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Document noredzone and noimplicitfloat function attributes.

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llvm-svn: 73246
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Devang Patel 2009-06-12 19:45:19 +00:00
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1 changed files with 12 additions and 4 deletions
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@ -1091,19 +1091,27 @@ stack before the local variables that's checked upon return from the function to
see if it has been overwritten. A heuristic is used to determine if a function see if it has been overwritten. A heuristic is used to determine if a function
needs stack protectors or not. needs stack protectors or not.
<p>If a function that has an <tt>ssp</tt> attribute is inlined into a function <br><br>If a function that has an <tt>ssp</tt> attribute is inlined into a function
that doesn't have an <tt>ssp</tt> attribute, then the resulting function will that doesn't have an <tt>ssp</tt> attribute, then the resulting function will
have an <tt>ssp</tt> attribute.</p></dd> have an <tt>ssp</tt> attribute.</dd>
<dt><tt>sspreq</tt></dt> <dt><tt>sspreq</tt></dt>
<dd>This attribute indicates that the function should <em>always</em> emit a <dd>This attribute indicates that the function should <em>always</em> emit a
stack smashing protector. This overrides the <tt><a href="#ssp">ssp</a></tt> stack smashing protector. This overrides the <tt><a href="#ssp">ssp</a></tt>
function attribute. function attribute.
<p>If a function that has an <tt>sspreq</tt> attribute is inlined into a If a function that has an <tt>sspreq</tt> attribute is inlined into a
function that doesn't have an <tt>sspreq</tt> attribute or which has function that doesn't have an <tt>sspreq</tt> attribute or which has
an <tt>ssp</tt> attribute, then the resulting function will have an <tt>ssp</tt> attribute, then the resulting function will have
an <tt>sspreq</tt> attribute.</p></dd> an <tt>sspreq</tt> attribute.</dd>
<dt><tt>noredzone</tt></dt>
<dd>This attribute indicates that the code generator should not enforce red zone
mandated by target specific ABI.</dd>
<dt><tt>noimplicitfloat</tt></dt>
<dd>This attributes disables implicit floating point instructions.</dd>
</dl> </dl>
</div> </div>