mirror of
https://github.com/revng/revng
synced 2026-06-21 14:07:57 +00:00
Alessandro Di Federico
bd09716534
The `FunctionCallIdentification` analysis now provides a custom view on the CFG where 1) dispatcher-related basic blocks are absent, 2) nodes performing functions calls have an edge to their return address and 3) nodes ending with a return instruction have no successor. This CFG is now employed by the reaching definitions analysis and OSRA. Additionally, the implementation of the `visitSuccessors` and `visitPredecessors` method has been reviewed. It now consists in a class that needs to be inherited and for which two methods should be implemented, one to perform the visit of a block and another one to enumerate the successors. In addition, all the users of `visitSuccessors`/`visitPredecessors` have been updated, a simple set of tests has been introduced and `GeneratedCodeBasicInfo::visitPredecessors` has been dropped.
100 lines
2.2 KiB
C++
100 lines
2.2 KiB
C++
/// \file IRHelpers.cpp
|
|
/// \brief Tests for IRHelpers
|
|
|
|
//
|
|
// This file is distributed under the MIT License. See LICENSE.md for details.
|
|
//
|
|
|
|
// Boost includes
|
|
#define BOOST_TEST_MODULE IRHelpers
|
|
bool init_unit_test();
|
|
#include <boost/test/unit_test.hpp>
|
|
|
|
// Local libraries includes
|
|
#include "revng/Support/IRHelpers.h"
|
|
|
|
// Local includes
|
|
#include "LLVMTestHelpers.h"
|
|
|
|
using namespace llvm;
|
|
|
|
const char *VisitorTestBody = R"LLVM(
|
|
%a = add i64 0, 0
|
|
br i1 true, label %first_if_true, label %first_if_false
|
|
|
|
first_if_true:
|
|
%b = add i64 0, 0
|
|
br label %center
|
|
|
|
first_if_false:
|
|
%c = add i64 0, 0
|
|
br label %center
|
|
|
|
center:
|
|
%d = add i64 0, 0
|
|
%target = add i64 0, 0
|
|
br i1 true, label %second_if_true, label %second_if_false
|
|
|
|
second_if_true:
|
|
%e = add i64 0, 0
|
|
br label %end
|
|
|
|
second_if_false:
|
|
%f = add i64 0, 0
|
|
br label %end
|
|
|
|
end:
|
|
%g = add i64 0, 0
|
|
ret void
|
|
)LLVM";
|
|
|
|
BOOST_AUTO_TEST_CASE(TestBackwardBFSVisitor) {
|
|
|
|
struct Visitor : public BackwardBFSVisitor<Visitor> {
|
|
std::vector<std::string> VisitLog;
|
|
|
|
VisitAction visit(instruction_range Range) {
|
|
for (Instruction &I : Range)
|
|
VisitLog.push_back(getName(&I));
|
|
return Continue;
|
|
}
|
|
};
|
|
|
|
LLVMContext TestContext;
|
|
std::unique_ptr<Module> M = loadModule(TestContext, VisitorTestBody);
|
|
Function *F = M->getFunction("main");
|
|
|
|
Visitor V;
|
|
V.run(instructionByName(F, "target"));
|
|
|
|
const std::vector<std::string> GroundTruth = {
|
|
"d", "first_if_false:2", "c", "first_if_true:2", "b", "initial_block:2", "a"
|
|
};
|
|
revng_assert(V.VisitLog == GroundTruth);
|
|
}
|
|
|
|
BOOST_AUTO_TEST_CASE(TestForwardBFSVisitor) {
|
|
|
|
struct Visitor : public ForwardBFSVisitor<Visitor> {
|
|
std::vector<std::string> VisitLog;
|
|
|
|
VisitAction visit(instruction_range Range) {
|
|
for (Instruction &I : Range)
|
|
VisitLog.push_back(getName(&I));
|
|
return Continue;
|
|
}
|
|
};
|
|
|
|
LLVMContext TestContext;
|
|
std::unique_ptr<Module> M = loadModule(TestContext, VisitorTestBody);
|
|
Function *F = M->getFunction("main");
|
|
|
|
Visitor V;
|
|
V.run(instructionByName(F, "target"));
|
|
|
|
const std::vector<std::string> GroundTruth = {
|
|
"center:3", "e", "second_if_true:2", "f", "second_if_false:2", "g", "end:2"
|
|
};
|
|
revng_assert(V.VisitLog == GroundTruth);
|
|
}
|