[WebAssembly] Make WasmSymbol's signature usable for events (NFC)

Summary:
WasmSignature used to use its `WasmSignature` member variable only for
function types, but now it also can be used for events as well.

Reviewers: sbc100

Subscribers: dschuff, jgravelle-google, sunfish, llvm-commits

Differential Revision: https://reviews.llvm.org/D55247

llvm-svn: 348702

1 files changed, 7 insertions, 5 deletions

diff --git a/llvm/lib/Object/WasmObjectFile.cpp b/llvm/lib/Object/WasmObjectFile.cpp
index e756007fb21..895d45c470f 100644
--- a/llvm/lib/Object/WasmObjectFile.cpp
+++ b/llvm/lib/Object/WasmObjectFile.cpp
@@ -468,7 +468,7 @@ Error WasmObjectFile::parseLinkingSectionSymtab(ReadContext &Ctx) {
 
   while (Count--) {
     wasm::WasmSymbolInfo Info;
-    const wasm::WasmSignature *FunctionType = nullptr;
+    const wasm::WasmSignature *Signature = nullptr;
     const wasm::WasmGlobalType *GlobalType = nullptr;
     const wasm::WasmEventType *EventType = nullptr;
 
@@ -486,13 +486,13 @@ Error WasmObjectFile::parseLinkingSectionSymtab(ReadContext &Ctx) {
       if (IsDefined) {
         Info.Name = readString(Ctx);
         unsigned FuncIndex = Info.ElementIndex - NumImportedFunctions;
-        FunctionType = &Signatures[FunctionTypes[FuncIndex]];
+        Signature = &Signatures[FunctionTypes[FuncIndex]];
         wasm::WasmFunction &Function = Functions[FuncIndex];
         if (Function.SymbolName.empty())
           Function.SymbolName = Info.Name;
       } else {
         wasm::WasmImport &Import = *ImportedFunctions[Info.ElementIndex];
-        FunctionType = &Signatures[Import.SigIndex];
+        Signature = &Signatures[Import.SigIndex];
         Info.Name = Import.Field;
         Info.Module = Import.Module;
       }
@@ -565,6 +565,7 @@ Error WasmObjectFile::parseLinkingSectionSymtab(ReadContext &Ctx) {
         Info.Name = readString(Ctx);
         unsigned EventIndex = Info.ElementIndex - NumImportedEvents;
         wasm::WasmEvent &Event = Events[EventIndex];
+        Signature = &Signatures[Event.Type.SigIndex];
         EventType = &Event.Type;
         if (Event.SymbolName.empty())
           Event.SymbolName = Info.Name;
@@ -572,6 +573,7 @@ Error WasmObjectFile::parseLinkingSectionSymtab(ReadContext &Ctx) {
       } else {
         wasm::WasmImport &Import = *ImportedEvents[Info.ElementIndex];
         EventType = &Import.Event;
+        Signature = &Signatures[EventType->SigIndex];
         Info.Name = Import.Field;
       }
       break;
@@ -589,8 +591,8 @@ Error WasmObjectFile::parseLinkingSectionSymtab(ReadContext &Ctx) {
                                                 Twine(Info.Name),
                                             object_error::parse_failed);
     LinkingData.SymbolTable.emplace_back(Info);
-    Symbols.emplace_back(LinkingData.SymbolTable.back(), FunctionType,
-                         GlobalType, EventType);
+    Symbols.emplace_back(LinkingData.SymbolTable.back(), GlobalType, EventType,
+                         Signature);
     LLVM_DEBUG(dbgs() << "Adding symbol: " << Symbols.back() << "\n");
   }