[X86] Don't add stores to the autogenerated load folding tables if the register and...

This can cause the amount of the memory written to be changed which would be bad.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@334480 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/utils/TableGen/X86FoldTablesEmitter.cpp b/utils/TableGen/X86FoldTablesEmitter.cpp
index 6ef339b..190ad6c 100644 (file)
--- a/utils/TableGen/X86FoldTablesEmitter.cpp
+++ b/utils/TableGen/X86FoldTablesEmitter.cpp
@@ -562,7 +562,8 @@ void X86FoldTablesEmitter::updateTables(const CodeGenInstruction *RegInstr,
     //   MOVAPSmr => (outs), (ins f128mem:$dst, VR128:$src)
     Record *RegOpRec = RegInstr->Operands[RegOutSize - 1].Rec;
     Record *MemOpRec = MemInstr->Operands[RegOutSize - 1].Rec;
-    if (isRegisterOperand(RegOpRec) && isMemoryOperand(MemOpRec))
+    if (isRegisterOperand(RegOpRec) && isMemoryOperand(MemOpRec) &&
+        getRegOperandSize(RegOpRec) == getMemOperandSize(MemOpRec))
       addEntryWithFlags(Table0, RegInstr, MemInstr, S, 0);
   }