; LLVM IR from Py-Contributors/AlgorithmsAndDataStructure :: C++/Algorithms/Pattern Matching (z-algorithm)

; 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: mustprogress uwtable
define dso_local noundef ptr @_Z9zFunctionNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE(ptr noundef %0) #0 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #5
  %9 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #5
  %10 = trunc i64 %9 to i32
  store i32 %10, ptr %3, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #5
  %11 = load i32, ptr %3, align 4, !tbaa !9
  %12 = sext i32 %11 to i64
  %13 = call { i64, i1 } @llvm.umul.with.overflow.i64(i64 %12, i64 4)
  %14 = extractvalue { i64, i1 } %13, 1
  %15 = extractvalue { i64, i1 } %13, 0
  %16 = select i1 %14, i64 -1, i64 %15
  %17 = call noalias noundef nonnull ptr @_Znam(i64 noundef %16) #6
  store ptr %17, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #5
  store i32 0, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #5
  store i32 0, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #5
  store i32 0, ptr %7, align 4, !tbaa !9
  br label %18

18:                                               ; preds = %123, %1
  %19 = load i32, ptr %7, align 4, !tbaa !9
  %20 = load i32, ptr %3, align 4, !tbaa !9
  %21 = icmp slt i32 %19, %20
  br i1 %21, label %23, label %22

22:                                               ; preds = %18
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #5
  br label %126

23:                                               ; preds = %18
  %24 = load i32, ptr %7, align 4, !tbaa !9
  %25 = load i32, ptr %6, align 4, !tbaa !9
  %26 = icmp sgt i32 %24, %25
  br i1 %26, label %27, label %63

27:                                               ; preds = %23
  %28 = load i32, ptr %7, align 4, !tbaa !9
  store i32 %28, ptr %5, align 4, !tbaa !9
  %29 = load i32, ptr %7, align 4, !tbaa !9
  store i32 %29, ptr %6, align 4, !tbaa !9
  br label %30

30:                                               ; preds = %50, %27
  %31 = load i32, ptr %7, align 4, !tbaa !9
  %32 = load i32, ptr %3, align 4, !tbaa !9
  %33 = icmp slt i32 %31, %32
  br i1 %33, label %34, label %48

34:                                               ; preds = %30
  %35 = load i32, ptr %6, align 4, !tbaa !9
  %36 = load i32, ptr %5, align 4, !tbaa !9
  %37 = sub nsw i32 %35, %36
  %38 = sext i32 %37 to i64
  %39 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %38)
  %40 = load i8, ptr %39, align 1, !tbaa !11
  %41 = sext i8 %40 to i32
  %42 = load i32, ptr %6, align 4, !tbaa !9
  %43 = sext i32 %42 to i64
  %44 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %43)
  %45 = load i8, ptr %44, align 1, !tbaa !11
  %46 = sext i8 %45 to i32
  %47 = icmp eq i32 %41, %46
  br label %48

48:                                               ; preds = %34, %30
  %49 = phi i1 [ false, %30 ], [ %47, %34 ]
  br i1 %49, label %50, label %53

50:                                               ; preds = %48
  %51 = load i32, ptr %6, align 4, !tbaa !9
  %52 = add nsw i32 %51, 1
  store i32 %52, ptr %6, align 4, !tbaa !9
  br label %30, !llvm.loop !12

53:                                               ; preds = %48
  %54 = load i32, ptr %6, align 4, !tbaa !9
  %55 = load i32, ptr %5, align 4, !tbaa !9
  %56 = sub nsw i32 %54, %55
  %57 = load ptr, ptr %4, align 8, !tbaa !5
  %58 = load i32, ptr %7, align 4, !tbaa !9
  %59 = sext i32 %58 to i64
  %60 = getelementptr inbounds i32, ptr %57, i64 %59
  store i32 %56, ptr %60, align 4, !tbaa !9
  %61 = load i32, ptr %6, align 4, !tbaa !9
  %62 = add nsw i32 %61, -1
  store i32 %62, ptr %6, align 4, !tbaa !9
  br label %122

