A64: Synchronize with r15545.

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

 // Copyright 2011 the V8 project authors. All rights reserved.
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 // modification, are permitted provided that the following conditions are
 // met:
 //
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 //       notice, this list of conditions and the following disclaimer.
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 //       with the distribution.
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 //       from this software without specific prior written permission.
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 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include "v8.h"
 
-#if defined(V8_TARGET_ARCH_X64)
+#if V8_TARGET_ARCH_X64
 
 #include "x64/lithium-gap-resolver-x64.h"
 #include "x64/lithium-codegen-x64.h"
 
 namespace v8 {
 namespace internal {
 
 LGapResolver::LGapResolver(LCodeGen* owner)
     : cgen_(owner), moves_(32, owner->zone()) {}
 
@@ skipping 154 matching lines @@
     LConstantOperand* constant_source = LConstantOperand::cast(source);
     if (destination->IsRegister()) {
       Register dst = cgen_->ToRegister(destination);
       if (cgen_->IsSmiConstant(constant_source)) {
         __ Move(dst, cgen_->ToSmi(constant_source));
       } else if (cgen_->IsInteger32Constant(constant_source)) {
         __ movl(dst, Immediate(cgen_->ToInteger32(constant_source)));
       } 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);
       if (cgen_->IsSmiConstant(constant_source)) {
         __ Move(dst, cgen_->ToSmi(constant_source));
       } else if (cgen_->IsInteger32Constant(constant_source)) {
         // Zero top 32 bits of a 64 bit spill slot that holds a 32 bit untagged
         // value.
         __ movq(dst, Immediate(cgen_->ToInteger32(constant_source)));
       } else {
@@ skipping 102 matching lines @@
       moves_[i].set_source(source);
     }
   }
 }
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64