[WebAssembly] Add pass to infer prototypes for prototype-less functions

See https://bugs.llvm.org/show_bug.cgi?id=35385

Differential Revision: https://reviews.llvm.org/D48471

llvm-svn: 336759

1 files changed, 4 insertions, 0 deletions

diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyTargetMachine.cpp b/llvm/lib/Target/WebAssembly/WebAssemblyTargetMachine.cpp
index 02810d71b70..9a5f459e9dd 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblyTargetMachine.cpp
+++ b/llvm/lib/Target/WebAssembly/WebAssemblyTargetMachine.cpp
@@ -51,6 +51,7 @@ extern "C" void LLVMInitializeWebAssemblyTarget() {
 
   // Register backend passes
   auto &PR = *PassRegistry::getPassRegistry();
+  initializeWebAssemblyAddMissingPrototypesPass(PR);
   initializeWebAssemblyLowerEmscriptenEHSjLjPass(PR);
   initializeLowerGlobalDtorsPass(PR);
   initializeFixFunctionBitcastsPass(PR);
@@ -214,6 +215,9 @@ void WebAssemblyPassConfig::addIRPasses() {
     addPass(createAtomicExpandPass());
   }
 
+  // Add signatures to prototype-less function declarations
+  addPass(createWebAssemblyAddMissingPrototypes());
+
   // Lower .llvm.global_dtors into .llvm_global_ctors with __cxa_atexit calls.
   addPass(createWebAssemblyLowerGlobalDtors());