[WebAssembly] replaced .param/.result by .functype

Summary:
This makes it easier/cleaner to generate a single signature from
this directive. Also:
- Adds the symbol name, such that we don't depend on the location
  of this directive anymore.
- Actually constructs the signature in the assembler, and make the
  assembler own it.
- Refactor the use of MVT vs ValType in the streamer and assembler
  to require less conversions overall.
- Changed 700 or so tests to use it.

Reviewers: sbc100, dschuff

Subscribers: jgravelle-google, eraman, aheejin, sunfish, jfb, llvm-commits

Differential Revision: https://reviews.llvm.org/D54652

llvm-svn: 347228

1 files changed, 3 insertions, 0 deletions

diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyMachineFunctionInfo.h b/llvm/lib/Target/WebAssembly/WebAssemblyMachineFunctionInfo.h
index cde44d24599..4be4beb85d0 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblyMachineFunctionInfo.h
+++ b/llvm/lib/Target/WebAssembly/WebAssemblyMachineFunctionInfo.h
@@ -129,6 +129,9 @@ void ComputeSignatureVTs(const FunctionType *Ty, const Function &F,
                          const TargetMachine &TM, SmallVectorImpl<MVT> &Params,
                          SmallVectorImpl<MVT> &Results);
 
+void ValTypesFromMVTs(const ArrayRef<MVT> &In,
+                      SmallVectorImpl<wasm::ValType> &Out);
+
 std::unique_ptr<wasm::WasmSignature>
 SignatureFromMVTs(const SmallVectorImpl<MVT> &Results,
                   const SmallVectorImpl<MVT> &Params);