63:                                               ; preds = %23
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #5
  %64 = load i32, ptr %7, align 4, !tbaa !9
  %65 = load i32, ptr %5, align 4, !tbaa !9
  %66 = sub nsw i32 %64, %65
  store i32 %66, ptr %8, align 4, !tbaa !9
  %67 = load ptr, ptr %4, align 8, !tbaa !5
  %68 = load i32, ptr %8, align 4, !tbaa !9
  %69 = sext i32 %68 to i64
  %70 = getelementptr inbounds i32, ptr %67, i64 %69
  %71 = load i32, ptr %70, align 4, !tbaa !9
  %72 = load i32, ptr %6, align 4, !tbaa !9
  %73 = load i32, ptr %7, align 4, !tbaa !9
  %74 = sub nsw i32 %72, %73
  %75 = icmp sle i32 %71, %74
  br i1 %75, label %76, label %86

76:                                               ; preds = %63
  %77 = load ptr, ptr %4, align 8, !tbaa !5
  %78 = load i32, ptr %8, align 4, !tbaa !9
  %79 = sext i32 %78 to i64
  %80 = getelementptr inbounds i32, ptr %77, i64 %79
  %81 = load i32, ptr %80, align 4, !tbaa !9
  %82 = load ptr, ptr %4, align 8, !tbaa !5
  %83 = load i32, ptr %7, align 4, !tbaa !9
  %84 = sext i32 %83 to i64
  %85 = getelementptr inbounds i32, ptr %82, i64 %84
  store i32 %81, ptr %85, align 4, !tbaa !9
  br label %121

86:                                               ; preds = %63
  %87 = load i32, ptr %7, align 4, !tbaa !9
  store i32 %87, ptr %5, align 4, !tbaa !9
  br label %88

88:                                               ; preds = %108, %86
  %89 = load i32, ptr %6, align 4, !tbaa !9
  %90 = load i32, ptr %3, align 4, !tbaa !9
  %91 = icmp slt i32 %89, %90
  br i1 %91, label %92, label %106

92:                                               ; preds = %88
  %93 = load i32, ptr %6, align 4, !tbaa !9
  %94 = load i32, ptr %5, align 4, !tbaa !9
  %95 = sub nsw i32 %93, %94
  %96 = sext i32 %95 to i64
  %97 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %96)
  %98 = load i8, ptr %97, align 1, !tbaa !11
  %99 = sext i8 %98 to i32
  %100 = load i32, ptr %6, align 4, !tbaa !9
  %101 = sext i32 %100 to i64
  %102 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %101)
  %103 = load i8, ptr %102, align 1, !tbaa !11
  %104 = sext i8 %103 to i32
  %105 = icmp eq i32 %99, %104
  br label %106

106:                                              ; preds = %92, %88
  %107 = phi i1 [ false, %88 ], [ %105, %92 ]
  br i1 %107, label %108, label %111

108:                                              ; preds = %106
  %109 = load i32, ptr %6, align 4, !tbaa !9
  %110 = add nsw i32 %109, 1
  store i32 %110, ptr %6, align 4, !tbaa !9
  br label %88, !llvm.loop !14

111:                                              ; preds = %106
  %112 = load i32, ptr %6, align 4, !tbaa !9
  %113 = load i32, ptr %5, align 4, !tbaa !9
  %114 = sub nsw i32 %112, %113
  %115 = load ptr, ptr %4, align 8, !tbaa !5
  %116 = load i32, ptr %7, align 4, !tbaa !9
  %117 = sext i32 %116 to i64
  %118 = getelementptr inbounds i32, ptr %115, i64 %117
  store i32 %114, ptr %118, align 4, !tbaa !9
  %119 = load i32, ptr %6, align 4, !tbaa !9
  %120 = add nsw i32 %119, -1
  store i32 %120, ptr %6, align 4, !tbaa !9
  br label %121

