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<p class="MsoNormal"><span style="color:#1F497D">Hi Albert,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">The "intptr_t" type does not need special handling in Clang, since it can be created using other types. For example, the Khronos version of Clang uses the following definition in an implicit header:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<pre style="background:#FFFFCC"><span style="font-family:"Calibri","sans-serif";color:#1F497D"> </span>typedef ptrdiff_t intptr_t;<o:p></o:p></pre>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">where ptrdiff_t itself is typedef'd to something else:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><a href="https://github.com/KhronosGroup/SPIR-Tools/blob/master/headers/opencl_spir.h#L83">https://github.com/KhronosGroup/SPIR-Tools/blob/master/headers/opencl_spir.h#L83</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">The general idea is to put such declarations in a separate header, and use the "-include" argument for Clang to include this header at the beginning of the OpenCL file being compiled.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Also, have you checked out the Khronos SPIR generator, which is based on Clang? It is maintained in a separate github repository, but most of the changes there are being merged into upstream Clang. This frontend
can be combined with the SPIR-Tools header mentioned above to get almost complete support for OpenCL 1.2<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><a href="https://github.com/KhronosGroup/SPIR/tree/spir_12">https://github.com/KhronosGroup/SPIR/tree/spir_12</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Sameer.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> cfe-dev-bounces@cs.uiuc.edu [mailto:cfe-dev-bounces@cs.uiuc.edu]
<b>On Behalf Of </b>Dorrington, Albert<br>
<b>Sent:</b> Friday, February 28, 2014 1:05 AM<br>
<b>To:</b> cfe-dev@cs.uiuc.edu<br>
<b>Subject:</b> [cfe-dev] intptr_t type in OpenCL programs<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">When trying to compile a kernel that uses the ‘intptr_t’ type, I am getting an error for ‘use of undeclared identifier’<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Is the intptr_t implemented in Clang for OpenCL? <o:p></o:p></p>
<p class="MsoNormal">Where would I look in the code to find out?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks!<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b><span style="font-size:14.0pt">Al Dorrington<o:p></o:p></span></b></p>
<p class="MsoNormal"><i><span style="font-size:10.0pt">Software Engineer Sr<o:p></o:p></span></i></p>
<p class="MsoNormal"><i><span style="font-size:10.0pt">Lockheed Martin, Mission Systems and Training<o:p></o:p></span></i></p>
<p class="MsoNormal"><o:p> </o:p></p>
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