; LLVM IR from microsoft/ntttcp-for-linux :: src (util)

; 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"

@.str.48 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.49 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.50 = external hidden unnamed_addr constant [6 x i8], align 1
@.str.51 = external hidden unnamed_addr constant [7 x i8], align 1
@.str.52 = external hidden unnamed_addr constant [7 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 nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
define dso_local i32 @escape_char_for_xml(ptr noundef %0, ptr noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i64, align 8
  %7 = alloca i64, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  store i32 0, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  store i64 0, ptr %6, align 8, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  store i64 0, ptr %7, align 8, !tbaa !11
  store i64 0, ptr %6, align 8, !tbaa !11
  br label %8

8:                                                ; preds = %64, %2
  %9 = load ptr, ptr %3, align 8, !tbaa !5
  %10 = load i64, ptr %6, align 8, !tbaa !11
  %11 = getelementptr inbounds i8, ptr %9, i64 %10
  %12 = load i8, ptr %11, align 1, !tbaa !13
  %13 = icmp ne i8 %12, 0
  br i1 %13, label %14, label %67

14:                                               ; preds = %8
  %15 = load i32, ptr %5, align 4, !tbaa !9
  %16 = add i32 %15, 1
  store i32 %16, ptr %5, align 4, !tbaa !9
  %17 = load ptr, ptr %3, align 8, !tbaa !5
  %18 = load i64, ptr %6, align 8, !tbaa !11
  %19 = getelementptr inbounds i8, ptr %17, i64 %18
  %20 = load i8, ptr %19, align 1, !tbaa !13
  %21 = sext i8 %20 to i32
  switch i32 %21, label %52 [
    i32 62, label %22
    i32 60, label %28
    i32 38, label %34
    i32 39, label %40
    i32 34, label %46
    i32 10, label %63
  ]

22:                                               ; preds = %14
  %23 = load ptr, ptr %4, align 8, !tbaa !5
  %24 = load i64, ptr %7, align 8, !tbaa !11
  %25 = getelementptr inbounds i8, ptr %23, i64 %24
  call void @llvm.memcpy.p0.p0.i64(ptr align 1 %25, ptr align 1 @.str.48, i64 4, i1 false)
  %26 = load i64, ptr %7, align 8, !tbaa !11
  %27 = add i64 %26, 4
  store i64 %27, ptr %7, align 8, !tbaa !11
  br label %63

28:                                               ; preds = %14
  %29 = load ptr, ptr %4, align 8, !tbaa !5
  %30 = load i64, ptr %7, align 8, !tbaa !11
  %31 = getelementptr inbounds i8, ptr %29, i64 %30
  call void @llvm.memcpy.p0.p0.i64(ptr align 1 %31, ptr align 1 @.str.49, i64 4, i1 false)
  %32 = load i64, ptr %7, align 8, !tbaa !11
  %33 = add i64 %32, 4
  store i64 %33, ptr %7, align 8, !tbaa !11
  br label %63

34:                                               ; preds = %14
  %35 = load ptr, ptr %4, align 8, !tbaa !5
  %36 = load i64, ptr %7, align 8, !tbaa !11
  %37 = getelementptr inbounds i8, ptr %35, i64 %36
  call void @llvm.memcpy.p0.p0.i64(ptr align 1 %37, ptr align 1 @.str.50, i64 5, i1 false)
  %38 = load i64, ptr %7, align 8, !tbaa !11
  %39 = add i64 %38, 5
  store i64 %39, ptr %7, align 8, !tbaa !11
  br label %63

40:                                               ; preds = %14
  %41 = load ptr, ptr %4, align 8, !tbaa !5
  %42 = load i64, ptr %7, align 8, !tbaa !11
  %43 = getelementptr inbounds i8, ptr %41, i64 %42
  call void @llvm.memcpy.p0.p0.i64(ptr align 1 %43, ptr align 1 @.str.51, i64 6, i1 false)
  %44 = load i64, ptr %7, align 8, !tbaa !11
  %45 = add i64 %44, 6
  store i64 %45, ptr %7, align 8, !tbaa !11
  br label %63

46:                                               ; preds = %14
  %47 = load ptr, ptr %4, align 8, !tbaa !5
  %48 = load i64, ptr %7, align 8, !tbaa !11
  %49 = getelementptr inbounds i8, ptr %47, i64 %48
  call void @llvm.memcpy.p0.p0.i64(ptr align 1 %49, ptr align 1 @.str.52, i64 6, i1 false)
  %50 = load i64, ptr %7, align 8, !tbaa !11
  %51 = add i64 %50, 6
  store i64 %51, ptr %7, align 8, !tbaa !11
  br label %63

52:                                               ; preds = %14
  %53 = load i32, ptr %5, align 4, !tbaa !9
  %54 = add i32 %53, -1
  store i32 %54, ptr %5, align 4, !tbaa !9
  %55 = load ptr, ptr %4, align 8, !tbaa !5
  %56 = load i64, ptr %7, align 8, !tbaa !11
  %57 = getelementptr inbounds i8, ptr %55, i64 %56
  %58 = load ptr, ptr %3, align 8, !tbaa !5
  %59 = load i64, ptr %6, align 8, !tbaa !11
  %60 = getelementptr inbounds i8, ptr %58, i64 %59
  call void @llvm.memcpy.p0.p0.i64(ptr align 1 %57, ptr align 1 %60, i64 1, i1 false)
  %61 = load i64, ptr %7, align 8, !tbaa !11
  %62 = add i64 %61, 1
  store i64 %62, ptr %7, align 8, !tbaa !11
  br label %63

