The inliner was choosing to not consider call sites

that appear in the SCC as a result of inlining as candidates
for inlining.  Change this so that it *does* consider call 
sites that change from being indirect to being direct as a
result of inlining.  This allows it to completely 
"devirtualize" the testcase.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102146 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 7 insertions, 1 deletions

diff --git a/lib/Transforms/IPO/Inliner.cpp b/lib/Transforms/IPO/Inliner.cpp
index 19b65e8e1f..1de7b0753d 100644
--- a/lib/Transforms/IPO/Inliner.cpp
+++ b/lib/Transforms/IPO/Inliner.cpp
@@ -383,11 +383,17 @@ bool Inliner::runOnSCC(CallGraphSCC &SCC) {
         if (!shouldInline(CS))
           continue;
 
-        // Attempt to inline the function...
+        // Attempt to inline the function.
         if (!InlineCallIfPossible(CS, InlineInfo, InlinedArrayAllocas))
           continue;
         ++NumInlined;
 
+        // If inlining this function devirtualized any call sites, throw them
+        // onto our worklist to process.  They are useful inline candidates.
+        for (unsigned i = 0, e = InlineInfo.DevirtualizedCalls.size();
+             i != e; ++i)
+          CallSites.push_back(CallSite(InlineInfo.DevirtualizedCalls[i]));
+        
         // Update the cached cost info with the inlined call.
         growCachedCostInfo(Caller, Callee);
       }