; LLVM IR from xxks-kkk/algo :: stack/postfix (postfix2TestMain)

; 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"

@main.usage = external hidden global [25 x i8], align 16
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@optarg = external global ptr, align 8
@.str.1 = external hidden unnamed_addr constant [19 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [21 x i8], align 1
@stderr = external global ptr, align 8

; Function Attrs: nounwind uwtable
define dso_local i32 @main(i32 noundef %0, ptr noundef %1) #0 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  store i32 0, ptr %3, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #5
  store i32 0, ptr %7, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #5
  br label %9

9:                                                ; preds = %23, %2
  %10 = load i32, ptr %4, align 4, !tbaa !5
  %11 = load ptr, ptr %5, align 8, !tbaa !9
  %12 = call i32 @getopt(i32 noundef %10, ptr noundef %11, ptr noundef @.str) #5
  store i32 %12, ptr %6, align 4, !tbaa !5
  %13 = icmp ne i32 %12, -1
  br i1 %13, label %14, label %24

14:                                               ; preds = %9
  %15 = load i32, ptr %6, align 4, !tbaa !5
  switch i32 %15, label %23 [
    i32 98, label %16
    i32 63, label %22
  ]

16:                                               ; preds = %14
  %17 = load ptr, ptr @optarg, align 8, !tbaa !9
  store ptr %17, ptr %8, align 8, !tbaa !9
  %18 = call i32 (ptr, ...) @printf(ptr noundef @.str.1)
  %19 = load ptr, ptr %8, align 8, !tbaa !9
  call void @printFile(ptr noundef %19)
  %20 = call i32 (ptr, ...) @printf(ptr noundef @.str.2)
  %21 = load ptr, ptr %8, align 8, !tbaa !9
  call void @infixTopostfix(ptr noundef %21)
  br label %23

22:                                               ; preds = %14
  store i32 1, ptr %7, align 4, !tbaa !5
  br label %23

23:                                               ; preds = %22, %16, %14
  br label %9, !llvm.loop !11

24:                                               ; preds = %9
  %25 = load i32, ptr %7, align 4, !tbaa !5
  %26 = icmp ne i32 %25, 0
  br i1 %26, label %27, label %33

27:                                               ; preds = %24
  %28 = load ptr, ptr @stderr, align 8, !tbaa !9
  %29 = load ptr, ptr %5, align 8, !tbaa !9
  %30 = getelementptr inbounds ptr, ptr %29, i64 0
  %31 = load ptr, ptr %30, align 8, !tbaa !9
  %32 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %28, ptr noundef @main.usage, ptr noundef %31) #5
  call void @exit(i32 noundef 1) #6
  unreachable

33:                                               ; preds = %24
  call void @exit(i32 noundef 0) #6
  unreachable
}

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

; Function Attrs: nounwind
declare i32 @getopt(i32 noundef, ptr noundef, ptr noundef) #2

declare i32 @printf(ptr noundef, ...) #3

declare void @printFile(ptr noundef) #3

declare void @infixTopostfix(ptr noundef) #3

; Function Attrs: nounwind
declare i32 @fprintf(ptr noundef, ptr noundef, ...) #2

; Function Attrs: noreturn nounwind
declare void @exit(i32 noundef) #4

attributes #0 = { 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { "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 = { noreturn 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 #5 = { nounwind }
attributes #6 = { noreturn 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !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"

@main.usage = external hidden global [25 x i8], align 16
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@optarg = external local_unnamed_addr global ptr, align 8
@.str.1 = external hidden unnamed_addr constant [19 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [21 x i8], align 1
@stderr = external local_unnamed_addr global ptr, align 8

; Function Attrs: noreturn nounwind uwtable
define dso_local noundef i32 @main(i32 noundef %0, ptr noundef %1) local_unnamed_addr #0 {
  br label %.outer

.outer:                                           ; preds = %3, %2
  %.not7 = phi i1 [ true, %2 ], [ false, %3 ]
  br label %3

3:                                                ; preds = %.backedge, %.outer
  %4 = tail call i32 @getopt(i32 noundef %0, ptr noundef %1, ptr noundef nonnull @.str) #5
  switch i32 %4, label %.backedge [
    i32 -1, label %9
    i32 98, label %5
    i32 63, label %.outer
  ], !llvm.loop !5

.backedge:                                        ; preds = %3, %5
  br label %3, !llvm.loop !5

5:                                                ; preds = %3
  %6 = load ptr, ptr @optarg, align 8, !tbaa !7
  %7 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1)
  tail call void @printFile(ptr noundef %6) #5
  %8 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2)
  tail call void @infixTopostfix(ptr noundef %6) #5
  br label %.backedge

9:                                                ; preds = %3
  br i1 %.not7, label %14, label %10

10:                                               ; preds = %9
  %11 = load ptr, ptr @stderr, align 8, !tbaa !7
  %12 = load ptr, ptr %1, align 8, !tbaa !7
  %13 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %11, ptr noundef nonnull @main.usage, ptr noundef %12) #6
  tail call void @exit(i32 noundef 1) #7
  unreachable

14:                                               ; preds = %9
  tail call void @exit(i32 noundef 0) #7
  unreachable
}

; Function Attrs: nounwind
declare i32 @getopt(i32 noundef, ptr noundef, ptr noundef) local_unnamed_addr #1

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

declare void @printFile(ptr noundef) local_unnamed_addr #3

declare void @infixTopostfix(ptr noundef) local_unnamed_addr #3

; Function Attrs: nofree nounwind
declare noundef i32 @fprintf(ptr nocapture noundef, ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: noreturn nounwind
declare void @exit(i32 noundef) local_unnamed_addr #4

attributes #0 = { noreturn 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 = { nofree 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 = { "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 = { noreturn 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 #5 = { nounwind }
attributes #6 = { cold nounwind }
attributes #7 = { noreturn 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 = !{!8, !8, i64 0}
!8 = !{!"any pointer", !9, i64 0}
!9 = !{!"omnipotent char", !10, i64 0}
!10 = !{!"Simple C/C++ TBAA"}


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