[llvm] r278312 - Make more fields of InlineParams Optional.

[Easwaran Raman via llvm-commits]

Author: eraman
Date: Wed Aug 10 22:58:05 2016
New Revision: 278312

URL: http://llvm.org/viewvc/llvm-project?rev=278312&view=rev
Log:
Make more fields of InlineParams Optional.

Differential revision: https://reviews.llvm.org/D23386

Modified:
    llvm/trunk/include/llvm/Analysis/InlineCost.h
    llvm/trunk/lib/Analysis/InlineCost.cpp

Modified: llvm/trunk/include/llvm/Analysis/InlineCost.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Analysis/InlineCost.h?rev=278312&r1=278311&r2=278312&view=diff
==============================================================================
--- llvm/trunk/include/llvm/Analysis/InlineCost.h (original)
+++ llvm/trunk/include/llvm/Analysis/InlineCost.h Wed Aug 10 22:58:05 2016
@@ -124,7 +124,7 @@ struct InlineParams {
   int DefaultThreshold;
 
   /// Threshold to use for callees with inline hint.
-  int HintThreshold;
+  Optional<int> HintThreshold;
 
   /// Threshold to use for cold callees.
   Optional<int> ColdThreshold;
@@ -136,7 +136,7 @@ struct InlineParams {
   Optional<int> OptMinSizeThreshold;
 
   /// Threshold to use when the callsite is considered hot.
-  int HotCallSiteThreshold;
+  Optional<int> HotCallSiteThreshold;
 };
 
 /// Generate the parameters to tune the inline cost analysis based only on the

Modified: llvm/trunk/lib/Analysis/InlineCost.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Analysis/InlineCost.cpp?rev=278312&r1=278311&r2=278312&view=diff
==============================================================================
--- llvm/trunk/lib/Analysis/InlineCost.cpp (original)
+++ llvm/trunk/lib/Analysis/InlineCost.cpp Wed Aug 10 22:58:05 2016
@@ -624,6 +624,11 @@ void CallAnalyzer::updateThreshold(CallS
     return B ? std::min(A, B.getValue()) : A;
   };
 
+  // return max(A, B) if B is valid.
+  auto MaxIfValid = [](int A, Optional<int> B) {
+    return B ? std::max(A, B.getValue()) : A;
+  };
+
   // Use the OptMinSizeThreshold or OptSizeThreshold knob if they are available
   // and reduce the threshold if the caller has the necessary attribute.
   if (Caller->optForMinSize())
@@ -644,11 +649,10 @@ void CallAnalyzer::updateThreshold(CallS
   bool InlineHint = Callee.hasFnAttribute(Attribute::InlineHint) ||
                     PSI->isHotFunction(&Callee);
   if (InlineHint && !Caller->optForMinSize())
-    Threshold = std::max(Threshold, Params.HintThreshold);
+    Threshold = MaxIfValid(Threshold, Params.HintThreshold);
 
-  if (HotCallsite && HotCallSiteThreshold > Threshold &&
-      !Caller->optForMinSize())
-    Threshold = std::max(Threshold, Params.HotCallSiteThreshold);
+  if (HotCallsite && !Caller->optForMinSize())
+    Threshold = MaxIfValid(Threshold, Params.HotCallSiteThreshold);
 
   bool ColdCallee = PSI->isColdFunction(&Callee);
   // For cold callees, use the ColdThreshold knob if it is available and reduces