; LLVM IR from mkazhdan/DMG :: Util/CmdLineParser.ll (ZN10cmdLineInt4readEPPci)

; 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.cmdLineInt = type <{ %class.cmdLineReadable, i32, [4 x i8] }>
%class.cmdLineReadable = type { ptr, i8, ptr }

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i32 @_ZN10cmdLineInt4readEPPci(ptr noundef nonnull align 8 dereferenceable(28) %0, ptr noundef %1, i32 noundef %2) unnamed_addr #0 align 2 {
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store i32 %2, ptr %7, align 4, !tbaa !9
  %8 = load ptr, ptr %5, align 8
  %9 = load i32, ptr %7, align 4, !tbaa !9
  %10 = icmp sgt i32 %9, 0
  br i1 %10, label %11, label %18

11:                                               ; preds = %3
  %12 = load ptr, ptr %6, align 8, !tbaa !5
  %13 = getelementptr inbounds ptr, ptr %12, i64 0
  %14 = load ptr, ptr %13, align 8, !tbaa !5
  %15 = call i32 @atoi(ptr noundef %14) #2
  %16 = getelementptr inbounds %class.cmdLineInt, ptr %8, i32 0, i32 1
  store i32 %15, ptr %16, align 8, !tbaa !11
  %17 = getelementptr inbounds %class.cmdLineReadable, ptr %8, i32 0, i32 1
  store i8 1, ptr %17, align 8, !tbaa !15
  store i32 1, ptr %4, align 4
  br label %19

18:                                               ; preds = %3
  store i32 0, ptr %4, align 4
  br label %19

19:                                               ; preds = %18, %11
  %20 = load i32, ptr %4, align 4
  ret i32 %20
}

; Function Attrs: inlinehint mustprogress nounwind willreturn memory(read) uwtable
declare i32 @atoi(ptr noundef nonnull) #1

attributes #0 = { 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 #1 = { inlinehint mustprogress nounwind willreturn memory(read) 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 willreturn memory(read) }

!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}
!11 = !{!12, !10, i64 24}
!12 = !{!"_ZTS10cmdLineInt", !13, i64 0, !10, i64 24}
!13 = !{!"_ZTS15cmdLineReadable", !14, i64 8, !6, i64 16}
!14 = !{!"bool", !7, i64 0}
!15 = !{!13, !14, i64 8}


; 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 nofree nounwind willreturn memory(read, argmem: readwrite) uwtable
define dso_local noundef range(i32 0, 2) i32 @_ZN10cmdLineInt4readEPPci(ptr nocapture noundef nonnull writeonly align 8 dereferenceable(28) %0, ptr nocapture noundef readonly %1, i32 noundef %2) unnamed_addr #0 align 2 {
  %4 = icmp sgt i32 %2, 0
  br i1 %4, label %5, label %10

5:                                                ; preds = %3
  %6 = load ptr, ptr %1, align 8, !tbaa !5
  %7 = tail call i32 @atoi(ptr nocapture noundef %6) #2
  %8 = getelementptr inbounds i8, ptr %0, i64 24
  store i32 %7, ptr %8, align 8, !tbaa !9
  %9 = getelementptr inbounds i8, ptr %0, i64 8
  store i8 1, ptr %9, align 8, !tbaa !14
  br label %10

10:                                               ; preds = %3, %5
  %.0 = phi i32 [ 1, %5 ], [ 0, %3 ]
  ret i32 %.0
}

; Function Attrs: inlinehint mustprogress nofree nounwind willreturn memory(read) uwtable
declare i32 @atoi(ptr nocapture noundef nonnull) local_unnamed_addr #1

attributes #0 = { mustprogress nofree nounwind willreturn memory(read, 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 = { inlinehint mustprogress nofree nounwind willreturn memory(read) 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 willreturn memory(read) }

!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, !13, i64 24}
!10 = !{!"_ZTS10cmdLineInt", !11, i64 0, !13, i64 24}
!11 = !{!"_ZTS15cmdLineReadable", !12, i64 8, !6, i64 16}
!12 = !{!"bool", !7, i64 0}
!13 = !{!"int", !7, i64 0}
!14 = !{!11, !12, i64 8}


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