63:                                               ; preds = %52, %46, %40, %34, %28, %22, %14
  br label %64

64:                                               ; preds = %63
  %65 = load i64, ptr %6, align 8, !tbaa !11
  %66 = add i64 %65, 1
  store i64 %66, ptr %6, align 8, !tbaa !11
  br label %8, !llvm.loop !14

67:                                               ; preds = %8
  %68 = load i32, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  ret i32 %68
}

; 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) #2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
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 = !{!"int", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"long", !7, i64 0}
!13 = !{!7, !7, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"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"

@.str.48 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.49 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.50 = external hidden unnamed_addr constant [6 x i8], align 1
@.str.51 = external hidden unnamed_addr constant [7 x i8], align 1
@.str.52 = external hidden unnamed_addr constant [7 x i8], align 1

; Function Attrs: nofree norecurse nosync nounwind memory(argmem: readwrite) uwtable
define dso_local i32 @escape_char_for_xml(ptr nocapture noundef readonly %0, ptr nocapture noundef writeonly %1) local_unnamed_addr #0 {
  %3 = load i8, ptr %0, align 1
  %.not31 = icmp eq i8 %3, 0
  br i1 %.not31, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %2
  %4 = load i32, ptr @.str.49, align 1
  %5 = load i32, ptr @.str.48, align 1
  br label %6

6:                                                ; preds = %.lr.ph, %27
  %7 = phi i8 [ %3, %.lr.ph ], [ %30, %27 ]
  %.034 = phi i64 [ 0, %.lr.ph ], [ %.1, %27 ]
  %.02733 = phi i64 [ 0, %.lr.ph ], [ %28, %27 ]
  %.02832 = phi i32 [ 0, %.lr.ph ], [ %.129, %27 ]
  %8 = add i32 %.02832, 1
  switch i8 %7, label %24 [
    i8 62, label %9
    i8 60, label %12
    i8 38, label %15
    i8 39, label %18
    i8 34, label %21
    i8 10, label %27
  ]

9:                                                ; preds = %6
  %10 = getelementptr inbounds i8, ptr %1, i64 %.034
  store i32 %5, ptr %10, align 1
  %11 = add i64 %.034, 4
  br label %27

12:                                               ; preds = %6
  %13 = getelementptr inbounds i8, ptr %1, i64 %.034
  store i32 %4, ptr %13, align 1
  %14 = add i64 %.034, 4
  br label %27

15:                                               ; preds = %6
  %16 = getelementptr inbounds i8, ptr %1, i64 %.034
  tail call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 1 dereferenceable(5) %16, ptr noundef nonnull align 1 dereferenceable(5) @.str.50, i64 5, i1 false)
  %17 = add i64 %.034, 5
  br label %27

18:                                               ; preds = %6
  %19 = getelementptr inbounds i8, ptr %1, i64 %.034
  tail call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 1 dereferenceable(6) %19, ptr noundef nonnull align 1 dereferenceable(6) @.str.51, i64 6, i1 false)
  %20 = add i64 %.034, 6
  br label %27

21:                                               ; preds = %6
  %22 = getelementptr inbounds i8, ptr %1, i64 %.034
  tail call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 1 dereferenceable(6) %22, ptr noundef nonnull align 1 dereferenceable(6) @.str.52, i64 6, i1 false)
  %23 = add i64 %.034, 6
  br label %27

24:                                               ; preds = %6
  %25 = getelementptr inbounds i8, ptr %1, i64 %.034
  store i8 %7, ptr %25, align 1
  %26 = add i64 %.034, 1
  br label %27

27:                                               ; preds = %6, %9, %12, %15, %18, %21, %24
  %.129 = phi i32 [ %.02832, %24 ], [ %8, %6 ], [ %8, %21 ], [ %8, %18 ], [ %8, %15 ], [ %8, %12 ], [ %8, %9 ]
  %.1 = phi i64 [ %26, %24 ], [ %.034, %6 ], [ %23, %21 ], [ %20, %18 ], [ %17, %15 ], [ %14, %12 ], [ %11, %9 ]
  %28 = add i64 %.02733, 1
  %29 = getelementptr inbounds i8, ptr %0, i64 %28
  %30 = load i8, ptr %29, align 1
  %.not = icmp eq i8 %30, 0
  br i1 %.not, label %._crit_edge, label %6, !llvm.loop !5

._crit_edge:                                      ; preds = %27, %2
  %.028.lcssa = phi i32 [ 0, %2 ], [ %.129, %27 ]
  ret i32 %.028.lcssa
}

; 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) #1

attributes #0 = { nofree norecurse nosync nounwind memory(argmem: readwrite) 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 nounwind willreturn memory(argmem: readwrite) }

!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: EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass