Add missing Truffle Safepoint poll in Wasm interpreter loop.

(cherry picked from commit 7a6e19a38d8ab0f12a605aab6411438b6fd47e7c)

Author: woess

wasm/src/org.graalvm.wasm/src/org/graalvm/wasm/nodes/WasmFunctionNode.java

@@ -96,6 +96,7 @@
 import com.oracle.truffle.api.ExactMath;
 import com.oracle.truffle.api.HostCompilerDirectives.BytecodeInterpreterSwitch;
 import com.oracle.truffle.api.TruffleContext;
+import com.oracle.truffle.api.TruffleSafepoint;
 import com.oracle.truffle.api.frame.Frame;
 import com.oracle.truffle.api.frame.VirtualFrame;
 import com.oracle.truffle.api.nodes.BytecodeOSRNode;
@@ -370,6 +371,7 @@ public Object executeBodyFromOffset(WasmContext context, WasmInstance instance,
                     break;
                 }
                 case Bytecode.LOOP: {
+                    TruffleSafepoint.poll(this);
                     if (CompilerDirectives.hasNextTier() && ++backEdgeCounter.count >= REPORT_LOOP_STRIDE) {
                         LoopNode.reportLoopCount(this, REPORT_LOOP_STRIDE);
                         backEdgeCounter.count = 0;