The NASM 2 series support x86-64, and is the production version of NASM
since 2007.
+\S{cl-2.10} Version 2.10
+
+\b When optimization is enabled, \c{mov r64,imm} now optimizes to the
+ shortest form possible between:
+
+\c mov r32,imm32 ; 5 bytes
+\c mov r64,imm32 ; 7 bytes
+\c mov r64,imm64 ; 10 bytes
+
+To force a specific form, use the \c{STRICT} keyword, see \k{strict}.
+
+ \S{cl-2.09.04} Version 2.09.04
+
+ \b Fix incorrect labels offset for VEX intructions.
+
+ \b Eliminate bogus warning on implicit operand size override.
+
+ \b \c{%if} term could not handle 64 bit numbers.
+
+ \b The COFF backend was limiting relocations number to 16 bits even if
+ in real there were a way more relocations.
+
+
\S{cl-2.09.03} Version 2.09.03
\b Print \c{%macro} name inside \c{%rep} blocks on error.