From: Dale Johannesen <dalej@apple.com>
Date: Sat, 24 Jan 2009 01:27:33 +0000 (+0000)
Subject: Improve the inlining cost function a bit.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=e4e094b52d278ea112cadd6aef5e565e1a2bcb1d;p=oota-llvm.git

Improve the inlining cost function a bit.
Little practical effect.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62908 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Transforms/Utils/InlineCost.cpp b/lib/Transforms/Utils/InlineCost.cpp
index 80516723d0c..37d2c0352ac 100644
--- a/lib/Transforms/Utils/InlineCost.cpp
+++ b/lib/Transforms/Utils/InlineCost.cpp
@@ -121,9 +121,12 @@ void InlineCostAnalyzer::FunctionInfo::analyzeFunction(Function *F) {
           }
         
         // Calls often compile into many machine instructions.  Bump up their
-        // cost to reflect this.
-        if (!isa<IntrinsicInst>(II))
-          NumInsts += 5;
+        // cost to reflect this.  Allow an extra instruction per parameter.
+        if (!isa<IntrinsicInst>(II)) {
+          for (CallSite::arg_iterator I = CS.arg_begin(), E = CS.arg_end();
+               I != E; ++I)
+            NumInsts ++;
+        }
       }
       
       if (const AllocaInst *AI = dyn_cast<AllocaInst>(II)) {