; LLVM IR from dynexcoin/Dynex :: external/miniupnpc (minihttptestserver)

; 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"

@build_crap.crap = external hidden constant [9 x i8], align 1

; 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 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: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
define dso_local void @build_crap(ptr noundef %0, i64 noundef %1) #2 {
  %3 = alloca ptr, align 8
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i64 %1, ptr %4, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  br label %6

6:                                                ; preds = %15, %2
  %7 = load i64, ptr %4, align 8, !tbaa !9
  %8 = icmp ugt i64 %7, 0
  br i1 %8, label %9, label %24

9:                                                ; preds = %6
  store i64 8, ptr %5, align 8, !tbaa !9
  %10 = load i64, ptr %5, align 8, !tbaa !9
  %11 = load i64, ptr %4, align 8, !tbaa !9
  %12 = icmp ugt i64 %10, %11
  br i1 %12, label %13, label %15

13:                                               ; preds = %9
  %14 = load i64, ptr %4, align 8, !tbaa !9
  store i64 %14, ptr %5, align 8, !tbaa !9
  br label %15

15:                                               ; preds = %13, %9
  %16 = load ptr, ptr %3, align 8, !tbaa !5
  %17 = load i64, ptr %5, align 8, !tbaa !9
  call void @llvm.memcpy.p0.p0.i64(ptr align 1 %16, ptr align 1 @build_crap.crap, i64 %17, i1 false)
  %18 = load i64, ptr %5, align 8, !tbaa !9
  %19 = load ptr, ptr %3, align 8, !tbaa !5
  %20 = getelementptr inbounds i8, ptr %19, i64 %18
  store ptr %20, ptr %3, align 8, !tbaa !5
  %21 = load i64, ptr %5, align 8, !tbaa !9
  %22 = load i64, ptr %4, align 8, !tbaa !9
  %23 = sub i64 %22, %21
  store i64 %23, ptr %4, align 8, !tbaa !9
  br label %6, !llvm.loop !11

24:                                               ; preds = %6
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
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" }
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/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long", !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"

@build_crap.crap = external hidden local_unnamed_addr constant [9 x i8], align 1

; 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: nofree norecurse nosync nounwind memory(readwrite, inaccessiblemem: none) uwtable
define dso_local void @build_crap(ptr nocapture noundef writeonly %0, i64 noundef %1) local_unnamed_addr #1 {
  %.not11 = icmp eq i64 %1, 0
  br i1 %.not11, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %2, %.lr.ph
  %.0913 = phi i64 [ %4, %.lr.ph ], [ %1, %2 ]
  %.01012 = phi ptr [ %3, %.lr.ph ], [ %0, %2 ]
  %spec.select = tail call i64 @llvm.umin.i64(i64 %.0913, i64 8)
  tail call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 1 dereferenceable(1) %.01012, ptr noundef nonnull align 1 dereferenceable(1) @build_crap.crap, i64 %spec.select, i1 false)
  %3 = getelementptr inbounds i8, ptr %.01012, i64 %spec.select
  %4 = sub i64 %.0913, %spec.select
  %.not = icmp eq i64 %4, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !5

._crit_edge:                                      ; preds = %.lr.ph, %2
  ret void
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i64 @llvm.umin.i64(i64, i64) #2

attributes #0 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nofree norecurse nosync nounwind memory(readwrite, inaccessiblemem: none) 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 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }

!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"}


; Effective O3 passes: GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass