; LLVM IR from tangjz/acm-icpc :: TDL_training/2016-03-27/M -  Merging - tjz.ll (Z1fii)

; 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 [100001 x [8 x i32]], align 16

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i64 @_Z1fii(i32 noundef %0, i32 noundef %1) #0 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i64, align 8
  %6 = 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 8, ptr %5) #2
  store i64 0, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  store i32 0, ptr %6, align 4, !tbaa !5
  br label %7

7:                                                ; preds = %25, %2
  %8 = load i32, ptr %6, align 4, !tbaa !5
  %9 = icmp slt i32 %8, 8
  br i1 %9, label %11, label %10

10:                                               ; preds = %7
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  br label %28

11:                                               ; preds = %7
  %12 = load i64, ptr %5, align 8, !tbaa !9
  %13 = load i32, ptr %4, align 4, !tbaa !5
  %14 = sext i32 %13 to i64
  %15 = mul nsw i64 %12, %14
  %16 = load i32, ptr %3, align 4, !tbaa !5
  %17 = sext i32 %16 to i64
  %18 = getelementptr inbounds [100001 x [8 x i32]], ptr @a, i64 0, i64 %17
  %19 = load i32, ptr %6, align 4, !tbaa !5
  %20 = sext i32 %19 to i64
  %21 = getelementptr inbounds [8 x i32], ptr %18, i64 0, i64 %20
  %22 = load i32, ptr %21, align 4, !tbaa !5
  %23 = sext i32 %22 to i64
  %24 = add nsw i64 %15, %23
  store i64 %24, ptr %5, align 8, !tbaa !9
  br label %25

25:                                               ; preds = %11
  %26 = load i32, ptr %6, align 4, !tbaa !5
  %27 = add nsw i32 %26, 1
  store i32 %27, ptr %6, align 4, !tbaa !5
  br label %7, !llvm.loop !11

28:                                               ; preds = %10
  %29 = load i64, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #2
  ret i64 %29
}

; 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 = !{!10, !10, i64 0}
!10 = !{!"long long", !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"

@a = external dso_local local_unnamed_addr global [100001 x [8 x i32]], align 16

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(read, argmem: none, inaccessiblemem: none) uwtable
define dso_local noundef i64 @_Z1fii(i32 noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = sext i32 %1 to i64
  %4 = sext i32 %0 to i64
  %5 = getelementptr inbounds [100001 x [8 x i32]], ptr @a, i64 0, i64 %4, i64 0
  %6 = load i32, ptr %5, align 16, !tbaa !5
  %7 = sext i32 %6 to i64
  %8 = mul nsw i64 %7, %3
  %9 = getelementptr inbounds [100001 x [8 x i32]], ptr @a, i64 0, i64 %4, i64 1
  %10 = load i32, ptr %9, align 4, !tbaa !5
  %11 = sext i32 %10 to i64
  %12 = add nsw i64 %8, %11
  %13 = mul nsw i64 %12, %3
  %14 = getelementptr inbounds [100001 x [8 x i32]], ptr @a, i64 0, i64 %4, i64 2
  %15 = load i32, ptr %14, align 8, !tbaa !5
  %16 = sext i32 %15 to i64
  %17 = add nsw i64 %13, %16
  %18 = mul nsw i64 %17, %3
  %19 = getelementptr inbounds [100001 x [8 x i32]], ptr @a, i64 0, i64 %4, i64 3
  %20 = load i32, ptr %19, align 4, !tbaa !5
  %21 = sext i32 %20 to i64
  %22 = add nsw i64 %18, %21
  %23 = mul nsw i64 %22, %3
  %24 = getelementptr inbounds [100001 x [8 x i32]], ptr @a, i64 0, i64 %4, i64 4
  %25 = load i32, ptr %24, align 16, !tbaa !5
  %26 = sext i32 %25 to i64
  %27 = add nsw i64 %23, %26
  %28 = mul nsw i64 %27, %3
  %29 = getelementptr inbounds [100001 x [8 x i32]], ptr @a, i64 0, i64 %4, i64 5
  %30 = load i32, ptr %29, align 4, !tbaa !5
  %31 = sext i32 %30 to i64
  %32 = add nsw i64 %28, %31
  %33 = mul nsw i64 %32, %3
  %34 = getelementptr inbounds [100001 x [8 x i32]], ptr @a, i64 0, i64 %4, i64 6
  %35 = load i32, ptr %34, align 8, !tbaa !5
  %36 = sext i32 %35 to i64
  %37 = add nsw i64 %33, %36
  %38 = mul nsw i64 %37, %3
  %39 = getelementptr inbounds [100001 x [8 x i32]], ptr @a, i64 0, i64 %4, i64 7
  %40 = load i32, ptr %39, align 4, !tbaa !5
  %41 = sext i32 %40 to i64
  %42 = add nsw i64 %38, %41
  ret i64 %42
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(read, 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}


; Effective O3 passes: GVNPass,GlobalOptPass,IndVarSimplifyPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,LCSSAPass,LICMPass,LoopRotatePass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass