; LLVM IR from Samson-Mano/EM_Propogation_simulation :: EM_Propogation_simulation/src/ImGui/imgui.ll/Z15ImFormatStringVPcmPKcP13 (va_list_tag)

; 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: 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: nounwind
declare i32 @vsnprintf(ptr noundef, i64 noundef, ptr noundef, ptr noundef) #1

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i32 @_Z15ImFormatStringVPcmPKcP13__va_list_tag(ptr noundef %0, i64 noundef %1, ptr noundef %2, ptr noundef %3) #2 {
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca i64, align 8
  %8 = alloca ptr, align 8
  %9 = alloca ptr, align 8
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  store ptr %0, ptr %6, align 8, !tbaa !5
  store i64 %1, ptr %7, align 8, !tbaa !9
  store ptr %2, ptr %8, align 8, !tbaa !5
  store ptr %3, ptr %9, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #3
  %12 = load ptr, ptr %6, align 8, !tbaa !5
  %13 = load i64, ptr %7, align 8, !tbaa !9
  %14 = load ptr, ptr %8, align 8, !tbaa !5
  %15 = load ptr, ptr %9, align 8, !tbaa !5
  %16 = call i32 @vsnprintf(ptr noundef %12, i64 noundef %13, ptr noundef %14, ptr noundef %15) #3
  store i32 %16, ptr %10, align 4, !tbaa !11
  %17 = load ptr, ptr %6, align 8, !tbaa !5
  %18 = icmp eq ptr %17, null
  br i1 %18, label %19, label %21

19:                                               ; preds = %4
  %20 = load i32, ptr %10, align 4, !tbaa !11
  store i32 %20, ptr %5, align 4
  store i32 1, ptr %11, align 4
  br label %39

21:                                               ; preds = %4
  %22 = load i32, ptr %10, align 4, !tbaa !11
  %23 = icmp eq i32 %22, -1
  br i1 %23, label %29, label %24

24:                                               ; preds = %21
  %25 = load i32, ptr %10, align 4, !tbaa !11
  %26 = load i64, ptr %7, align 8, !tbaa !9
  %27 = trunc i64 %26 to i32
  %28 = icmp sge i32 %25, %27
  br i1 %28, label %29, label %33

29:                                               ; preds = %24, %21
  %30 = load i64, ptr %7, align 8, !tbaa !9
  %31 = trunc i64 %30 to i32
  %32 = sub nsw i32 %31, 1
  store i32 %32, ptr %10, align 4, !tbaa !11
  br label %33

33:                                               ; preds = %29, %24
  %34 = load ptr, ptr %6, align 8, !tbaa !5
  %35 = load i32, ptr %10, align 4, !tbaa !11
  %36 = sext i32 %35 to i64
  %37 = getelementptr inbounds i8, ptr %34, i64 %36
  store i8 0, ptr %37, align 1, !tbaa !13
  %38 = load i32, ptr %10, align 4, !tbaa !11
  store i32 %38, ptr %5, align 4
  store i32 1, ptr %11, align 4
  br label %39

39:                                               ; preds = %33, %19
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #3
  %40 = load i32, ptr %5, align 4
  ret i32 %40
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 = { 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 = !{!"long", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = !{!7, !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"

; Function Attrs: nofree nounwind
declare noundef i32 @vsnprintf(ptr nocapture noundef, i64 noundef, ptr nocapture noundef readonly, ptr noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nofree nounwind uwtable
define dso_local noundef i32 @_Z15ImFormatStringVPcmPKcP13__va_list_tag(ptr noundef %0, i64 noundef %1, ptr nocapture noundef readonly %2, ptr noundef %3) local_unnamed_addr #1 {
  %5 = tail call i32 @vsnprintf(ptr noundef %0, i64 noundef %1, ptr noundef %2, ptr noundef %3) #2
  %6 = icmp eq ptr %0, null
  br i1 %6, label %13, label %7

7:                                                ; preds = %4
  %8 = icmp ne i32 %5, -1
  %9 = trunc i64 %1 to i32
  %.not = icmp slt i32 %5, %9
  %or.cond = and i1 %8, %.not
  %10 = add nsw i32 %9, -1
  %.0 = select i1 %or.cond, i32 %5, i32 %10
  %11 = sext i32 %.0 to i64
  %12 = getelementptr inbounds i8, ptr %0, i64 %11
  store i8 0, ptr %12, align 1, !tbaa !5
  br label %13

13:                                               ; preds = %4, %7
  %.013 = phi i32 [ %.0, %7 ], [ %5, %4 ]
  ret i32 %.013
}

attributes #0 = { 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 #1 = { mustprogress 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 #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)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}


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