121:                                              ; preds = %111, %76
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #5
  br label %122

122:                                              ; preds = %121, %53
  br label %123

123:                                              ; preds = %122
  %124 = load i32, ptr %7, align 4, !tbaa !9
  %125 = add nsw i32 %124, 1
  store i32 %125, ptr %7, align 4, !tbaa !9
  br label %18, !llvm.loop !15

126:                                              ; preds = %22
  %127 = load ptr, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #5
  ret ptr %127
}

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

; Function Attrs: mustprogress nounwind uwtable
declare noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32)) #2 align 2

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare { i64, i1 } @llvm.umul.with.overflow.i64(i64, i64) #3

; Function Attrs: nobuiltin allocsize(0)
declare noundef nonnull ptr @_Znam(i64 noundef) #4

; Function Attrs: mustprogress nounwind uwtable
declare noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32), i64 noundef) #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 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #4 = { nobuiltin allocsize(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 }
attributes #6 = { builtin allocsize(0) }

!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, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!7, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}
!14 = distinct !{!14, !13}
!15 = distinct !{!15, !13}


; 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 uwtable
define dso_local noalias noundef nonnull ptr @_Z9zFunctionNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE(ptr noundef nonnull %0) local_unnamed_addr #0 {
  %2 = tail call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #3
  %3 = trunc i64 %2 to i32
  %sext = shl i64 %2, 32
  %4 = lshr exact i64 %sext, 30
  %.inv = icmp sgt i64 %sext, -1
  %5 = select i1 %.inv, i64 %4, i64 -1
  %6 = tail call noalias noundef nonnull ptr @_Znam(i64 noundef %5) #4
  %7 = icmp sgt i32 %3, 0
  br i1 %7, label %.lr.ph56.preheader, label %._crit_edge

.lr.ph56.preheader:                               ; preds = %1
  %8 = and i64 %2, 2147483647
  %wide.trip.count = and i64 %2, 2147483647
  br label %.lr.ph56

._crit_edge:                                      ; preds = %40, %1
  ret ptr %6

.lr.ph56:                                         ; preds = %.lr.ph56.preheader, %40
  %indvars.iv58 = phi i64 [ 0, %.lr.ph56.preheader ], [ %indvars.iv.next59, %40 ]
  %.055 = phi i32 [ 0, %.lr.ph56.preheader ], [ %.2, %40 ]
  %.04453 = phi i32 [ 0, %.lr.ph56.preheader ], [ %.4, %40 ]
  %indvars63 = trunc i64 %indvars.iv58 to i32
  %9 = sext i32 %.04453 to i64
  %10 = icmp sgt i64 %indvars.iv58, %9
  br i1 %10, label %.preheader, label %21

.preheader:                                       ; preds = %.lr.ph56, %.preheader
  %indvars.iv60 = phi i64 [ %indvars.iv.next61, %.preheader ], [ %indvars.iv58, %.lr.ph56 ]
  %11 = sub nuw nsw i64 %indvars.iv60, %indvars.iv58
  %12 = tail call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %11)
  %13 = load i8, ptr %12, align 1, !tbaa !5
  %14 = tail call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %indvars.iv60)
  %15 = load i8, ptr %14, align 1, !tbaa !5
  %16 = icmp eq i8 %13, %15
  %indvars.iv.next61 = add nuw nsw i64 %indvars.iv60, 1
  br i1 %16, label %.preheader, label %.critedge, !llvm.loop !8

.critedge:                                        ; preds = %.preheader
  %17 = trunc nuw nsw i64 %indvars.iv60 to i32
  %18 = trunc nuw nsw i64 %11 to i32
  %19 = getelementptr inbounds i32, ptr %6, i64 %indvars.iv58
  store i32 %18, ptr %19, align 4, !tbaa !10
  %20 = add nsw i32 %17, -1
  br label %40

