From: Chris Lattner <sabre@nondot.org>
Date: Tue, 20 Apr 2010 00:47:08 +0000 (+0000)
Subject: make the inliner do less work for leaf functions.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=4471136e4db67f5b6cf064cb3b0a7668f15bfe6c;p=oota-llvm.git

make the inliner do less work for leaf functions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101846 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Transforms/IPO/Inliner.cpp b/lib/Transforms/IPO/Inliner.cpp
index 07918543d40..6c732d21f28 100644
--- a/lib/Transforms/IPO/Inliner.cpp
+++ b/lib/Transforms/IPO/Inliner.cpp
@@ -333,6 +333,10 @@ bool Inliner::runOnSCC(CallGraphSCC &SCC) {
 
   DEBUG(dbgs() << ": " << CallSites.size() << " call sites.\n");
 
+  // If there are no calls in this function, exit early.
+  if (CallSites.empty())
+    return false;
+  
   // Now that we have all of the call sites, move the ones to functions in the
   // current SCC to the end of the list.
   unsigned FirstCallInSCC = CallSites.size();