Subzero: Implemented codegen for poisoning and unpoisoning stack redzones

src/IceCfg.cpp

Index: src/IceCfg.cpp
diff --git a/src/IceCfg.cpp b/src/IceCfg.cpp
index 23c363fa7791938a5a05a0edfc6adaf72167f48b..275bb091e5d45f42b4de4f9a07f3d6d9ae70a8e1 100644
--- a/src/IceCfg.cpp
+++ b/src/IceCfg.cpp
@@ -803,7 +803,7 @@ void Cfg::sortAndCombineAllocas(CfgVector<InstAlloca *> &Allocas,
     uint32_t Align1 = A1->getAlignInBytes();
     uint32_t Align2 = A2->getAlignInBytes();
     if (Align1 == Align2)
-      return A1->getNumber() > A2->getNumber();
+      return A1->getNumber() < A2->getNumber();
     else
       return Align1 > Align2;
   });