9 Declarations [dcl.dcl]

9.9 The asm declaration [dcl.asm]

An asm declaration has the form
asm-declaration:
	attribute-specifier-seq asm ( string-literal ) ;
The asm declaration is conditionally-supported; its meaning is implementation-defined.
The optional attribute-specifier-seq in an asm-declaration appertains to the asm declaration.
[Note
:
Typically it is used to pass information through the implementation to an assembler.
end note
]