8303278: Imprecise bottom type of ExtractB/UB

Reviewed-by: qamai, thartmann
openjdk · Apr 4, 2023 · ac898e9 · ac898e9 · openjdk-notifier · Apr 4, 2023
1 parent a1a9ec6
commit ac898e9
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/hotspot/share/opto/vectornode.hpp b/src/hotspot/share/opto/vectornode.hpp
@@ -1288,7 +1288,7 @@ class ExtractBNode : public ExtractNode {
  public:
   ExtractBNode(Node* src, ConINode* pos) : ExtractNode(src, pos) {}
   virtual int Opcode() const;
-  virtual const Type *bottom_type() const { return TypeInt::INT; }
+  virtual const Type* bottom_type() const { return TypeInt::BYTE; }
   virtual uint ideal_reg() const { return Op_RegI; }
 };
 
@@ -1298,7 +1298,7 @@ class ExtractUBNode : public ExtractNode {
  public:
   ExtractUBNode(Node* src, ConINode* pos) : ExtractNode(src, pos) {}
   virtual int Opcode() const;
-  virtual const Type *bottom_type() const { return TypeInt::INT; }
+  virtual const Type* bottom_type() const { return TypeInt::UBYTE; }
   virtual uint ideal_reg() const { return Op_RegI; }
 };