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<div style="direction:ltr; font-family:Tahoma; color:#000000; font-size:10pt">Jia,<br>
<br>
Try this in : lib/Basic/Targets.cpp ~line 4390 <br>
<br>
virtual bool validateAsmConstraint(const char *&Name,<br>
TargetInfo::ConstraintInfo &Info) const {<br>
switch (*Name) {<br>
default:<br>
return false;<br>
<br>
case 'r': // CPU registers.<br>
case 'd': // Equivalent to "r" unless generating MIPS16 code.<br>
case 'y': // Equivalent to "r", backwards compatibility only.<br>
case 'f': // floating-point registers.<br>
case 'c': // $25 for indirect jumps<br>
case 'l': // lo register<br>
case 'x': // hilo register pair<br>
Info.setAllowsRegister();<br>
return true;<br>
case 'R': // An address tha can be sued in a non-macro load or store<br>
Info.setAllowsMemory();<br>
return true;<br>
}<br>
<br>
Jack<br>
<br>
On 02/28/2013 08:12 AM, Jia Liu wrote:> Hi all,<br>
> <br>
> I find clang-mips doesn't support constraint 'R' and I'm trying make<br>
> LLVM/Clang support it.<br>
> I did a little job, but Clang can not generate right code, it use the<br>
> same register in inline asm,<br>
> and the binary will segment fault in MIPS environment.<br>
> <br>
<br>
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