[llvm] r289030 - [AVR] Add an assertion to ensure we don't emit LPM when it's unsupported

[Dylan McKay via llvm-commits]

Author: dylanmckay
Date: Thu Dec  8 02:34:13 2016
New Revision: 289030

URL: http://llvm.org/viewvc/llvm-project?rev=289030&view=rev
Log:
[AVR] Add an assertion to ensure we don't emit LPM when it's unsupported

Modified:
    llvm/trunk/lib/Target/AVR/AVRISelDAGToDAG.cpp

Modified: llvm/trunk/lib/Target/AVR/AVRISelDAGToDAG.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AVR/AVRISelDAGToDAG.cpp?rev=289030&r1=289029&r2=289030&view=diff
==============================================================================
--- llvm/trunk/lib/Target/AVR/AVRISelDAGToDAG.cpp (original)
+++ llvm/trunk/lib/Target/AVR/AVRISelDAGToDAG.cpp Thu Dec  8 02:34:13 2016
@@ -366,6 +366,8 @@ template <> bool AVRDAGToDAGISel::select
     return selectIndexedLoad(N);
   }
 
+  assert(Subtarget->hasLPM() && "cannot load from program memory on this mcu");
+
   // This is a flash memory load, move the pointer into R31R30 and emit
   // the lpm instruction.
   MVT VT = LD->getMemoryVT().getSimpleVT();