; LLVM IR from tangjz/acm-icpc :: codeforces/gym/100624C.ll (Z4initv)

; 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"

@a = external dso_local global [256 x [256 x i8]], align 16
@_ZL3cla = external hidden constant [120 x [10 x i8]], align 16

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z4initv() #0 {
  %1 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %1) #2
  store i32 0, ptr %1, align 4, !tbaa !5
  br label %2

2:                                                ; preds = %23, %0
  %3 = load i32, ptr %1, align 4, !tbaa !5
  %4 = icmp slt i32 %3, 120
  br i1 %4, label %6, label %5

5:                                                ; preds = %2
  call void @llvm.lifetime.end.p0(i64 4, ptr %1) #2
  br label %26

6:                                                ; preds = %2
  %7 = load i32, ptr %1, align 4, !tbaa !5
  %8 = sext i32 %7 to i64
  %9 = getelementptr inbounds [120 x [10 x i8]], ptr @_ZL3cla, i64 0, i64 %8
  %10 = getelementptr inbounds [10 x i8], ptr %9, i64 0, i64 0
  %11 = load i8, ptr %10, align 2, !tbaa !9
  %12 = sext i8 %11 to i32
  %13 = sext i32 %12 to i64
  %14 = getelementptr inbounds [256 x [256 x i8]], ptr @a, i64 0, i64 %13
  %15 = load i32, ptr %1, align 4, !tbaa !5
  %16 = sext i32 %15 to i64
  %17 = getelementptr inbounds [120 x [10 x i8]], ptr @_ZL3cla, i64 0, i64 %16
  %18 = getelementptr inbounds [10 x i8], ptr %17, i64 0, i64 1
  %19 = load i8, ptr %18, align 1, !tbaa !9
  %20 = sext i8 %19 to i32
  %21 = sext i32 %20 to i64
  %22 = getelementptr inbounds [256 x i8], ptr %14, i64 0, i64 %21
  store i8 1, ptr %22, align 1, !tbaa !10
  br label %23

23:                                               ; preds = %6
  %24 = load i32, ptr %1, align 4, !tbaa !5
  %25 = add nsw i32 %24, 1
  store i32 %25, ptr %1, align 4, !tbaa !5
  br label %2, !llvm.loop !12

26:                                               ; preds = %5
  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 = !{!7, !7, i64 0}
!10 = !{!11, !11, i64 0}
!11 = !{!"bool", !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"

@a = external dso_local local_unnamed_addr global [256 x [256 x i8]], align 16
@_ZL3cla = external hidden local_unnamed_addr constant [120 x [10 x i8]], align 16

; Function Attrs: mustprogress nofree norecurse nosync nounwind memory(write, argmem: none, inaccessiblemem: none) uwtable
define dso_local void @_Z4initv() local_unnamed_addr #0 {
  br label %2

1:                                                ; preds = %2
  ret void

2:                                                ; preds = %2, %0
  %indvars.iv = phi i64 [ 0, %0 ], [ %indvars.iv.next.2, %2 ]
  %3 = getelementptr inbounds [120 x [10 x i8]], ptr @_ZL3cla, i64 0, i64 %indvars.iv
  %4 = load i8, ptr %3, align 2, !tbaa !5
  %5 = sext i8 %4 to i64
  %6 = getelementptr inbounds i8, ptr %3, i64 1
  %7 = load i8, ptr %6, align 1, !tbaa !5
  %8 = sext i8 %7 to i64
  %9 = getelementptr inbounds [256 x [256 x i8]], ptr @a, i64 0, i64 %5, i64 %8
  store i8 1, ptr %9, align 1, !tbaa !8
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %10 = getelementptr inbounds [120 x [10 x i8]], ptr @_ZL3cla, i64 0, i64 %indvars.iv.next
  %11 = load i8, ptr %10, align 2, !tbaa !5
  %12 = sext i8 %11 to i64
  %13 = getelementptr inbounds i8, ptr %10, i64 1
  %14 = load i8, ptr %13, align 1, !tbaa !5
  %15 = sext i8 %14 to i64
  %16 = getelementptr inbounds [256 x [256 x i8]], ptr @a, i64 0, i64 %12, i64 %15
  store i8 1, ptr %16, align 1, !tbaa !8
  %indvars.iv.next.1 = add nuw nsw i64 %indvars.iv, 2
  %17 = getelementptr inbounds [120 x [10 x i8]], ptr @_ZL3cla, i64 0, i64 %indvars.iv.next.1
  %18 = load i8, ptr %17, align 2, !tbaa !5
  %19 = sext i8 %18 to i64
  %20 = getelementptr inbounds i8, ptr %17, i64 1
  %21 = load i8, ptr %20, align 1, !tbaa !5
  %22 = sext i8 %21 to i64
  %23 = getelementptr inbounds [256 x [256 x i8]], ptr @a, i64 0, i64 %19, i64 %22
  store i8 1, ptr %23, align 1, !tbaa !8
  %indvars.iv.next.2 = add nuw nsw i64 %indvars.iv, 3
  %exitcond.not.2 = icmp eq i64 %indvars.iv.next.2, 120
  br i1 %exitcond.not.2, label %1, label %2, !llvm.loop !10
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind memory(write, argmem: none, inaccessiblemem: none) 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 = !{!6, !6, i64 0}
!6 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = !{!9, !9, i64 0}
!9 = !{!"bool", !6, i64 0}
!10 = distinct !{!10, !11}
!11 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LoopRotatePass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass