Add MLA alias for ARMv4 support.

[oota-llvm.git] / lib / CodeGen / ScheduleDAGInstrs.cpp

diff --git a/lib/CodeGen/ScheduleDAGInstrs.cpp b/lib/CodeGen/ScheduleDAGInstrs.cpp
index 703ae3d9cc58559cb4b2e648cf1310b4963afe15..65075893e5ab43e9e68871060d9fb296099c6ab7 100644 (file)
--- a/lib/CodeGen/ScheduleDAGInstrs.cpp
+++ b/lib/CodeGen/ScheduleDAGInstrs.cpp
@@ -512,6 +512,10 @@ static bool MIsNeedChainEdge(AliasAnalysis *AA, const MachineFrameInfo *MFI,
   if (MIa == MIb)
     return false;
 
+  // FIXME: Need to handle multiple memory operands to support all targets.
+  if (!MIa->hasOneMemOperand() || !MIb->hasOneMemOperand())
+    return true;
+
   if (isUnsafeMemoryObject(MIa, MFI) || isUnsafeMemoryObject(MIb, MFI))
     return true;
 
@@ -527,10 +531,6 @@ static bool MIsNeedChainEdge(AliasAnalysis *AA, const MachineFrameInfo *MFI,
   MachineMemOperand *MMOa = *MIa->memoperands_begin();
   MachineMemOperand *MMOb = *MIb->memoperands_begin();
 
-  // FIXME: Need to handle multiple memory operands to support all targets.
-  if (!MIa->hasOneMemOperand() || !MIb->hasOneMemOperand())
-    llvm_unreachable("Multiple memory operands.");
-
   // The following interface to AA is fashioned after DAGCombiner::isAlias
   // and operates with MachineMemOperand offset with some important
   // assumptions: