; LLVM IR from MinhasKamal/AlgorithmImplementations :: arithmeticExpressions/infixToPostfix (InfixToPostfix)

; 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"

@.str.7 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.8 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.9 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.10 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.11 = external hidden unnamed_addr constant [2 x i8], align 1

; 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
define dso_local noundef i32 @_Z18operatorPrecedenceNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE(ptr noundef %0) #1 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  store i32 0, ptr %3, align 4, !tbaa !9
  %4 = call noundef i32 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE7compareEPKc(ptr noundef nonnull align 8 dereferenceable(32) %0, ptr noundef @.str.7) #3
  %5 = icmp ne i32 %4, 0
  br i1 %5, label %7, label %6

6:                                                ; preds = %1
  store i32 1, ptr %3, align 4, !tbaa !9
  br label %28

7:                                                ; preds = %1
  %8 = call noundef i32 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE7compareEPKc(ptr noundef nonnull align 8 dereferenceable(32) %0, ptr noundef @.str.8) #3
  %9 = icmp ne i32 %8, 0
  br i1 %9, label %11, label %10

10:                                               ; preds = %7
  store i32 2, ptr %3, align 4, !tbaa !9
  br label %27

11:                                               ; preds = %7
  %12 = call noundef i32 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE7compareEPKc(ptr noundef nonnull align 8 dereferenceable(32) %0, ptr noundef @.str.9) #3
  %13 = icmp ne i32 %12, 0
  br i1 %13, label %15, label %14

14:                                               ; preds = %11
  store i32 3, ptr %3, align 4, !tbaa !9
  br label %26

15:                                               ; preds = %11
  %16 = call noundef i32 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE7compareEPKc(ptr noundef nonnull align 8 dereferenceable(32) %0, ptr noundef @.str.10) #3
  %17 = icmp ne i32 %16, 0
  br i1 %17, label %19, label %18

18:                                               ; preds = %15
  store i32 4, ptr %3, align 4, !tbaa !9
  br label %25

19:                                               ; preds = %15
  %20 = call noundef i32 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE7compareEPKc(ptr noundef nonnull align 8 dereferenceable(32) %0, ptr noundef @.str.11) #3
  %21 = icmp ne i32 %20, 0
  br i1 %21, label %23, label %22

22:                                               ; preds = %19
  store i32 5, ptr %3, align 4, !tbaa !9
  br label %24

23:                                               ; preds = %19
  store i32 7, ptr %3, align 4, !tbaa !9
  br label %24

24:                                               ; preds = %23, %22
  br label %25

25:                                               ; preds = %24, %18
  br label %26

26:                                               ; preds = %25, %14
  br label %27

27:                                               ; preds = %26, %10
  br label %28

28:                                               ; preds = %27, %6
  %29 = load i32, ptr %3, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  ret i32 %29
}

; Function Attrs: nounwind
declare noundef i32 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE7compareEPKc(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef) #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 = { nounwind "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, !10, i64 0}
!10 = !{!"int", !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"

@.str.7 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.8 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.9 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.10 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.11 = external hidden unnamed_addr constant [2 x i8], align 1

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef range(i32 1, 8) i32 @_Z18operatorPrecedenceNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE(ptr noundef nonnull %0) local_unnamed_addr #0 {
  %2 = tail call noundef i32 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE7compareEPKc(ptr noundef nonnull align 8 dereferenceable(32) %0, ptr noundef nonnull @.str.7) #2
  %.not = icmp eq i32 %2, 0
  br i1 %.not, label %11, label %3

3:                                                ; preds = %1
  %4 = tail call noundef i32 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE7compareEPKc(ptr noundef nonnull align 8 dereferenceable(32) %0, ptr noundef nonnull @.str.8) #2
  %.not1 = icmp eq i32 %4, 0
  br i1 %.not1, label %11, label %5

5:                                                ; preds = %3
  %6 = tail call noundef i32 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE7compareEPKc(ptr noundef nonnull align 8 dereferenceable(32) %0, ptr noundef nonnull @.str.9) #2
  %.not2 = icmp eq i32 %6, 0
  br i1 %.not2, label %11, label %7

7:                                                ; preds = %5
  %8 = tail call noundef i32 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE7compareEPKc(ptr noundef nonnull align 8 dereferenceable(32) %0, ptr noundef nonnull @.str.10) #2
  %.not3 = icmp eq i32 %8, 0
  br i1 %.not3, label %11, label %9

9:                                                ; preds = %7
  %10 = tail call noundef i32 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE7compareEPKc(ptr noundef nonnull align 8 dereferenceable(32) %0, ptr noundef nonnull @.str.11) #2
  %.not4 = icmp eq i32 %10, 0
  %. = select i1 %.not4, i32 5, i32 7
  br label %11

11:                                               ; preds = %9, %7, %5, %3, %1
  %.0 = phi i32 [ 1, %1 ], [ 2, %3 ], [ 3, %5 ], [ 4, %7 ], [ %., %9 ]
  ret i32 %.0
}

; Function Attrs: nounwind
declare noundef i32 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE7compareEPKc(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef) local_unnamed_addr #1

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 = { nounwind "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 = { 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: GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass