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Diffstat (limited to 'docs/ProgrammersManual.html')
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1 files changed, 13 insertions, 13 deletions
diff --git a/docs/ProgrammersManual.html b/docs/ProgrammersManual.html index d51d958df0..36e5920068 100644 --- a/docs/ProgrammersManual.html +++ b/docs/ProgrammersManual.html @@ -383,11 +383,11 @@ more complex example </h4><ul> Say that you're writing a FunctionPass and would like to count all the locations in the entire module (that is, across every -<tt>Function</tt>) where a certain function (i.e. <tt>Function</tt>*) -passed into the FunctionPass constructor. As you'll learn later, you -may want to use an <tt>InstVisitor</tt> to accomplish this in a much -more straightforward manner, but this example will allow us to explore -how you'd do it if you didn't have <tt>InstVisitor</tt> around. In +<tt>Function</tt>) where a certain function (i.e. some +<tt>Function</tt>*) already in scope. As you'll learn later, you may +want to use an <tt>InstVisitor</tt> to accomplish this in a much more +straightforward manner, but this example will allow us to explore how +you'd do it if you didn't have <tt>InstVisitor</tt> around. In pseudocode, this is what we want to do: <pre> @@ -400,15 +400,16 @@ for each Function f in the Module </pre> And the actual code is (remember, since we're writing a -<tt>FunctionPass</tt> our <tt>FunctionPass</tt>-derived class simply +<tt>FunctionPass</tt>, our <tt>FunctionPass</tt>-derived class simply has to override the <tt>runOnFunction</tt> method...): <pre> + +Function* targetFunc = ...; + class OurFunctionPass : public FunctionPass { public: - OurFunctionPass(Function* func): m_func(func) { } - - virtual doInitialization(Module& M) { callCounter = 0; }; + OurFunctionPass(): callCounter(0) { } virtual runOnFunction(Function& F) { for(Function::iterator b = F.begin(), be = F.end(); b != be; ++b) { @@ -418,15 +419,14 @@ class OurFunctionPass : public FunctionPass { // need to determine if it's a call to the // function pointed to by m_func or not. - if(callInst->getCalledFunction() == m_func) + if(callInst->getCalledFunction() == targetFunc) ++callCounter; } } } private: - Function* m_func; // we're counting calls to this function. - static unsigned callCounter; + unsigned callCounter; }; </pre> @@ -1280,6 +1280,6 @@ pointer to the parent Function. <a href="mailto:sabre@nondot.org">Chris Lattner</a></address> <!-- Created: Tue Aug 6 15:00:33 CDT 2002 --> <!-- hhmts start --> -Last modified: Mon Sep 9 10:47:48 CDT 2002 +Last modified: Mon Sep 9 11:29:35 CDT 2002 <!-- hhmts end --> </font></body></html> |