respect inline=never and inline=always notes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55673 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/IPO/Inliner.cpp b/lib/Transforms/IPO/Inliner.cpp
index 1c3d5a8..e9ae21f 100644
--- a/lib/Transforms/IPO/Inliner.cpp
+++ b/lib/Transforms/IPO/Inliner.cpp
@@ -140,7 +140,14 @@
         int InlineCost = getInlineCost(CS);
         float FudgeFactor = getInlineFudgeFactor(CS);
 
-        if (InlineCost >= (int)(InlineThreshold * FudgeFactor)) {
+        Function *Fn = CS.getCalledFunction();
+        bool AlwaysInline = false;
+        if (Fn && (Fn->getNotes() & FP_AlwaysInline))
+          AlwaysInline = true;
+        if (Fn && (Fn->getNotes() & FP_NoInline))
+          DOUT << "NOT Inlining: inline=never is set" << *CS.getInstruction();
+        else if (!AlwaysInline 
+                 && InlineCost >= (int)(InlineThreshold * FudgeFactor)) {
           DOUT << "    NOT Inlining: cost=" << InlineCost
                << ", Call: " << *CS.getInstruction();
         } else {