struct improvement, part1: create more LCL_FLD (#48377)

* Add additional tests. * Use LclFld when copy to/from promoted from/to an unpromoted struct/block. * Response review.
dotnet · Mar 19, 2021 · a03a675 · a03a675
1 parent 93cee26
commit a03a675
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diff --git a/src/coreclr/jit/compiler.h b/src/coreclr/jit/compiler.h
@@ -5890,6 +5890,8 @@ class Compiler
     GenTree* fgMorphSmpOpOptional(GenTreeOp* tree);
     GenTree* fgMorphConst(GenTree* tree);
 
+    bool fgMorphCanUseLclFldForCopy(unsigned lclNum1, unsigned lclNum2);
+
     GenTreeLclVar* fgMorphTryFoldObjAsLclVar(GenTreeObj* obj);
     GenTree* fgMorphCommutative(GenTreeOp* tree);