubmeshRenderer16setMaterialIndexEm(ptr noundef nonnull align 8 dereferenceable(72) %14, i64 noundef 0)
  %15 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPN3Raz15SubmeshRendererESt6vectorIS2_SaIS2_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %3) #5
  %16 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPN3Raz15SubmeshRendererESt6vectorIS2_SaIS2_EEEEbRKNS_17__normal_iteratorIT_T0_EESC_(ptr noundef nonnull align 8 dereferenceable(8) %3, ptr noundef nonnull align 8 dereferenceable(8) %4) #5
  br i1 %16, label %.lr.ph, label %._crit_edge
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIN3Raz8MaterialESaIS1_EE5clearEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef nonnull align 8 dereferenceable(384) ptr @_ZNSt6vectorIN3Raz8MaterialESaIS1_EE12emplace_backIJS1_EEERS1_DpOT_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(384)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(384) ptr @_ZN3Raz8Material10getProgramEv(ptr noundef nonnull align 8 dereferenceable(384)) local_unnamed_addr #2 align 2

declare void @_ZNK3Raz13ShaderProgram14sendAttributesEv(ptr noundef nonnull align 8 dereferenceable(120)) local_unnamed_addr #3

declare void @_ZNK3Raz13ShaderProgram12initTexturesEv(ptr noundef nonnull align 8 dereferenceable(120)) local_unnamed_addr #3

declare void @_ZNK3Raz13ShaderProgram17initImageTexturesEv(ptr noundef nonnull align 8 dereferenceable(120)) local_unnamed_addr #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIN3Raz15SubmeshRendererESaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIN3Raz15SubmeshRendererESaIS1_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #2 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN9__gnu_cxxneIPN3Raz15SubmeshRendererESt6vectorIS2_SaIS2_EEEEbRKNS_17__normal_iteratorIT_T0_EESC_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(72) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPN3Raz15SubmeshRendererESt6vectorIS2_SaIS2_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN3Raz15SubmeshRenderer16setMaterialIndexEm(ptr noundef nonnull align 8 dereferenceable(72), i64 noundef) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPN3Raz15SubmeshRendererESt6vectorIS2_SaIS2_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #2 align 2

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 = { 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 = { "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 = { 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 #5 = { 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)"}


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