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extend.texi (Extended Asm): Document inability to give asm statements access to condition codes.

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* extend.texi (Extended Asm): Document inability to give asm
        statements access to condition codes.

From-SVN: r33709
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Geoff Berry 2000-05-05 16:26:12 +00:00 committed by Jeff Law
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@ -1,3 +1,8 @@
2000-05-05 Geoff Berry <geoffb@bops.com>
* extend.texi (Extended Asm): Document inability to give asm
statements access to condition codes.
2000-05-05 Marek Michalkiewicz <marekm@linux.org.pl>
* varasm.c (asm_emit_uninitialised): Use 0, not NULL

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gcc/extend.texi
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@ -2678,6 +2678,10 @@ instructions would alter the condition code before there was time to
test it. This problem doesn't arise for ordinary ``test'' and
``compare'' instructions because they don't have any output operands.
For reasons similar to those described above, it is not possible to give
an assembler instruction access to the condition code left by previous
instructions.
If you are writing a header file that should be includable in ANSI C
programs, write @code{__asm__} instead of @code{asm}. @xref{Alternate
Keywords}.