; LLVM IR from mkazhdan/DMG :: Util/CmdLineParser.ll (ZNK11cmdLineInts5writeEP8_IO_FILE)

; 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.cmdLineReadable = type { ptr, i8, ptr }
%class.cmdLineInts = type { %class.cmdLineReadable, i32, ptr }

@.str.8 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.14 = external hidden unnamed_addr constant [4 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
declare i32 @fprintf(ptr noundef, ptr noundef, ...) #1

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZNK11cmdLineInts5writeEP8_IO_FILE(ptr noundef nonnull align 8 dereferenceable(40) %0, ptr noundef %1) unnamed_addr #2 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  %6 = load ptr, ptr %3, align 8
  %7 = load ptr, ptr %4, align 8, !tbaa !5
  %8 = getelementptr inbounds %class.cmdLineReadable, ptr %6, i32 0, i32 2
  %9 = load ptr, ptr %8, align 8, !tbaa !9
  %10 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %7, ptr noundef @.str.8, ptr noundef %9) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  store i32 0, ptr %5, align 4, !tbaa !12
  br label %11

11:                                               ; preds = %26, %2
  %12 = load i32, ptr %5, align 4, !tbaa !12
  %13 = getelementptr inbounds %class.cmdLineInts, ptr %6, i32 0, i32 1
  %14 = load i32, ptr %13, align 8, !tbaa !14
  %15 = icmp slt i32 %12, %14
  br i1 %15, label %17, label %16

16:                                               ; preds = %11
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  br label %29

17:                                               ; preds = %11
  %18 = load ptr, ptr %4, align 8, !tbaa !5
  %19 = getelementptr inbounds %class.cmdLineInts, ptr %6, i32 0, i32 2
  %20 = load ptr, ptr %19, align 8, !tbaa !16
  %21 = load i32, ptr %5, align 4, !tbaa !12
  %22 = sext i32 %21 to i64
  %23 = getelementptr inbounds i32, ptr %20, i64 %22
  %24 = load i32, ptr %23, align 4, !tbaa !12
  %25 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %18, ptr noundef @.str.14, i32 noundef %24) #3
  br label %26

26:                                               ; preds = %17
  %27 = load i32, ptr %5, align 4, !tbaa !12
  %28 = add nsw i32 %27, 1
  store i32 %28, ptr %5, align 4, !tbaa !12
  br label %11, !llvm.loop !17

29:                                               ; preds = %16
  ret void
}

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, !6, i64 16}
!10 = !{!"_ZTS15cmdLineReadable", !11, i64 8, !6, i64 16}
!11 = !{!"bool", !7, i64 0}
!12 = !{!13, !13, i64 0}
!13 = !{!"int", !7, i64 0}
!14 = !{!15, !13, i64 24}
!15 = !{!"_ZTS11cmdLineInts", !10, i64 0, !13, i64 24, !6, i64 32}
!16 = !{!15, !6, i64 32}
!17 = distinct !{!17, !18}
!18 = !{!"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.8 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.14 = external hidden unnamed_addr constant [4 x i8], align 1

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

; Function Attrs: mustprogress nofree nounwind uwtable
define dso_local void @_ZNK11cmdLineInts5writeEP8_IO_FILE(ptr nocapture noundef nonnull readonly align 8 dereferenceable(40) %0, ptr nocapture noundef %1) unnamed_addr #1 align 2 {
  %3 = getelementptr inbounds i8, ptr %0, i64 16
  %4 = load ptr, ptr %3, align 8, !tbaa !5
  %5 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %1, ptr noundef nonnull @.str.8, ptr noundef %4) #2
  %6 = getelementptr inbounds i8, ptr %0, i64 24
  %7 = load i32, ptr %6, align 8, !tbaa !11
  %8 = icmp sgt i32 %7, 0
  br i1 %8, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %2
  %9 = getelementptr inbounds i8, ptr %0, i64 32
  br label %10

._crit_edge:                                      ; preds = %10, %2
  ret void

10:                                               ; preds = %.lr.ph, %10
  %indvars.iv = phi i64 [ 0, %.lr.ph ], [ %indvars.iv.next, %10 ]
  %11 = load ptr, ptr %9, align 8, !tbaa !14
  %12 = getelementptr inbounds i32, ptr %11, i64 %indvars.iv
  %13 = load i32, ptr %12, align 4, !tbaa !15
  %14 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %1, ptr noundef nonnull @.str.14, i32 noundef %13) #2
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %15 = load i32, ptr %6, align 8, !tbaa !11
  %16 = sext i32 %15 to i64
  %17 = icmp slt i64 %indvars.iv.next, %16
  br i1 %17, label %10, label %._crit_edge, !llvm.loop !16
}

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, !10, i64 16}
!6 = !{!"_ZTS15cmdLineReadable", !7, i64 8, !10, i64 16}
!7 = !{!"bool", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!12, !13, i64 24}
!12 = !{!"_ZTS11cmdLineInts", !6, i64 0, !13, i64 24, !10, i64 32}
!13 = !{!"int", !8, i64 0}
!14 = !{!12, !10, i64 32}
!15 = !{!13, !13, i64 0}
!16 = distinct !{!16, !17}
!17 = !{!"llvm.loop.mustprogress"}


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