; LLVM IR from google/esh :: shell/lib/utils (utils)

; 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.1 = external hidden unnamed_addr constant [12 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [55 x i8], align 1

declare i32 @printf(ptr noundef, ...) #0

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

declare i32 @atoh(ptr noundef) #0

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

; Function Attrs: nounwind uwtable
define dso_local i32 @read_mem(i32 noundef %0, ptr noundef %1) #2 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !9
  %10 = load i32, ptr %4, align 4, !tbaa !5
  %11 = icmp slt i32 %10, 3
  br i1 %11, label %12, label %17

12:                                               ; preds = %2
  %13 = load ptr, ptr %5, align 8, !tbaa !9
  %14 = getelementptr inbounds ptr, ptr %13, i64 0
  %15 = load ptr, ptr %14, align 8, !tbaa !9
  %16 = call i32 (ptr, ...) @printf(ptr noundef @.str.3, ptr noundef %15)
  store i32 -1, ptr %3, align 4
  br label %45

17:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  %18 = load ptr, ptr %5, align 8, !tbaa !9
  %19 = getelementptr inbounds ptr, ptr %18, i64 1
  %20 = load ptr, ptr %19, align 8, !tbaa !9
  %21 = call i32 @atoh(ptr noundef %20)
  store i32 %21, ptr %6, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  %22 = load ptr, ptr %5, align 8, !tbaa !9
  %23 = getelementptr inbounds ptr, ptr %22, i64 2
  %24 = load ptr, ptr %23, align 8, !tbaa !9
  %25 = call i32 @atoi(ptr noundef %24)
  store i32 %25, ptr %7, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #3
  store i32 0, ptr %8, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #3
  store i32 0, ptr %9, align 4, !tbaa !5
  br label %26

26:                                               ; preds = %41, %17
  %27 = load i32, ptr %8, align 4, !tbaa !5
  %28 = load i32, ptr %7, align 4, !tbaa !5
  %29 = icmp ult i32 %27, %28
  br i1 %29, label %31, label %30

30:                                               ; preds = %26
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #3
  br label %44

31:                                               ; preds = %26
  %32 = load i32, ptr %6, align 4, !tbaa !5
  %33 = zext i32 %32 to i64
  %34 = inttoptr i64 %33 to ptr
  %35 = load volatile i32, ptr %34, align 4, !tbaa !5
  store i32 %35, ptr %9, align 4, !tbaa !5
  %36 = load i32, ptr %6, align 4, !tbaa !5
  %37 = load i32, ptr %9, align 4, !tbaa !5
  %38 = call i32 (ptr, ...) @printf(ptr noundef @.str.1, i32 noundef %36, i32 noundef %37)
  %39 = load i32, ptr %6, align 4, !tbaa !5
  %40 = add i32 %39, 4
  store i32 %40, ptr %6, align 4, !tbaa !5
  br label %41

41:                                               ; preds = %31
  %42 = load i32, ptr %8, align 4, !tbaa !5
  %43 = add i32 %42, 1
  store i32 %43, ptr %8, align 4, !tbaa !5
  br label %26, !llvm.loop !11

44:                                               ; preds = %30
  store i32 0, ptr %3, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  br label %45

45:                                               ; preds = %44, %12
  %46 = load i32, ptr %3, align 4
  ret i32 %46
}

declare i32 @atoi(ptr noundef) #0

attributes #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 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !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"

@.str.1 = external hidden unnamed_addr constant [12 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [55 x i8], align 1

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

declare i32 @atoh(ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local range(i32 -1, 1) i32 @read_mem(i32 noundef %0, ptr nocapture noundef readonly %1) local_unnamed_addr #2 {
  %3 = icmp slt i32 %0, 3
  br i1 %3, label %4, label %7

4:                                                ; preds = %2
  %5 = load ptr, ptr %1, align 8, !tbaa !5
  %6 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3, ptr noundef %5)
  br label %.loopexit

7:                                                ; preds = %2
  %8 = getelementptr inbounds i8, ptr %1, i64 8
  %9 = load ptr, ptr %8, align 8, !tbaa !5
  %10 = tail call i32 @atoh(ptr noundef %9) #4
  %11 = getelementptr inbounds i8, ptr %1, i64 16
  %12 = load ptr, ptr %11, align 8, !tbaa !5
  %13 = tail call i32 @atoi(ptr nocapture noundef %12)
  %.not = icmp eq i32 %13, 0
  br i1 %.not, label %.loopexit, label %.lr.ph

.lr.ph:                                           ; preds = %7, %.lr.ph
  %.014 = phi i32 [ %19, %.lr.ph ], [ 0, %7 ]
  %.01213 = phi i32 [ %18, %.lr.ph ], [ %10, %7 ]
  %14 = zext i32 %.01213 to i64
  %15 = inttoptr i64 %14 to ptr
  %16 = load volatile i32, ptr %15, align 4, !tbaa !9
  %17 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i32 noundef %.01213, i32 noundef %16)
  %18 = add i32 %.01213, 4
  %19 = add nuw i32 %.014, 1
  %exitcond.not = icmp eq i32 %19, %13
  br i1 %exitcond.not, label %.loopexit, label %.lr.ph, !llvm.loop !11

.loopexit:                                        ; preds = %.lr.ph, %7, %4
  %.011 = phi i32 [ -1, %4 ], [ 0, %7 ], [ 0, %.lr.ph ]
  ret i32 %.011
}

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

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 = { "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 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 = { 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 }

!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 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


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