; LLVM IR from kazunetakahashi/atcoder :: 201411_201509/0306_ABC018/C.ll (Z7ud_fillii)

; 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"

@ud = external dso_local global [600 x [600 x i32]], align 16

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_Z5validii(i32 noundef, i32 noundef) #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z7ud_fillii(i32 noundef %0, i32 noundef %1) #0 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store i32 %0, ptr %3, align 4, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  store i32 0, ptr %5, align 4, !tbaa !5
  br label %6

6:                                                ; preds = %20, %2
  %7 = load i32, ptr %3, align 4, !tbaa !5
  %8 = load i32, ptr %5, align 4, !tbaa !5
  %9 = add nsw i32 %7, %8
  %10 = load i32, ptr %4, align 4, !tbaa !5
  %11 = call noundef zeroext i1 @_Z5validii(i32 noundef %9, i32 noundef %10)
  br i1 %11, label %12, label %18

12:                                               ; preds = %6
  %13 = load i32, ptr %3, align 4, !tbaa !5
  %14 = load i32, ptr %5, align 4, !tbaa !5
  %15 = sub nsw i32 %13, %14
  %16 = load i32, ptr %4, align 4, !tbaa !5
  %17 = call noundef zeroext i1 @_Z5validii(i32 noundef %15, i32 noundef %16)
  br label %18

18:                                               ; preds = %12, %6
  %19 = phi i1 [ false, %6 ], [ %17, %12 ]
  br i1 %19, label %20, label %23

20:                                               ; preds = %18
  %21 = load i32, ptr %5, align 4, !tbaa !5
  %22 = add nsw i32 %21, 1
  store i32 %22, ptr %5, align 4, !tbaa !5
  br label %6, !llvm.loop !9

23:                                               ; preds = %18
  %24 = load i32, ptr %5, align 4, !tbaa !5
  %25 = load i32, ptr %3, align 4, !tbaa !5
  %26 = sext i32 %25 to i64
  %27 = getelementptr inbounds [600 x [600 x i32]], ptr @ud, i64 0, i64 %26
  %28 = load i32, ptr %4, align 4, !tbaa !5
  %29 = sext i32 %28 to i64
  %30 = getelementptr inbounds [600 x i32], ptr %27, i64 0, i64 %29
  store i32 %24, ptr %30, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  ret void
}

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

; 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 }

!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 = distinct !{!9, !10}
!10 = !{!"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"

@ud = external dso_local local_unnamed_addr global [600 x [600 x i32]], align 16

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_Z5validii(i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z7ud_fillii(i32 noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = tail call noundef zeroext i1 @_Z5validii(i32 noundef %0, i32 noundef %1)
  br i1 %3, label %.lr.ph, label %.critedge

.lr.ph:                                           ; preds = %2, %6
  %.010 = phi i32 [ %7, %6 ], [ 0, %2 ]
  %4 = sub nsw i32 %0, %.010
  %5 = tail call noundef zeroext i1 @_Z5validii(i32 noundef %4, i32 noundef %1)
  br i1 %5, label %6, label %.critedge

6:                                                ; preds = %.lr.ph
  %7 = add nuw nsw i32 %.010, 1
  %8 = add nsw i32 %7, %0
  %9 = tail call noundef zeroext i1 @_Z5validii(i32 noundef %8, i32 noundef %1)
  br i1 %9, label %.lr.ph, label %.critedge, !llvm.loop !5

.critedge:                                        ; preds = %.lr.ph, %6, %2
  %.0.lcssa = phi i32 [ 0, %2 ], [ %7, %6 ], [ %.010, %.lr.ph ]
  %10 = sext i32 %0 to i64
  %11 = sext i32 %1 to i64
  %12 = getelementptr inbounds [600 x [600 x i32]], ptr @ud, i64 0, i64 %10, i64 %11
  store i32 %.0.lcssa, ptr %12, align 4, !tbaa !7
  ret void
}

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" }

!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"}
!7 = !{!8, !8, i64 0}
!8 = !{!"int", !9, i64 0}
!9 = !{!"omnipotent char", !10, i64 0}
!10 = !{!"Simple C++ TBAA"}


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