; LLVM IR from freakout42/macrocalc :: mc/src (mcmsg)

; 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"

@stderr = external global ptr, align 8
@.str = external hidden unnamed_addr constant [41 x i8], align 1
@stdin = external global ptr, align 8
@.str.1 = external hidden unnamed_addr constant [2 x i8], align 1
@stdout = 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 ptr, align 8
  %7 = alloca [256 x i8], align 16
  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 8, ptr %6) #7
  store ptr null, ptr %6, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 256, ptr %7) #7
  %8 = load i32, ptr %4, align 4, !tbaa !5
  %9 = icmp ne i32 %8, 2
  br i1 %9, label %10, label %13

10:                                               ; preds = %2
  %11 = load ptr, ptr @stderr, align 8, !tbaa !9
  %12 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %11, ptr noundef @.str) #7
  call void @exit(i32 noundef 2) #8
  unreachable

13:                                               ; preds = %2
  br label %14

14:                                               ; preds = %27, %13
  %15 = getelementptr inbounds [256 x i8], ptr %7, i64 0, i64 0
  %16 = load ptr, ptr @stdin, align 8, !tbaa !9
  %17 = call ptr @fgets(ptr noundef %15, i32 noundef 256, ptr noundef %16)
  %18 = icmp ne ptr %17, null
  br i1 %18, label %19, label %38

19:                                               ; preds = %14
  %20 = load ptr, ptr %5, align 8, !tbaa !9
  %21 = getelementptr inbounds ptr, ptr %20, i64 1
  %22 = load ptr, ptr %21, align 8, !tbaa !9
  %23 = getelementptr inbounds [256 x i8], ptr %7, i64 0, i64 0
  %24 = call ptr @strtok(ptr noundef %23, ptr noundef @.str.1) #7
  %25 = call i32 @strcmp(ptr noundef %22, ptr noundef %24) #9
  %26 = icmp ne i32 %25, 0
  br i1 %26, label %27, label %28

27:                                               ; preds = %19
  br label %14, !llvm.loop !11

28:                                               ; preds = %19
  %29 = call ptr @strtok(ptr noundef null, ptr noundef @.str.1) #7
  store ptr %29, ptr %6, align 8, !tbaa !9
  %30 = icmp eq ptr %29, null
  br i1 %30, label %31, label %33

31:                                               ; preds = %28
  %32 = call i32 @putchar(i32 noundef 10)
  br label %37

33:                                               ; preds = %28
  %34 = load ptr, ptr %6, align 8, !tbaa !9
  %35 = load ptr, ptr @stdout, align 8, !tbaa !9
  %36 = call i32 @fputs(ptr noundef %34, ptr noundef %35)
  br label %37

37:                                               ; preds = %33, %31
  call void @exit(i32 noundef 0) #8
  unreachable

38:                                               ; preds = %14
  call void @llvm.lifetime.end.p0(i64 256, ptr %7) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #7
  ret i32 1
}

; 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 @fprintf(ptr noundef, ptr noundef, ...) #2

; Function Attrs: noreturn nounwind
declare void @exit(i32 noundef) #3

declare ptr @fgets(ptr noundef, i32 noundef, ptr noundef) #4

; Function Attrs: nounwind willreturn memory(read)
declare i32 @strcmp(ptr noundef, ptr noundef) #5

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

; Function Attrs: inlinehint nounwind uwtable
declare i32 @putchar(i32 noundef) #6

declare i32 @fputs(ptr noundef, ptr noundef) #4

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

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 = { 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 #4 = { "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 willreturn memory(read) "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 #6 = { inlinehint 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 #7 = { nounwind }
attributes #8 = { noreturn nounwind }
attributes #9 = { nounwind willreturn memory(read) }

!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"

@stderr = external local_unnamed_addr global ptr, align 8
@.str = external hidden unnamed_addr constant [41 x i8], align 1
@stdin = external local_unnamed_addr global ptr, align 8
@.str.1 = external hidden unnamed_addr constant [2 x i8], align 1
@stdout = external local_unnamed_addr global ptr, align 8

; Function Attrs: nounwind uwtable
define dso_local noundef i32 @main(i32 noundef %0, ptr nocapture noundef readonly %1) local_unnamed_addr #0 {
  %3 = alloca [256 x i8], align 16
  call void @llvm.lifetime.start.p0(i64 256, ptr nonnull %3) #7
  %.not = icmp eq i32 %0, 2
  br i1 %.not, label %.preheader, label %5

.preheader:                                       ; preds = %2
  %4 = getelementptr inbounds i8, ptr %1, i64 8
  br label %8

5:                                                ; preds = %2
  %6 = load ptr, ptr @stderr, align 8, !tbaa !5
  %7 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %6, ptr noundef nonnull @.str) #8
  tail call void @exit(i32 noundef 2) #9
  unreachable

8:                                                ; preds = %.preheader, %11
  %9 = load ptr, ptr @stdin, align 8, !tbaa !5
  %10 = call ptr @fgets(ptr noundef nonnull %3, i32 noundef 256, ptr noundef %9)
  %.not2 = icmp eq ptr %10, null
  br i1 %.not2, label %24, label %11

11:                                               ; preds = %8
  %12 = load ptr, ptr %4, align 8, !tbaa !5
  %13 = call ptr @strtok(ptr noundef nonnull %3, ptr noundef nonnull @.str.1) #7
  %14 = call i32 @strcmp(ptr noundef nonnull dereferenceable(1) %12, ptr noundef nonnull dereferenceable(1) %13) #10
  %.not3 = icmp eq i32 %14, 0
  br i1 %.not3, label %15, label %8, !llvm.loop !9

15:                                               ; preds = %11
  %16 = call ptr @strtok(ptr noundef null, ptr noundef nonnull @.str.1) #7
  %17 = icmp eq ptr %16, null
  br i1 %17, label %18, label %20

18:                                               ; preds = %15
  %19 = call i32 @putchar(i32 noundef 10)
  br label %23

20:                                               ; preds = %15
  %21 = load ptr, ptr @stdout, align 8, !tbaa !5
  %22 = call i32 @fputs(ptr noundef nonnull %16, ptr noundef %21)
  br label %23

23:                                               ; preds = %20, %18
  call void @exit(i32 noundef 0) #9
  unreachable

24:                                               ; preds = %8
  call void @llvm.lifetime.end.p0(i64 256, ptr nonnull %3) #7
  ret i32 1
}

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

; 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 #3

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

; Function Attrs: mustprogress nofree nounwind willreturn memory(argmem: read)
declare i32 @strcmp(ptr nocapture noundef, ptr nocapture noundef) local_unnamed_addr #4

; Function Attrs: mustprogress nofree nounwind willreturn
declare ptr @strtok(ptr noundef, ptr nocapture noundef readonly) local_unnamed_addr #5

; Function Attrs: inlinehint nofree nounwind uwtable
declare noundef i32 @putchar(i32 noundef) local_unnamed_addr #6

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

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

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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 #4 = { mustprogress nofree nounwind willreturn memory(argmem: read) "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 = { mustprogress nofree nounwind willreturn "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 #6 = { inlinehint nofree 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 #7 = { nounwind }
attributes #8 = { cold nounwind }
attributes #9 = { noreturn nounwind }
attributes #10 = { nounwind willreturn memory(read) }

!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/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,LICMPass,LoopSimplifyPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass