From 56000bb68a32e4e8bcac5119b1e07a3545b13ccc Mon Sep 17 00:00:00 2001
From: Qiang Zhang <johnson9009@163.com>
Date: Wed, 17 Feb 2021 22:22:32 +0800
Subject: [PATCH] [Backport-0.7][Quantize] Fix Bug Which Cause Negative Left
 Shift Op (#7433)

---
 src/relay/quantize/realize.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/relay/quantize/realize.cc b/src/relay/quantize/realize.cc
index ace2c2473173..d2651117d6d6 100644
--- a/src/relay/quantize/realize.cc
+++ b/src/relay/quantize/realize.cc
@@ -165,7 +165,7 @@ Expr QuantizeRealize(const Call& ref_call, const Array<Expr>& new_args, const Ob
                           MakeConstantScalar(cfg->dtype_activation, static_cast<int>(shift_nbit)));
       } else {
         data = LeftShift(data,
-                         MakeConstantScalar(cfg->dtype_activation, static_cast<int>(shift_nbit)));
+                         MakeConstantScalar(cfg->dtype_activation, static_cast<int>(-shift_nbit)));
       }
       data = Clip(data, clip_min_imm, clip_max_imm);
       return QRealizeIntExpr(data, dom_scale, n->dtype);