From: Eli Friedman <eli.friedman@gmail.com>
Date: Thu, 9 Jun 2011 18:55:00 +0000 (+0000)
Subject: Add a check to make sure we don't crash with strange configurations where we do fast... 
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=aebc3c1610f7ee563120ba5db7ae064d77af56c4;p=oota-llvm.git

Add a check to make sure we don't crash with strange configurations where we do fast-isel, then try to fold instructions. PR10092.



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 18d71da4741..f98497f654b 100644
--- 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())