21:                                               ; preds = %.lr.ph56
  %22 = sext i32 %.055 to i64
  %23 = sub nsw i64 %indvars.iv58, %22
  %24 = getelementptr inbounds i32, ptr %6, i64 %23
  %25 = load i32, ptr %24, align 4, !tbaa !10
  %26 = sub nsw i32 %.04453, %indvars63
  %.not = icmp sgt i32 %25, %26
  br i1 %.not, label %.preheader49, label %28

.preheader49:                                     ; preds = %21
  %27 = icmp slt i32 %.04453, %3
  br i1 %27, label %.lr.ph, label %.critedge2

28:                                               ; preds = %21
  %29 = getelementptr inbounds i32, ptr %6, i64 %indvars.iv58
  store i32 %25, ptr %29, align 4, !tbaa !10
  br label %40

.lr.ph:                                           ; preds = %.preheader49, %36
  %indvars.iv = phi i64 [ %indvars.iv.next, %36 ], [ %9, %.preheader49 ]
  %30 = sub nsw i64 %indvars.iv, %indvars.iv58
  %31 = tail call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %30)
  %32 = load i8, ptr %31, align 1, !tbaa !5
  %33 = tail call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %indvars.iv)
  %34 = load i8, ptr %33, align 1, !tbaa !5
  %35 = icmp eq i8 %32, %34
  br i1 %35, label %36, label %.critedge2.loopexit.split.loop.exit65

36:                                               ; preds = %.lr.ph
  %indvars.iv.next = add nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %8
  br i1 %exitcond.not, label %.critedge2.loopexit, label %.lr.ph, !llvm.loop !12

.critedge2.loopexit.split.loop.exit65:            ; preds = %.lr.ph
  %37 = trunc nsw i64 %indvars.iv to i32
  br label %.critedge2.loopexit

.critedge2.loopexit:                              ; preds = %36, %.critedge2.loopexit.split.loop.exit65
  %.246.lcssa.ph = phi i32 [ %37, %.critedge2.loopexit.split.loop.exit65 ], [ %3, %36 ]
  %.pre = sub nsw i32 %.246.lcssa.ph, %indvars63
  br label %.critedge2

.critedge2:                                       ; preds = %.critedge2.loopexit, %.preheader49
  %.pre-phi = phi i32 [ %.pre, %.critedge2.loopexit ], [ %26, %.preheader49 ]
  %.246.lcssa = phi i32 [ %.246.lcssa.ph, %.critedge2.loopexit ], [ %.04453, %.preheader49 ]
  %38 = getelementptr inbounds i32, ptr %6, i64 %indvars.iv58
  store i32 %.pre-phi, ptr %38, align 4, !tbaa !10
  %39 = add nsw i32 %.246.lcssa, -1
  br label %40

40:                                               ; preds = %28, %.critedge2, %.critedge
  %.4 = phi i32 [ %20, %.critedge ], [ %.04453, %28 ], [ %39, %.critedge2 ]
  %.2 = phi i32 [ %indvars63, %.critedge ], [ %.055, %28 ], [ %indvars63, %.critedge2 ]
  %indvars.iv.next59 = add nuw nsw i64 %indvars.iv58, 1
  %exitcond64.not = icmp eq i64 %indvars.iv.next59, %wide.trip.count
  br i1 %exitcond64.not, label %._crit_edge, label %.lr.ph56, !llvm.loop !13
}

; Function Attrs: mustprogress nounwind uwtable
declare noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #1 align 2

; Function Attrs: nobuiltin allocsize(0)
declare noundef nonnull ptr @_Znam(i64 noundef) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32), i64 noundef) local_unnamed_addr #1 align 2

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 = { nobuiltin allocsize(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 }
attributes #4 = { builtin allocsize(0) }

!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"}
!10 = !{!11, !11, i64 0}
!11 = !{!"int", !6, i64 0}
!12 = distinct !{!12, !9}
!13 = distinct !{!13, !9}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass