It works perfectly!<div><br></div><div>I'm a bit newbie in OpenCL and I didn't know that it was possible to enable this extension directly in the source code, it's really very simple, ;)</div><div><br></div><div>
Thank you so much!<br><br><div class="gmail_quote">2012/3/13 Benyei, Guy <span dir="ltr"><<a href="mailto:guy.benyei@intel.com" target="_blank">guy.benyei@intel.com</a>></span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Hi Jorge,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">As it defined by the OpenCL spec, one should use:<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New";color:blue">#pragma</span><span style="font-size:10.0pt;font-family:"Courier New""> OPENCL EXTENSION cl_khr_fp64 : enable<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">in order to enable this OpenCL extension. This pragma works fine in Clang.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Thanks<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><img width="420" height="116" src="cid:image001.png@01CD0127.9F657070" alt="email_signature_guy_new2"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></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""> <a href="mailto:cfe-dev-bounces@cs.uiuc.edu" target="_blank">cfe-dev-bounces@cs.uiuc.edu</a> [mailto:<a href="mailto:cfe-dev-bounces@cs.uiuc.edu" target="_blank">cfe-dev-bounces@cs.uiuc.edu</a>]
<b>On Behalf Of </b>Jorge Fern?ndez Fabeiro<br>
<b>Sent:</b> Tuesday, March 13, 2012 14:32<br>
<b>To:</b> Lista de Correo Clang Developers<br>
<b>Subject:</b> Re: [cfe-dev] Enabling "cl_khr_fp64" in order to visit OpenCL code with doubles<u></u><u></u></span></p>
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<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Sorry, I forgot to tell you the Clang and LLVM revisions I'm using:<u></u><u></u></p>
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<p class="MsoNormal">Clang: r130668 <u></u><u></u></p>
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<p class="MsoNormal">LLVM: r130661<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">I'm using them because they were the latest ones when I started with my project in July 2011.<u></u><u></u></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">Thanks so much again!<u></u><u></u></p>
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<p class="MsoNormal">El 13 de marzo de 2012 13:28, Jorge Fernández Fabeiro <<a href="mailto:fabeirojorge@gmail.com" target="_blank">fabeirojorge@gmail.com</a>> escribió:<u></u><u></u></p>
<p class="MsoNormal">Hi!<u></u><u></u></p>
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<p class="MsoNormal">I'm working in a project about source-to-source code transformations and I've just programmed a tool using Clang libraries (it's a program I've written in C++, it doesn't use Clang command-line tools at all) that visits the code of some
given "for" loops and apply some optimization transformations (now, only loop unrolling). <u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">Till today I've been testing the tool with OpenCL kernels that operate with integers or floats, but now I'm trying to process a kernel that operates with doubles, and, unfortunately the tool crashed. First, I tried to dump the CompoundStmt
that represents the body of a visited "for" loop, and I discovered that it's empty when the visited code contains any reference to double variables. After this shocking problem, I replaced the "double" variables with "float" ones and all went smooth. Considering
that workaround, I also tried to emit the LLVM representation of my OpenCL kernel with doubles, and clang gave me this error: "error: use of type 'double' requires cl_khr_fp64 extension to be enabled".<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">So, is there any method or flag in the classes of the libraries in order to enable this extension?<u></u><u></u></p>
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<p class="MsoNormal">Thanks so much in advance,<u></u><u></u></p>
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<p class="MsoNormal">Jorge.<u></u><u></u></p>
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