Fill in type legalization for MERGE_VALUES in all the various cases. Patch by Micah Villmow. (No testcase because the issue only showed up in an out-of-tree backend.)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138877 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 14 insertions, 0 deletions

diff --git a/lib/CodeGen/SelectionDAG/LegalizeTypes.h b/lib/CodeGen/SelectionDAG/LegalizeTypes.h
index 16d8f10644..23430030e6 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeTypes.h
+++ b/lib/CodeGen/SelectionDAG/LegalizeTypes.h
@@ -148,12 +148,20 @@ private:
   SDValue CreateStackStoreLoad(SDValue Op, EVT DestVT);
   bool CustomLowerNode(SDNode *N, EVT VT, bool LegalizeResult);
   bool CustomWidenLowerNode(SDNode *N, EVT VT);
+
+  // DecomposeMERGE_VALUES  takes a SDNode and returns the first
+  // illegal operand that needs to be modified. 
+  // All other nodes are legalized, whether they are legal or not.
+  // The resulting SDValue needs to be modified to make it legal.
+  SDValue DecomposeMERGE_VALUES(SDNode *N);
+
   SDValue GetVectorElementPointer(SDValue VecPtr, EVT EltVT, SDValue Index);
   SDValue JoinIntegers(SDValue Lo, SDValue Hi);
   SDValue LibCallify(RTLIB::Libcall LC, SDNode *N, bool isSigned);
   SDValue MakeLibCall(RTLIB::Libcall LC, EVT RetVT,
                       const SDValue *Ops, unsigned NumOps, bool isSigned,
                       DebugLoc dl);
+  
 	std::pair<SDValue, SDValue> ExpandChainLibCall(RTLIB::Libcall LC,
 									                               SDNode *Node, bool isSigned);
 	std::pair<SDValue, SDValue> ExpandAtomic(SDNode *Node);
@@ -206,6 +214,7 @@ private:
 
   // Integer Result Promotion.
   void PromoteIntegerResult(SDNode *N, unsigned ResNo);
+  SDValue PromoteIntRes_MERGE_VALUES(SDNode *N);
   SDValue PromoteIntRes_AssertSext(SDNode *N);
   SDValue PromoteIntRes_AssertZext(SDNode *N);
   SDValue PromoteIntRes_Atomic1(AtomicSDNode *N);
@@ -289,6 +298,7 @@ private:
 
   // Integer Result Expansion.
   void ExpandIntegerResult(SDNode *N, unsigned ResNo);
+  void ExpandIntRes_MERGE_VALUES      (SDNode *N, SDValue &Lo, SDValue &Hi);
   void ExpandIntRes_ANY_EXTEND        (SDNode *N, SDValue &Lo, SDValue &Hi);
   void ExpandIntRes_AssertSext        (SDNode *N, SDValue &Lo, SDValue &Hi);
   void ExpandIntRes_AssertZext        (SDNode *N, SDValue &Lo, SDValue &Hi);
@@ -365,6 +375,7 @@ private:
 
   // Result Float to Integer Conversion.
   void SoftenFloatResult(SDNode *N, unsigned OpNo);
+  SDValue SoftenFloatRes_MERGE_VALUES(SDNode *N);
   SDValue SoftenFloatRes_BITCAST(SDNode *N);
   SDValue SoftenFloatRes_BUILD_PAIR(SDNode *N);
   SDValue SoftenFloatRes_ConstantFP(ConstantFPSDNode *N);
@@ -491,6 +502,7 @@ private:
 
   // Vector Result Scalarization: <1 x ty> -> ty.
   void ScalarizeVectorResult(SDNode *N, unsigned OpNo);
+  SDValue ScalarizeVecRes_MERGE_VALUES(SDNode *N);
   SDValue ScalarizeVecRes_BinOp(SDNode *N);
   SDValue ScalarizeVecRes_UnaryOp(SDNode *N);
   SDValue ScalarizeVecRes_InregOp(SDNode *N);
@@ -584,6 +596,7 @@ private:
 
   // Widen Vector Result Promotion.
   void WidenVectorResult(SDNode *N, unsigned ResNo);
+  SDValue WidenVecRes_MERGE_VALUES(SDNode* N);
   SDValue WidenVecRes_BITCAST(SDNode* N);
   SDValue WidenVecRes_BUILD_VECTOR(SDNode* N);
   SDValue WidenVecRes_CONCAT_VECTORS(SDNode* N);
@@ -702,6 +715,7 @@ private:
   }
 
   // Generic Result Expansion.
+  void ExpandRes_MERGE_VALUES      (SDNode *N, SDValue &Lo, SDValue &Hi);
   void ExpandRes_BITCAST           (SDNode *N, SDValue &Lo, SDValue &Hi);
   void ExpandRes_BUILD_PAIR        (SDNode *N, SDValue &Lo, SDValue &Hi);
   void ExpandRes_EXTRACT_ELEMENT   (SDNode *N, SDValue &Lo, SDValue &Hi);