Reland "Implement Math.random() purely in JavaScript" plus fixes.

src/ia32/lithium-ia32.cc

Index: src/ia32/lithium-ia32.cc
diff --git a/src/ia32/lithium-ia32.cc b/src/ia32/lithium-ia32.cc
index d4c17ab4708a03ab49de4ff34fe5ede8f4c24c8d..5343773daff5c6cf7b43ed5ca1ebfd5d26a007df 100644
--- a/src/ia32/lithium-ia32.cc
+++ b/src/ia32/lithium-ia32.cc
@@ -1695,19 +1695,6 @@ LInstruction* LChunkBuilder::DoPower(HPower* instr) {
 }
 
 
-LInstruction* LChunkBuilder::DoRandom(HRandom* instr) {
-  ASSERT(instr->representation().IsDouble());
-  ASSERT(instr->global_object()->representation().IsTagged());
-  LOperand* global_object = UseTempRegister(instr->global_object());
-  LOperand* scratch = TempRegister();
-  LOperand* scratch2 = TempRegister();
-  LOperand* scratch3 = TempRegister();
-  LRandom* result = new(zone()) LRandom(
-      global_object, scratch, scratch2, scratch3);
-  return DefineFixedDouble(result, xmm1);
-}
-
-
 LInstruction* LChunkBuilder::DoCompareGeneric(HCompareGeneric* instr) {
   ASSERT(instr->left()->representation().IsSmiOrTagged());
   ASSERT(instr->right()->representation().IsSmiOrTagged());