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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Hi Seb,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>You need to use the “-ccc-host-triple” argument to Clang. We’re
planning on changing this behaviour to make it more usable.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Clang –ccc-host-triple armv7 –S –emit-llvm –mcpu=cortex-a9 –mattr=+neon<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Clang –ccc-host-triple armv7 –S –emit-llvm –mcpu=cortex-a9 –mattr=-neon<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Cheers,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>James<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:
"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'> llvmdev-bounces@cs.uiuc.edu
[mailto:llvmdev-bounces@cs.uiuc.edu] <b>On Behalf Of </b>Seb<br>
<b>Sent:</b> 28 October 2011 08:22<br>
<b>To:</b> Carl-Philip Hänsch<br>
<b>Cc:</b> llvmdev@cs.uiuc.edu<br>
<b>Subject:</b> Re: [LLVMdev] target datalayout defintion<o:p></o:p></span></p>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt'>I tried bu clang seems to
support only target on which it has been compiled.<br>
<br>
If I use:<br>
<br>
with clang -S -emit-llvm t.c -o t.ll<br>
<br>
I've got following file for t.ll <br>
<br>
; ModuleID = 't.c'<br>
<br>
target datalayout =
"e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"<br>
target triple = "x86_64-unknown-linux-gnu"<br>
<br>
Which, I think, defines datalayout for x86 64-bit target.<br>
Now If I add -march=arm or -march=x86-32 I've got following error message from
clang:<br>
<br>
error: unknown target CPU 'arm'<br>
<br>
or <br>
<br>
error: unknown target CPU 'x86-32'<br>
<br>
Is there a way to build clang so that it support cross-compilation for
ARM/x86-32 ?<br>
<br>
Best Regards<br>
Seb<br>
<br>
<br>
<o:p></o:p></p>
<div>
<p class=MsoNormal>2011/10/27 Carl-Philip Hänsch <<a
href="mailto:cphaensch@googlemail.com">cphaensch@googlemail.com</a>><o:p></o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt'>You can compile an empty C
source code with clang -S -emit-llvm and copy the data layout from there.<o:p></o:p></p>
<div>
<p class=MsoNormal>2011/10/27 Seb <<a href="mailto:babslachem@gmail.com"
target="_blank">babslachem@gmail.com</a>><o:p></o:p></p>
<div>
<div>
<p class=MsoNormal style='margin-bottom:12.0pt'>Hi all, <br>
<br>
Can someone give me advice on what should be a good definition of target
datalayout for an ARM cortex-A9 + neon target and x86 32-bit ?<br>
Shall I use a different definition for a cortex-A9 without neon ?<br>
Thanks for your advices<br>
Best Regards<br>
<span style='color:#888888'>Seb</span><o:p></o:p></p>
</div>
</div>
<p class=MsoNormal style='margin-bottom:12.0pt'>_______________________________________________<br>
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<a href="http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev" target="_blank">http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev</a><o:p></o:p></p>
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<p class=MsoNormal><o:p> </o:p></p>
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