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<p class="MsoNormal">Hi all,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I was looking at the following function from clang/lib/AST/ASTContext.cpp:1649<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">/// getFloatTypeSemantics - Return the APFloat 'semantics' for the specified<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">/// scalar floating point type.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">const llvm::fltSemantics &ASTContext::getFloatTypeSemantics(QualType T) const {<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New""> switch (T->castAs<BuiltinType>()->getKind()) {<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New""> default:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New""> llvm_unreachable("Not a floating point type!");<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New""> case BuiltinType::Float16:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New""> case BuiltinType::Half:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New""> return Target->getHalfFormat();<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New""> case BuiltinType::Float: return Target->getFloatFormat();<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New""> case BuiltinType::Double: return Target->getDoubleFormat();<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New""> case BuiltinType::LongDouble:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New""> if (getLangOpts().OpenMP && getLangOpts().OpenMPIsDevice)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New""> return AuxTarget->getLongDoubleFormat();<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New""> return Target->getLongDoubleFormat();<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New""> case BuiltinType::Float128:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New""> if (getLangOpts().OpenMP && getLangOpts().OpenMPIsDevice)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New""> return AuxTarget->getFloat128Format();<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New""> return Target->getFloat128Format();<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New""> }<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">}<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">For long double and float128, when we are on the device we get the “semantics” for those datatypes from AuxTarget instead of Target. Why is that?<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">George<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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