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llvm-svn: 59072
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Chris Lattner 2008-11-11 19:36:31 +00:00
parent b3ecdedbe0
commit 1bccc6695d
1 changed files with 7 additions and 7 deletions
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docs/WritingAnLLVMBackend.html
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@ -742,8 +742,8 @@ IntRegsClass::IntRegsClass() : TargetRegisterClass(IntRegsRegClassID,
</div>
<!-- ======================================================================= -->
<div class="doc_subsection">
<a name="implementRegister">Implement a subclass of
<a href="http://www.llvm.org/docs/CodeGenerator.html#targetregisterinfo">TargetRegisterInfo</a></a>
<a name="implementRegister">Implement a subclass of</a>
<a href="http://www.llvm.org/docs/CodeGenerator.html#targetregisterinfo">TargetRegisterInfo</a>
</div>
<div class="doc_text">
<p>The final step is to hand code portions of XXXRegisterInfo, which
@ -998,8 +998,8 @@ be taken to ensure the values in <tt>Sparc.h</tt> correspond to the values in
<!-- ======================================================================= -->
<div class="doc_subsection">
<a name="implementInstr">Implement a subclass of
<a href="http://www.llvm.org/docs/CodeGenerator.html#targetinstrinfo">TargetInstrInfo</a></a>
<a name="implementInstr">Implement a subclass of </a>
<a href="http://www.llvm.org/docs/CodeGenerator.html#targetinstrinfo">TargetInstrInfo</a>
</div>
<div class="doc_text">
@ -1339,7 +1339,7 @@ addRegisterClass(MVT::f64, SP::DFPRegsRegisterClass);
<p>You should examine the node types in the ISD namespace
(<tt>include/llvm/CodeGen/SelectionDAGNodes.h</tt>)
and determine which operations the target natively supports. For operations
that do <u>not</u> have native support, add a callback to the constructor for
that do <b>not</b> have native support, add a callback to the constructor for
the XXXTargetLowering class, so the instruction selection process knows what to
do. The TargetLowering class callback methods (declared in
<tt>llvm/Target/TargetLowering.h</tt>) are:</p>
@ -1465,7 +1465,7 @@ assert(Op.getValueType() == MVT::i32);
</div>
<div class="doc_text">
<p>The <tt>Legal</tt> LegalizeAction enum value simply indicates that an
operation <u>is</u> natively supported. <tt>Legal</tt> represents the default condition,
operation <b>is</b> natively supported. <tt>Legal</tt> represents the default condition,
so it is rarely used. In <tt>SparcISelLowering.cpp</tt>, the action for CTPOP (an
operation to count the bits set in an integer) is natively supported only for
SPARC v9. The following code enables the <tt>Expand</tt> conversion technique for non-v9
@ -2067,7 +2067,7 @@ implemented with assembler. </p>
<a href="http://jigsaw.w3.org/css-validator/check/referer"><img
src="http://jigsaw.w3.org/css-validator/images/vcss" alt="Valid CSS!"></a>
<a href="http://validator.w3.org/check/referer"><img
src="http://www.w3.org/Icons/valid-html401" alt="Valid HTML 4.01!" /></a>
src="http://www.w3.org/Icons/valid-html401" alt="Valid HTML 4.01!"></a>
<a href="http://www.woo.com">Mason Woo</a> and <a href="http://misha.brukman.net">Misha Brukman</a><br>
<a href="http://llvm.org">The LLVM Compiler Infrastructure</a>