Custom call IC for Math.floor.

src/ia32/macro-assembler-ia32.cc

 // Copyright 2006-2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1535 matching lines @@
     if (push_pop) {
       add(Operand(esp), Immediate(kPointerSize));  // Pop.
     }
     if (!scratch.is(dst)) {
       mov(dst, scratch);
     }
   }
 }
 
 
+void MacroAssembler::LoadPowerOf2(XMMRegister dst,
+                                  Register scratch,
+                                  int power) {
+  ASSERT(is_uintn(power + HeapNumber::kExponentBias,
+                  HeapNumber::kExponentBits));
+  mov(scratch, Immediate(power + HeapNumber::kExponentBias));
+  movd(dst, Operand(scratch));
+  psllq(dst, HeapNumber::kMantissaBits);
+}
+
+
 void MacroAssembler::JumpIfInstanceTypeIsNotSequentialAscii(
     Register instance_type,
     Register scratch,
     Label* failure) {
   if (!scratch.is(instance_type)) {
     mov(scratch, instance_type);
   }
   and_(scratch,
        kIsNotStringMask | kStringRepresentationMask | kStringEncodingMask);
   cmp(scratch, kStringTag | kSeqStringTag | kAsciiStringTag);
@@ skipping 88 matching lines @@
 
   // Check that the code was patched as expected.
   ASSERT(masm_.pc_ == address_ + size_);
   ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap);
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32