Viewing file:  test_ssi.cpp (1.29 KB) -rw-rw-r--
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/*
* phc -- the open source PHP compiler
* See doc/license/README.license for licensing information
*/
#include <AST.h>
#include <pass_manager/Optimization_pass.h>
#include <pass_manager/Plugin_pass.h>
#include <optimize/Basic_block.h>
#include <optimize/CFG.h>
#include <optimize/CFG_visitor.h>
class Test_SSI : public CFG_visitor {
public:
Test_SSI() {}
void run(CFG *cfg);
void visit_sigma_node(Branch_block *brb, SSA_name sigma_rhs);
};
/*
* Visit all basic blocks.
*/
void Test_SSI::run(CFG *cfg) {
if (debugging_enabled)
cfg->dump_graphviz(s("test-ssi"));
foreach (Basic_block *bb, *cfg->get_all_bbs_top_down())
visit_block(bb);
}
/*
* Print sigma nodes.
*/
void Test_SSI::visit_sigma_node(Branch_block *brb, SSA_name sigma_rhs) {
cout << "sigma(";
bool first = true;
foreach (SSA_name *sigma_lhs, *brb->get_sigma_args(sigma_rhs)) {
cout << (first ? "" : ", ") << sigma_lhs->get_version();
first = false;
}
cout << ") = " << sigma_rhs.str() << endl;
}
/*
* Test SSI Plugin Handler.
*/
extern "C" void load (Pass_manager* pm, Plugin_pass* pass)
{
// Insert the optimization.
// TODO: Place it right after dce.
Pass *opt = new Optimization_pass(new Test_SSI(), s("test-ssi"), s("Test SSI pass"), true, true);
pm->add_after_named_pass (opt, new String ("dce"));
}
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