Clear CachedFunctionInfo upon Pass::releaseMemory. Because ValueMap will abort

on RAUW of functions, this is a correctness issue instead of a mere memory
usage problem.


No testcase until the new MergeFunctions can land.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103653 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 9 insertions, 1 deletions

diff --git a/lib/Analysis/InlineCost.cpp b/lib/Analysis/InlineCost.cpp
index 6271371597..10c2d79bef 100644
--- a/lib/Analysis/InlineCost.cpp
+++ b/lib/Analysis/InlineCost.cpp
@@ -455,6 +455,11 @@ InlineCostAnalyzer::growCachedCostInfo(Function *Caller, Function *Callee) {
   else
     CallerMetrics.NumInsts = 0;
   
-  // We are not updating the argumentweights. We have already determined that
+  // We are not updating the argument weights. We have already determined that
   // Caller is a fairly large function, so we accept the loss of precision.
 }
+
+/// clear - empty the cache of inline costs
+void InlineCostAnalyzer::clear() {
+  CachedFunctionInfo.clear();
+}
diff --git a/lib/Transforms/IPO/InlineSimple.cpp b/lib/Transforms/IPO/InlineSimple.cpp
index 46cf4b25e4..74b4a1c10e 100644
--- a/lib/Transforms/IPO/InlineSimple.cpp
+++ b/lib/Transforms/IPO/InlineSimple.cpp
@@ -49,6 +49,9 @@ namespace {
       CA.growCachedCostInfo(Caller, Callee);
     }
     virtual bool doInitialization(CallGraph &CG);
+    void releaseMemory() {
+      CA.clear();
+    }
   };
 }