[polly] r262010 - BlockGenerators: Allow values to be removed from ScalarMap

[Tobias Grosser via llvm-commits]

Author: grosser
Date: Fri Feb 26 07:27:02 2016
New Revision: 262010

URL: http://llvm.org/viewvc/llvm-project?rev=262010&view=rev
Log:
BlockGenerators: Allow values to be removed from ScalarMap

This function is not yet used in Polly, but is useful to external projects that
generate multi-module code using Polly.

Modified:
    polly/trunk/include/polly/CodeGen/BlockGenerators.h

Modified: polly/trunk/include/polly/CodeGen/BlockGenerators.h
URL: http://llvm.org/viewvc/llvm-project/polly/trunk/include/polly/CodeGen/BlockGenerators.h?rev=262010&r1=262009&r2=262010&view=diff
==============================================================================
--- polly/trunk/include/polly/CodeGen/BlockGenerators.h (original)
+++ polly/trunk/include/polly/CodeGen/BlockGenerators.h Fri Feb 26 07:27:02 2016
@@ -111,6 +111,17 @@ public:
   ///          GlobalMap.
   Value *getOrCreateScalarAlloca(Value *ScalarBase);
 
+  /// @brief Remove a Value's allocation from the ScalarMap.
+  ///
+  /// This function allows to remove values from the ScalarMap. This is useful
+  /// if the corresponding alloca instruction will be deleted (or moved into
+  /// another module), as without removing these values the underlying
+  /// AssertingVH will trigger due to us still keeping reference to this
+  /// scalar.
+  ///
+  /// @param ScalarBase The value to remove.
+  void freeScalarAlloc(Value *ScalarBase) { ScalarMap.erase(ScalarBase); }
+
   /// @brief Return the PHi-node alloca for @p ScalarBase
   ///
   /// If no alloca was mapped to @p ScalarBase a new one is created.