; LLVM IR from pictools/pica :: test/gtest/fused-src/gtest/gtest-all.ll (ZN7testing8internal6String6FormatEPKcz)

; 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"

%"class.testing::internal::String" = type { ptr, i64 }
%struct.__va_list_tag = type { i32, i32, ptr, ptr }

@.str.83 = external hidden unnamed_addr constant [38 x i8], align 1

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN7testing8internal6StringC2EPKc(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef) unnamed_addr #0 align 2

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

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

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN7testing8internal6StringC2EPKcm(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef, i64 noundef) unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN7testing8internal6String6FormatEPKcz(ptr dead_on_unwind noalias writable sret(%"class.testing::internal::String") align 8 %0, ptr noundef %1, ...) #0 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca [1 x %struct.__va_list_tag], align 16
  %6 = alloca [4096 x i8], align 16
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  store ptr %0, ptr %3, align 8
  store ptr %1, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 24, ptr %5) #4
  %10 = getelementptr inbounds [1 x %struct.__va_list_tag], ptr %5, i64 0, i64 0
  call void @llvm.va_start.p0(ptr %10)
  call void @llvm.lifetime.start.p0(i64 4096, ptr %6) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #4
  store i32 4096, ptr %7, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #4
  %11 = getelementptr inbounds [4096 x i8], ptr %6, i64 0, i64 0
  %12 = load ptr, ptr %4, align 8, !tbaa !5
  %13 = getelementptr inbounds [1 x %struct.__va_list_tag], ptr %5, i64 0, i64 0
  %14 = call i32 @vsnprintf(ptr noundef %11, i64 noundef 4096, ptr noundef %12, ptr noundef %13) #4
  store i32 %14, ptr %8, align 4, !tbaa !9
  %15 = getelementptr inbounds [1 x %struct.__va_list_tag], ptr %5, i64 0, i64 0
  call void @llvm.va_end.p0(ptr %15)
  %16 = load i32, ptr %8, align 4, !tbaa !9
  %17 = icmp slt i32 %16, 0
  br i1 %17, label %21, label %18

18:                                               ; preds = %2
  %19 = load i32, ptr %8, align 4, !tbaa !9
  %20 = icmp sge i32 %19, 4096
  br i1 %20, label %21, label %22

21:                                               ; preds = %18, %2
  call void @_ZN7testing8internal6StringC2EPKc(ptr noundef nonnull align 8 dereferenceable(16) %0, ptr noundef @.str.83)
  store i32 1, ptr %9, align 4
  br label %26

22:                                               ; preds = %18
  %23 = getelementptr inbounds [4096 x i8], ptr %6, i64 0, i64 0
  %24 = load i32, ptr %8, align 4, !tbaa !9
  %25 = sext i32 %24 to i64
  call void @_ZN7testing8internal6StringC2EPKcm(ptr noundef nonnull align 8 dereferenceable(16) %0, ptr noundef %23, i64 noundef %25)
  store i32 1, ptr %9, align 4
  br label %26

26:                                               ; preds = %22, %21
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #4
  call void @llvm.lifetime.end.p0(i64 4096, ptr %6) #4
  call void @llvm.lifetime.end.p0(i64 24, ptr %5) #4
  ret void
}

; Function Attrs: nocallback nofree nosync nounwind willreturn
declare void @llvm.va_start.p0(ptr) #2

; Function Attrs: nounwind
declare i32 @vsnprintf(ptr noundef, i64 noundef, ptr noundef, ptr noundef) #3

; Function Attrs: nocallback nofree nosync nounwind willreturn
declare void @llvm.va_end.p0(ptr) #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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nocallback nofree nosync nounwind willreturn }
attributes #3 = { 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 = { 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"

%"class.testing::internal::String" = type { ptr, i64 }
%struct.__va_list_tag = type { i32, i32, ptr, ptr }

@.str.83 = external hidden unnamed_addr constant [38 x i8], align 1

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN7testing8internal6StringC2EPKc(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef) unnamed_addr #0 align 2

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

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

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN7testing8internal6StringC2EPKcm(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef, i64 noundef) unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN7testing8internal6String6FormatEPKcz(ptr dead_on_unwind noalias writable sret(%"class.testing::internal::String") align 8 %0, ptr nocapture noundef readonly %1, ...) local_unnamed_addr #0 align 2 {
  %3 = alloca [1 x %struct.__va_list_tag], align 16
  %4 = alloca [4096 x i8], align 16
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %3) #4
  call void @llvm.va_start.p0(ptr nonnull %3)
  call void @llvm.lifetime.start.p0(i64 4096, ptr nonnull %4) #4
  %5 = call i32 @vsnprintf(ptr noundef nonnull %4, i64 noundef 4096, ptr noundef %1, ptr noundef nonnull %3) #4
  call void @llvm.va_end.p0(ptr nonnull %3)
  %or.cond = icmp ugt i32 %5, 4095
  br i1 %or.cond, label %6, label %7

6:                                                ; preds = %2
  call void @_ZN7testing8internal6StringC2EPKc(ptr noundef nonnull align 8 dereferenceable(16) %0, ptr noundef nonnull @.str.83)
  br label %9

7:                                                ; preds = %2
  %8 = zext nneg i32 %5 to i64
  call void @_ZN7testing8internal6StringC2EPKcm(ptr noundef nonnull align 8 dereferenceable(16) %0, ptr noundef nonnull %4, i64 noundef %8)
  br label %9

9:                                                ; preds = %7, %6
  call void @llvm.lifetime.end.p0(i64 4096, ptr nonnull %4) #4
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %3) #4
  ret void
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn
declare void @llvm.va_start.p0(ptr) #2

; Function Attrs: nofree nounwind
declare noundef i32 @vsnprintf(ptr nocapture noundef, i64 noundef, ptr nocapture noundef readonly, ptr noundef) local_unnamed_addr #3

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn
declare void @llvm.va_end.p0(ptr) #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 nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { mustprogress nocallback nofree nosync nounwind willreturn }
attributes #3 = { 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 #4 = { 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: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass