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Update prune-clones.cc #35

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58 changes: 33 additions & 25 deletions gcc/prune-clones.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -3,58 +3,66 @@
#include "ipa-ref.h"
#include "ipa-param-manipulation.h"
#include "cgraph.h"
#include "gcc-plugin.h"
#include "plugin-version.h"
#include "tree-pass.h"
#include "context.h"
#include "prune-clones.h"

unsigned int prune_clones(cgraph_node *node);

// Constructor definition for pass_prune_clones
pass_prune_clones::pass_prune_clones(gcc::context *ctxt)
: gimple_opt_pass(pass_data_prune_clones, ctxt) {}

unsigned int pass_prune_clones::execute(function *fun) {
for (cgraph_node *node = cgraph_nodes; node; node = node->next) {
if (node->simd_clone) {
printf("Found SIMD clones for function: %s\n", cgraph_node_name(node));
prune_clones(node);
}
}
return 0;
}

namespace {
// Define the pass data structure
const pass_data pass_data_prune_clones = {
GIMPLE_PASS, // type
"prune_clones", // name
OPTGROUP_NONE, // optinfo_flags
TV_NONE, // tv_id
0, // properties_required
PROP_gimple_any, // PROP_gimple
0, // properties_provided
0, // properties_destroyed
0, // todo_flags_start
0 // todo_flags_finish
};

// Define the pass class
class pass_prune_clones : public gimple_opt_pass {
public:
pass_prune_clones(gcc::context *ctxt)
: gimple_opt_pass(pass_data_prune_clones, ctxt) {}

unsigned int execute(function *fun) final override;
};

// Execute function for the pass
unsigned int pass_prune_clones::execute(function *fun) {
// Walk each function in the call graph
FOR_EACH_FUNCTION(node) {
// If node points to SIMD clones
if (node->simd_clones) {
prune_clones(node);
}
}
return 0;
gimple_opt_pass *make_pass_prune_clones(gcc::context *ctxt) {
return new pass_prune_clones(ctxt);
}
} // namespace

// Function to prune duplicate clones
unsigned int prune_clones(cgraph_node *node) {
printf("Pruning clones for function: %s\n", cgraph_node_name(node));
cgraph_function_version_info *default_fvi = node->function_version();
cgraph_function_version_info *curr_fvi = node->function_version();
cgraph_function_version_info *prev_fvi = nullptr;

while (curr_fvi->next) {
prev_fvi = curr_fvi;
// Get the next clone
curr_fvi = curr_fvi->next;
// Compare to the default node
// Prune if duplicate
if(curr_fvi->clone_of == default_fvi->clone_of) {
printf("Removing duplicate clone: %s\n", cgraph_node_name(curr_fvi->clone_of));
prev_fvi->next = curr_fvi->next;
delete curr_fvi;
}
}

return 0;
}

// Function to create a new instance of the gimple_opt_pass
gimple_opt_pass *make_pass_prune_clones(gcc::context *ctxt) {
return new pass_prune_clones(ctxt);
}