Add a check to make sure we don't crash with strange configurations where we do fast...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132789 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/X86/X86InstrInfo.cpp b/lib/Target/X86/X86InstrInfo.cpp
index 18d71da47410193810d3fb17bb883dd051518da4..f98497f654b15f7c647aab821f5baf4abe526230 100644 (file)
--- a/lib/Target/X86/X86InstrInfo.cpp
+++ b/lib/Target/X86/X86InstrInfo.cpp
@@ -2392,6 +2392,10 @@ MachineInstr* X86InstrInfo::foldMemoryOperandImpl(MachineFunction &MF,
       return 0;
     }
 
+  // Conservatively fail out for loads without a memoperand.
+  if (LoadMI->memoperands_empty())
+    return 0;
+
   // Determine the alignment of the load.
   unsigned Alignment = 0;
   if (LoadMI->hasOneMemOperand())