[compiler] Delay allocation of code-embedded heap numbers.

src/arm64/macro-assembler-arm64.h

Index: src/arm64/macro-assembler-arm64.h
diff --git a/src/arm64/macro-assembler-arm64.h b/src/arm64/macro-assembler-arm64.h
index e60fbe33fe57c355131d7a1cd6311dbf69af671c..b914f19c3e690d555b648d11a063a8a724d7ddeb 100644
--- a/src/arm64/macro-assembler-arm64.h
+++ b/src/arm64/macro-assembler-arm64.h
@@ -485,7 +485,7 @@ class MacroAssembler : public Assembler {
                    const CPURegister& rt2,
                    const MemOperand& src);
   // Load a literal from the inline constant pool.
-  inline void Ldr(const CPURegister& rt, const Immediate& imm);
+  inline void Ldr(const CPURegister& rt, const Operand& imm);
   // Helper function for double immediate.
   inline void Ldr(const CPURegister& rt, double imm);
   inline void Lsl(const Register& rd, const Register& rn, unsigned shift);