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#include "ccompiler.h"
#include "jit.h"
int main() {
const char code[] = "extern void libc_puts(const char*);"
"struct S { int a; int b; };"
"static void init_a(struct S* s) { s->a = 1111; }"
"static void init_b(struct S* s) { s->b = 2222; }"
"void init(struct S* s) {"
"init_a(s); init_b(s);"
"libc_puts(\"libc_puts()\"); }";
auto R = cc::CCompiler().compile(code);
// Abort if compilation failed.
auto [C, M] = cantFail(std::move(R));
// M->print(llvm::errs(), nullptr);
// -- JIT compiler the IR module.
llvm::InitializeNativeTarget();
llvm::InitializeNativeTargetAsmPrinter();
auto JIT = jit::Jit::Create();
auto TSM = llvm::orc::ThreadSafeModule(std::move(M), std::move(C));
auto RT = JIT->addModule(std::move(TSM));
if (auto E = RT.takeError()) {
llvm::errs() << llvm::toString(std::move(E)) << '\n';
return 1;
}
if (auto ADDR = JIT->lookup("init")) {
std::printf("JIT ADDR 0x%lx\n", (*ADDR).getAddress());
struct S {
int a, b;
} state = {0, 0};
auto JIT_FN = (void (*)(struct S *))(*ADDR).getAddress();
std::printf("S { a=%d b=%d }\n", state.a, state.b);
JIT_FN(&state);
std::printf("S { a=%d b=%d }\n", state.a, state.b);
}
// Remove jitted code tracked by this RT.
(void)(*RT)->remove();
if (auto E = JIT->lookup("init").takeError()) {
llvm::errs() << "Expected error, we dropped removed code tracked by RT and "
"hence 'init' should be "
"removed from the JIT!\n";
}
return 0;
}
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