[WebAssembly] Basic support for Wasm object file encoding.

With the "wasm32-unknown-unknown-wasm" triple, this allows writing out
simple wasm object files, and is another step in a larger series toward
migrating from ELF to general wasm object support. Note that this code
and the binary format itself is still experimental.

llvm-svn: 296190

1 files changed, 2 insertions, 0 deletions

diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyMachineFunctionInfo.h b/llvm/lib/Target/WebAssembly/WebAssemblyMachineFunctionInfo.h
index 756619bebbe..1fcbb7791d4 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblyMachineFunctionInfo.h
+++ b/llvm/lib/Target/WebAssembly/WebAssemblyMachineFunctionInfo.h
@@ -60,6 +60,8 @@ class WebAssemblyFunctionInfo final : public MachineFunctionInfo {
   void addResult(MVT VT) { Results.push_back(VT); }
   const std::vector<MVT> &getResults() const { return Results; }
 
+  void setNumLocals(size_t NumLocals) { Locals.resize(NumLocals, MVT::i32); }
+  void setLocal(size_t i, MVT VT) { Locals[i] = VT; }
   void addLocal(MVT VT) { Locals.push_back(VT); }
   const std::vector<MVT> &getLocals() const { return Locals; }