A64: Synchronize with r16756.

src/a64/lithium-a64.cc

Index: src/a64/lithium-a64.cc
diff --git a/src/a64/lithium-a64.cc b/src/a64/lithium-a64.cc
index 2002835145838c538c6ad486c3370c82dbfb2765..221853b2ae5d553de01da2d6d21a37a012a87e2b 100644
--- a/src/a64/lithium-a64.cc
+++ b/src/a64/lithium-a64.cc
@@ -976,6 +976,7 @@ LInstruction* LChunkBuilder::DoBitwise(HBitwise* instr) {
   if (instr->representation().IsSmiOrInteger32()) {
     ASSERT(instr->left()->representation().Equals(instr->representation()));
     ASSERT(instr->right()->representation().Equals(instr->representation()));
+    ASSERT(instr->CheckFlag(HValue::kTruncatingToInt32));
 
     LOperand* left = UseRegisterAtStart(instr->BetterLeftOperand());
     LOperand* right =
@@ -1347,6 +1348,7 @@ LInstruction* LChunkBuilder::DoCompareNumericAndBranch(
 }
 
 
+// TODO(all): This will disappear when Math.random is rewritten in JavaScript.
 LInstruction* LChunkBuilder::DoRandom(HRandom* instr) {
   ASSERT(instr->representation().IsDouble());
   ASSERT(instr->global_object()->representation().IsTagged());