blob: 06865a8f997fc7ae4b96ca90457fb112fdc131fb (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
|
//
// Removeds imports, and replaces them with nops. This is useful
// for running a module through the reference interpreter, which
// does not validate imports for a JS environment (by removing
// imports, we can at least get the reference interpreter to
// look at all the rest of the code).
//
#include <wasm.h>
#include <pass.h>
namespace wasm {
struct RemoveImports : public Pass {
MixedArena* allocator;
std::map<Name, Import*> importsMap;
void prepare(PassRunner* runner, Module *module) override {
allocator = runner->allocator;
importsMap = module->importsMap;
}
void visitCallImport(CallImport *curr) override {
WasmType type = importsMap[curr->target]->type.result;
if (type == none) {
replaceCurrent(allocator->alloc<Nop>());
} else {
Literal nopLiteral;
nopLiteral.type = type;
replaceCurrent(allocator->alloc<Const>()->set(nopLiteral));
}
}
void visitModule(Module *curr) {
curr->importsMap.clear();
curr->imports.clear();
}
};
static RegisterPass<RemoveImports> registerPass("remove-imports", "removes imports and replaces them with nops");
} // namespace wasm
|
