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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59072 91177308-0d34-0410-b5e6-96231b3b80d8
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Chris Lattner
2008-11-11 19:36:31 +00:00
parent 17ddcd99dd
commit 7d12b4b510
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>
<!-- ======================================================================= --> <!-- ======================================================================= -->
<div class="doc_subsection"> <div class="doc_subsection">
<a name="implementRegister">Implement a subclass of <a name="implementRegister">Implement a subclass of</a>
<a href="http://www.llvm.org/docs/CodeGenerator.html#targetregisterinfo">TargetRegisterInfo</a></a> <a href="http://www.llvm.org/docs/CodeGenerator.html#targetregisterinfo">TargetRegisterInfo</a>
</div> </div>
<div class="doc_text"> <div class="doc_text">
<p>The final step is to hand code portions of XXXRegisterInfo, which <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"> <div class="doc_subsection">
<a name="implementInstr">Implement a subclass of <a name="implementInstr">Implement a subclass of </a>
<a href="http://www.llvm.org/docs/CodeGenerator.html#targetinstrinfo">TargetInstrInfo</a></a> <a href="http://www.llvm.org/docs/CodeGenerator.html#targetinstrinfo">TargetInstrInfo</a>
</div> </div>
<div class="doc_text"> <div class="doc_text">
@@ -1339,7 +1339,7 @@ addRegisterClass(MVT::f64, SP::DFPRegsRegisterClass);
<p>You should examine the node types in the ISD namespace <p>You should examine the node types in the ISD namespace
(<tt>include/llvm/CodeGen/SelectionDAGNodes.h</tt>) (<tt>include/llvm/CodeGen/SelectionDAGNodes.h</tt>)
and determine which operations the target natively supports. For operations 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 the XXXTargetLowering class, so the instruction selection process knows what to
do. The TargetLowering class callback methods (declared in do. The TargetLowering class callback methods (declared in
<tt>llvm/Target/TargetLowering.h</tt>) are:</p> <tt>llvm/Target/TargetLowering.h</tt>) are:</p>
@@ -1465,7 +1465,7 @@ assert(Op.getValueType() == MVT::i32);
</div> </div>
<div class="doc_text"> <div class="doc_text">
<p>The <tt>Legal</tt> LegalizeAction enum value simply indicates that an <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 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 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 SPARC v9. The following code enables the <tt>Expand</tt> conversion technique for non-v9
@@ -2067,7 +2067,7 @@ implemented with assembler. </p>
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