; LLVM IR from kazunetakahashi/atcoder :: 2017/0122_AGC009/C.ll (Z7calc_SXi)

; 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"

@SX = external dso_local global [100010 x i64], align 16

; Function Attrs: mustprogress uwtable
declare dso_local noundef i64 @_Z6calc_Xi(i32 noundef) #0

; Function Attrs: mustprogress uwtable
define dso_local noundef i64 @_Z7calc_SXi(i32 noundef %0) #0 {
  %2 = alloca i64, align 8
  %3 = alloca i32, align 4
  store i32 %0, ptr %3, align 4, !tbaa !5
  %4 = load i32, ptr %3, align 4, !tbaa !5
  %5 = sext i32 %4 to i64
  %6 = getelementptr inbounds [100010 x i64], ptr @SX, i64 0, i64 %5
  %7 = load i64, ptr %6, align 8, !tbaa !9
  %8 = icmp sge i64 %7, 0
  br i1 %8, label %9, label %14

9:                                                ; preds = %1
  %10 = load i32, ptr %3, align 4, !tbaa !5
  %11 = sext i32 %10 to i64
  %12 = getelementptr inbounds [100010 x i64], ptr @SX, i64 0, i64 %11
  %13 = load i64, ptr %12, align 8, !tbaa !9
  store i64 %13, ptr %2, align 8
  br label %25

14:                                               ; preds = %1
  %15 = load i32, ptr %3, align 4, !tbaa !5
  %16 = sub nsw i32 %15, 1
  %17 = call noundef i64 @_Z7calc_SXi(i32 noundef %16)
  %18 = load i32, ptr %3, align 4, !tbaa !5
  %19 = call noundef i64 @_Z6calc_Xi(i32 noundef %18)
  %20 = add nsw i64 %17, %19
  %21 = srem i64 %20, 1000000007
  %22 = load i32, ptr %3, align 4, !tbaa !5
  %23 = sext i32 %22 to i64
  %24 = getelementptr inbounds [100010 x i64], ptr @SX, i64 0, i64 %23
  store i64 %21, ptr %24, align 8, !tbaa !9
  store i64 %21, ptr %2, align 8
  br label %25

25:                                               ; preds = %14, %9
  %26 = load i64, ptr %2, align 8
  ret i64 %26
}

attributes #0 = { mustprogress 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"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long long", !7, i64 0}


; 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"

@SX = external dso_local local_unnamed_addr global [100010 x i64], align 16

; Function Attrs: mustprogress uwtable
declare dso_local noundef i64 @_Z6calc_Xi(i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
define dso_local noundef range(i64 -1000000006, -9223372036854775808) i64 @_Z7calc_SXi(i32 noundef %0) local_unnamed_addr #0 {
  %2 = sext i32 %0 to i64
  %3 = getelementptr inbounds [100010 x i64], ptr @SX, i64 0, i64 %2
  %4 = load i64, ptr %3, align 8, !tbaa !5
  %5 = icmp sgt i64 %4, -1
  br i1 %5, label %common.ret7, label %6

common.ret7:                                      ; preds = %1, %6
  %common.ret7.op = phi i64 [ %11, %6 ], [ %4, %1 ]
  ret i64 %common.ret7.op

6:                                                ; preds = %1
  %7 = add nsw i32 %0, -1
  %8 = tail call noundef i64 @_Z7calc_SXi(i32 noundef %7)
  %9 = tail call noundef i64 @_Z6calc_Xi(i32 noundef %0)
  %10 = add nsw i64 %9, %8
  %11 = srem i64 %10, 1000000007
  store i64 %11, ptr %3, align 8, !tbaa !5
  br label %common.ret7
}

attributes #0 = { mustprogress 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 = !{!"long long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InstCombinePass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass