Revert r15419: "Generate StoreGlobal stubs with Hydrogen"

src/x64/lithium-gap-resolver-x64.cc

Index: src/x64/lithium-gap-resolver-x64.cc
diff --git a/src/x64/lithium-gap-resolver-x64.cc b/src/x64/lithium-gap-resolver-x64.cc
index adb1afa247c0e8aa0f2b653427c675081f6e048d..aed4f366478a4e3f1f4f1b261d40e12b464d4d58 100644
--- a/src/x64/lithium-gap-resolver-x64.cc
+++ b/src/x64/lithium-gap-resolver-x64.cc
@@ -202,20 +202,6 @@ void LGapResolver::EmitMove(int index) {
       } else {
         __ LoadObject(dst, cgen_->ToHandle(constant_source));
       }
-    } else if (destination->IsDoubleRegister()) {
-      double v = cgen_->ToDouble(constant_source);
-      uint64_t int_val = BitCast<uint64_t, double>(v);
-      int32_t lower = static_cast<int32_t>(int_val);
-      int32_t upper = static_cast<int32_t>(int_val >> (kBitsPerInt));
-      XMMRegister dst = cgen_->ToDoubleRegister(destination);
-      if (int_val == 0) {
-        __ xorps(dst, dst);
-      } else {
-        __ push(Immediate(upper));
-        __ push(Immediate(lower));
-        __ movsd(dst, Operand(rsp, 0));
-        __ addq(rsp, Immediate(kDoubleSize));
-      }
     } else {
       ASSERT(destination->IsStackSlot());
       Operand dst = cgen_->ToOperand(destination);