1 files changed, 6 insertions, 0 deletions

diff --git a/contrib/llvm/lib/Target/WebAssembly/WebAssemblyMachineFunctionInfo.cpp b/contrib/llvm/lib/Target/WebAssembly/WebAssemblyMachineFunctionInfo.cpp
index 542d984b9006..225c5d32cb5d 100644
--- a/contrib/llvm/lib/Target/WebAssembly/WebAssemblyMachineFunctionInfo.cpp
+++ b/contrib/llvm/lib/Target/WebAssembly/WebAssemblyMachineFunctionInfo.cpp
@@ -17,3 +17,9 @@
 using namespace llvm;
 
 WebAssemblyFunctionInfo::~WebAssemblyFunctionInfo() {}
+
+void WebAssemblyFunctionInfo::initWARegs() {
+  assert(WARegs.empty());
+  unsigned Reg = UnusedReg;
+  WARegs.resize(MF.getRegInfo().getNumVirtRegs(), Reg);
+}