; LLVM IR from caryll/otfcc :: dep/extern (sds)

; 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: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #1

; Function Attrs: inlinehint nounwind uwtable
declare hidden i64 @sdslen(ptr noundef) #2

; Function Attrs: inlinehint nounwind uwtable
declare hidden void @sdssetlen(ptr noundef, i64 noundef) #2

; Function Attrs: nounwind uwtable
declare dso_local ptr @sdsMakeRoomFor(ptr noundef, i64 noundef) #3

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

17:                                               ; preds = %3
  store ptr null, ptr %4, align 8
  store i32 1, ptr %9, align 4
  br label %34

18:                                               ; preds = %3
  %19 = load ptr, ptr %5, align 8, !tbaa !5
  %20 = load i64, ptr %8, align 8, !tbaa !9
  %21 = getelementptr inbounds i8, ptr %19, i64 %20
  %22 = load ptr, ptr %6, align 8, !tbaa !5
  %23 = load i64, ptr %7, align 8, !tbaa !9
  call void @llvm.memcpy.p0.p0.i64(ptr align 1 %21, ptr align 1 %22, i64 %23, i1 false)
  %24 = load ptr, ptr %5, align 8, !tbaa !5
  %25 = load i64, ptr %8, align 8, !tbaa !9
  %26 = load i64, ptr %7, align 8, !tbaa !9
  %27 = add i64 %25, %26
  call void @sdssetlen(ptr noundef %24, i64 noundef %27)
  %28 = load ptr, ptr %5, align 8, !tbaa !5
  %29 = load i64, ptr %8, align 8, !tbaa !9
  %30 = load i64, ptr %7, align 8, !tbaa !9
  %31 = add i64 %29, %30
  %32 = getelementptr inbounds i8, ptr %28, i64 %31
  store i8 0, ptr %32, align 1, !tbaa !11
  %33 = load ptr, ptr %5, align 8, !tbaa !5
  store ptr %33, ptr %4, align 8
  store i32 1, ptr %9, align 4
  br label %34

34:                                               ; preds = %18, %17
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #4
  %35 = load ptr, ptr %4, align 8
  ret ptr %35
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #3 = { 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 #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/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = !{!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: mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #0

; Function Attrs: inlinehint nounwind uwtable
declare hidden i64 @sdslen(ptr noundef) local_unnamed_addr #1

; Function Attrs: inlinehint nounwind uwtable
declare hidden void @sdssetlen(ptr noundef, i64 noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
declare dso_local ptr @sdsMakeRoomFor(ptr noundef, i64 noundef) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
define dso_local ptr @sdscatlen(ptr noundef %0, ptr nocapture noundef readonly %1, i64 noundef %2) local_unnamed_addr #2 {
  %4 = tail call i64 @sdslen(ptr noundef %0)
  %5 = tail call ptr @sdsMakeRoomFor(ptr noundef %0, i64 noundef %2)
  %6 = icmp eq ptr %5, null
  br i1 %6, label %11, label %7

7:                                                ; preds = %3
  %8 = getelementptr inbounds i8, ptr %5, i64 %4
  tail call void @llvm.memcpy.p0.p0.i64(ptr nonnull align 1 %8, ptr align 1 %1, i64 %2, i1 false)
  %9 = add i64 %4, %2
  tail call void @sdssetlen(ptr noundef nonnull %5, i64 noundef %9)
  %10 = getelementptr inbounds i8, ptr %5, i64 %9
  store i8 0, ptr %10, align 1, !tbaa !5
  br label %11

11:                                               ; preds = %3, %7
  ret ptr %5
}

attributes #0 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { 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" }

!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/C++ TBAA"}


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