Custom call IC for Math.floor.

src/ia32/macro-assembler-ia32.cc

Index: src/ia32/macro-assembler-ia32.cc
diff --git a/src/ia32/macro-assembler-ia32.cc b/src/ia32/macro-assembler-ia32.cc
index 87e25d73dbd113234e8de6ae848afc8d9034cb29..f8dabd5411cecd465b5f739c6ce179de080f8e84 100644
--- a/src/ia32/macro-assembler-ia32.cc
+++ b/src/ia32/macro-assembler-ia32.cc
@@ -1553,6 +1553,17 @@ void MacroAssembler::ConvertToInt32(Register dst,
 }
 
 
+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,