update the blurbs for EraseUseRecordsOfOperandIds()

KhronosGroup · Aug 17, 2016 · daa199b · daa199b
1 parent a15622a
commit daa199b
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/source/opt/def_use_manager.h b/source/opt/def_use_manager.h
@@ -108,7 +108,11 @@ class DefUseManager {
   // be removed. Does nothing if |inst| was not analyzed before.
   void ClearInst(ir::Instruction* inst);
 
-  // Erases the records that a given instruction |inst| uses its operand ids.
+  // Erases the records that a given instruction uses its operand ids.
+  // This method updates the id_to_uses_ map with the operand ids of the
+  // given instruction and remove the use records of the given instruction from
+  // the records of its operand ids. It also erase the mapping from the given
+  // instruction to its used operand ids in the inst_to_used_ids_ map.
   void EraseUseRecordsOfOperandIds(const ir::Instruction* inst);
 
   IdToDefMap id_to_def_;    // Mapping from ids to their definitions