A64: Implement HRandom.

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 c0b6309289752d0c2ab38acadbc846fa0c3ea530..7118171fec4890780e7fcea7a5aa422778d52f5b 100644
--- a/src/a64/lithium-a64.cc
+++ b/src/a64/lithium-a64.cc
@@ -1265,6 +1265,15 @@ LInstruction* LChunkBuilder::DoCompareIDAndBranch(HCompareIDAndBranch* instr) {
 }
 
 
+LInstruction* LChunkBuilder::DoRandom(HRandom* instr) {
+  ASSERT(instr->representation().IsDouble());
+  ASSERT(instr->global_object()->representation().IsTagged());
+  LOperand* global_object = UseFixed(instr->global_object(), x0);
+  LRandom* result = new(zone()) LRandom(global_object);
+  return MarkAsCall(DefineFixedDouble(result, d7), instr);
+}
+
+
 LInstruction* LChunkBuilder::DoCompareGeneric(HCompareGeneric* instr) {
   ASSERT(instr->left()->representation().IsTagged());
   ASSERT(instr->right()->representation().IsTagged());
@@ -1879,11 +1888,6 @@ LInstruction* LChunkBuilder::DoPushArgument(HPushArgument* instr) {
 }
 
 
-LInstruction* LChunkBuilder::DoRandom(HRandom* instr) {
-  UNIMPLEMENTED_INSTRUCTION();
-}
-
-
 LInstruction* LChunkBuilder::DoRegExpLiteral(HRegExpLiteral* instr) {
   return MarkAsCall(DefineFixed(new(zone()) LRegExpLiteral, x0), instr);
 }