The Intel® C++ Compiler for Itanium(TM)-based systems does not support assembly language inline programming. The Intel C++ Compiler for IA-32 supports use of all the MMX(TM) instructions and Streaming SIMD Extensions in inline assembly ( __asm ) blocks. The compiler also accepts the new syntax MMWORD PTR and XMMWORD PTR to refer to 64- and 128-bit data.