From 533515426674dd8f7d029fd5bb88870830038164 Mon Sep 17 00:00:00 2001
From: William Chen <william.chen@futurewei.com>
Date: Mon, 25 Jul 2022 12:08:40 -0700
Subject: [PATCH] fix signed div/mod with unsigned const.

---
 src/mapleall/maple_be/src/cg/aarch64/aarch64_cgfunc.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/mapleall/maple_be/src/cg/aarch64/aarch64_cgfunc.cpp b/src/mapleall/maple_be/src/cg/aarch64/aarch64_cgfunc.cpp
index 1363204d98..9d845cdf80 100644
--- a/src/mapleall/maple_be/src/cg/aarch64/aarch64_cgfunc.cpp
+++ b/src/mapleall/maple_be/src/cg/aarch64/aarch64_cgfunc.cpp
@@ -893,8 +893,10 @@ MemOperand &AArch64CGFunc::ConstraintOffsetToSafeRegion(uint32 bitLen, const Mem
     hashMemOpndTable.erase(memOpnd);
   }
   int32 offsetValue = static_cast<int32>(memOpnd.GetOffsetImmediate()->GetOffsetValue());
-  int32 multiplier = (offsetValue / k512BitSizeInt) + static_cast<int32>(offsetValue % k512BitSizeInt > k256BitSizeInt);
-  int32 addMount = multiplier * k512BitSizeInt;
+  int32 val256 = k256BitSizeInt; /* const val is unsigned */
+  int32 val512 = k512BitSizeInt;
+  int32 multiplier = (offsetValue / val512) + static_cast<int32>(offsetValue % val512 > val256);
+  int32 addMount = multiplier * val512;
   int32 newOffset = offsetValue - addMount;
   RegOperand *baseReg = memOpnd.GetBaseRegister();
   ImmOperand &immAddMount = CreateImmOperand(addMount, k64BitSize, true);
-- 
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