Merge pull request #192 from hzongaro/avoid-commoning-l2a-0.42

[0.42.0] Prevent commoning of l2a operations in localCSE
eclipse-openj9 · Jan 8, 2024 · 11700e6 · 11700e6
2 parents 494d6eb + a52b6de
commit 11700e6
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/compiler/optimizer/OMRLocalCSE.cpp b/compiler/optimizer/OMRLocalCSE.cpp
@@ -1186,6 +1186,9 @@ bool OMR::LocalCSE::canBeAvailable(TR::Node *parent, TR::Node *node, TR_BitVecto
    if (node->getOpCodeValue() == TR::allocationFence)
       return false;
 
+   if (node->getOpCodeValue() == TR::l2a)
+      return false;
+
    if (node->getOpCode().isLoadReg() || node->getOpCode().isStoreReg() || (node->getOpCodeValue() == TR::PassThrough && parent->getOpCodeValue() != TR::GlRegDeps) || (node->getOpCodeValue() == TR::GlRegDeps))
       return false;