; LLVM IR from NVIDIA/tensorflow :: tensorflow/stream_executor/lib/numbers.ll (ZN15stream_executor4port12safe_strto32EPKcPi)

; 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: mustprogress nounwind uwtable
define dso_local noundef zeroext i1 @_ZN15stream_executor4port12safe_strto32EPKcPi(ptr noundef %0, ptr noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, 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 8, ptr %5) #4
  %6 = load ptr, ptr %3, align 8, !tbaa !5
  %7 = call i64 @strtol(ptr noundef %6, ptr noundef %5, i32 noundef 10) #4
  %8 = trunc i64 %7 to i32
  %9 = load ptr, ptr %4, align 8, !tbaa !5
  store i32 %8, ptr %9, align 4, !tbaa !9
  %10 = load ptr, ptr %5, align 8, !tbaa !5
  %11 = load ptr, ptr %3, align 8, !tbaa !5
  %12 = icmp ne ptr %10, %11
  br i1 %12, label %13, label %24

13:                                               ; preds = %2
  br label %14

14:                                               ; preds = %20, %13
  %15 = load ptr, ptr %5, align 8, !tbaa !5
  %16 = load i8, ptr %15, align 1, !tbaa !11
  %17 = sext i8 %16 to i32
  %18 = call i32 @isspace(i32 noundef %17) #5
  %19 = icmp ne i32 %18, 0
  br i1 %19, label %20, label %23

20:                                               ; preds = %14
  %21 = load ptr, ptr %5, align 8, !tbaa !5
  %22 = getelementptr inbounds i8, ptr %21, i32 1
  store ptr %22, ptr %5, align 8, !tbaa !5
  br label %14, !llvm.loop !12

23:                                               ; preds = %14
  br label %24

24:                                               ; preds = %23, %2
  %25 = load ptr, ptr %3, align 8, !tbaa !5
  %26 = load i8, ptr %25, align 1, !tbaa !11
  %27 = sext i8 %26 to i32
  %28 = icmp ne i32 %27, 0
  br i1 %28, label %29, label %34

29:                                               ; preds = %24
  %30 = load ptr, ptr %5, align 8, !tbaa !5
  %31 = load i8, ptr %30, align 1, !tbaa !11
  %32 = sext i8 %31 to i32
  %33 = icmp eq i32 %32, 0
  br label %34

34:                                               ; preds = %29, %24
  %35 = phi i1 [ false, %24 ], [ %33, %29 ]
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #4
  ret i1 %35
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind
declare i64 @strtol(ptr noundef, ptr noundef, i32 noundef) #2

; Function Attrs: nounwind willreturn memory(read)
declare i32 @isspace(i32 noundef) #3

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #3 = { nounwind willreturn memory(read) "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 }
attributes #5 = { 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 = !{!7, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"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"

; Function Attrs: mustprogress nofree nounwind uwtable
define dso_local noundef zeroext i1 @_ZN15stream_executor4port12safe_strto32EPKcPi(ptr noundef %0, ptr nocapture noundef writeonly %1) local_unnamed_addr #0 {
  %3 = alloca ptr, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #4
  %4 = call i64 @strtol(ptr noundef %0, ptr noundef nonnull %3, i32 noundef 10) #4
  %5 = trunc i64 %4 to i32
  store i32 %5, ptr %1, align 4, !tbaa !5
  %6 = load ptr, ptr %3, align 8, !tbaa !9
  %.not = icmp eq ptr %6, %0
  br i1 %.not, label %12, label %.preheader

.preheader:                                       ; preds = %2, %.preheader
  %7 = phi ptr [ %11, %.preheader ], [ %6, %2 ]
  %8 = load i8, ptr %7, align 1, !tbaa !11
  %9 = sext i8 %8 to i32
  %10 = tail call i32 @isspace(i32 noundef %9) #5
  %.not4 = icmp eq i32 %10, 0
  %11 = getelementptr inbounds i8, ptr %7, i64 1
  br i1 %.not4, label %.loopexit, label %.preheader, !llvm.loop !12

.loopexit:                                        ; preds = %.preheader
  store ptr %7, ptr %3, align 8, !tbaa !9
  br label %12

12:                                               ; preds = %.loopexit, %2
  %13 = phi ptr [ %7, %.loopexit ], [ %6, %2 ]
  %14 = load i8, ptr %0, align 1, !tbaa !11
  %.not5 = icmp eq i8 %14, 0
  br i1 %.not5, label %18, label %15

15:                                               ; preds = %12
  %16 = load i8, ptr %13, align 1, !tbaa !11
  %17 = icmp eq i8 %16, 0
  br label %18

18:                                               ; preds = %15, %12
  %19 = phi i1 [ false, %12 ], [ %17, %15 ]
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #4
  ret i1 %19
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nofree nounwind willreturn
declare i64 @strtol(ptr noundef readonly, ptr nocapture noundef, i32 noundef) local_unnamed_addr #2

; Function Attrs: mustprogress nofree nounwind willreturn memory(read)
declare i32 @isspace(i32 noundef) local_unnamed_addr #3

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

attributes #0 = { 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 #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { mustprogress nofree nounwind willreturn "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 = { mustprogress nofree nounwind willreturn memory(read) "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 }
attributes #5 = { 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!7, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass