Author: resistor
Date: Mon Nov 5 23:26:02 2007
New Revision: 43755
URL: http://llvm.org/viewvc/llvm-project?rev=43755&view=rev
Log:
Add a few comments.
Modified:
llvm/trunk/lib/CodeGen/StrongPHIElimination.cpp
Modified: llvm/trunk/lib/CodeGen/StrongPHIElimination.cpp
URL:
http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/StrongPHIElimination.cpp?rev=43755&r1=43754&r2=43755&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/StrongPHIElimination.cpp (original)
+++ llvm/trunk/lib/CodeGen/StrongPHIElimination.cpp Mon Nov 5 23:26:02 2007
@@ -146,6 +146,8 @@
}
}
+/// PreorderSorter - a helper class that is used to sort registers
+/// according to the preorder number of their defining blocks
class PreorderSorter {
private:
DenseMap<MachineBasicBlock*, unsigned>& preorder;
@@ -172,6 +174,8 @@
}
};
+/// computeDomForest - compute the subforest of the DomTree corresponding
+/// to the defining blocks of the registers in question
std::vector<StrongPHIElimination::DomForestNode*>
StrongPHIElimination::computeDomForest(std::set<unsigned>& regs) {
LiveVariables& LV = getAnalysis<LiveVariables>();
@@ -215,6 +219,7 @@
return ret;
}
+/// processPHI - Eliminate the given PHI node
void StrongPHIElimination::processPHI(MachineInstr* P) {
}
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