Require smi for keyed store to smi.

src/arm/lithium-arm.cc

Index: src/arm/lithium-arm.cc
diff --git a/src/arm/lithium-arm.cc b/src/arm/lithium-arm.cc
index 9ed53293e31fadf285020922c22b9007c2101de7..e26c6d993fb20195dbbfe2e0dbc7c2d6c04cc14e 100644
--- a/src/arm/lithium-arm.cc
+++ b/src/arm/lithium-arm.cc
@@ -2252,7 +2252,7 @@ LInstruction* LChunkBuilder::DoStoreKeyed(HStoreKeyed* instr) {
       val = UseTempRegister(instr->value());
       key = UseRegisterOrConstantAtStart(instr->key());
     } else {
-      ASSERT(instr->value()->representation().IsTagged());
+      ASSERT(instr->value()->representation().IsSmiOrTagged());
       object = UseTempRegister(instr->elements());
       val = needs_write_barrier ? UseTempRegister(instr->value())
           : UseRegisterAtStart(instr->value());