Fix pessimizing moves in devel/llvm36, for the benefit of other ports

PR:		202596
Submitted by:	dim

1 files changed, 20 insertions, 0 deletions

diff --git a/devel/llvm36/files/patch-include__llvm__IR__PassManager.h b/devel/llvm36/files/patch-include__llvm__IR__PassManager.h
new file mode 100644
index 000000000000..ae890f16f866
--- /dev/null
+++ b/devel/llvm36/files/patch-include__llvm__IR__PassManager.h
@@ -0,0 +1,20 @@
+--- include/llvm/IR/PassManager.h.orig	2015-01-13 23:42:38.000000000 +0100
++++ include/llvm/IR/PassManager.h	2015-08-23 18:33:44.006587000 +0200
+@@ -502,7 +502,7 @@ private:
+   PreservedAnalyses invalidateImpl(IRUnitT &IR, PreservedAnalyses PA) {
+     // Short circuit for a common case of all analyses being preserved.
+     if (PA.areAllPreserved())
+-      return std::move(PA);
++      return PA;
+ 
+     if (DebugLogging)
+       dbgs() << "Invalidating all non-preserved analyses for: "
+@@ -542,7 +542,7 @@ private:
+     if (ResultsList.empty())
+       AnalysisResultLists.erase(&IR);
+ 
+-    return std::move(PA);
++    return PA;
+   }
+ 
+   /// \brief List of function analysis pass IDs and associated concept pointers.