[Bug rtl-optimization/24414] Old-style asms don't clobber memory

[pinskia at gcc dot gnu dot org]

------- Comment #2 from pinskia at gcc dot gnu dot org  2005-10-17 20:56 -------
An asm instruction without any operands or clobbers (an "old style" asm) will
be treated identically to a volatile asm instruction.

Or what is in the newer doc:
                        3933: An @code{asm} instruction without any output
operands will be treated
                        3934: identically to a volatile @code{asm} instruction.

and in PR 19341 we decided that volatile asm does not clobber memory.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24414