restored important libgraal invariant check

Author: dougxc

compiler/src/jdk.graal.compiler/src/jdk/graal/compiler/hotspot/HotSpotReplacementsImpl.java

@@ -274,6 +274,13 @@ public <T> T getInjectedArgument(Class<T> capability) {
         return super.getInjectedArgument(capability);
     }
 
+    public ResolvedJavaMethod findSnippetMethod(ResolvedJavaMethod thisMethod) {
+        if (snippetEncoder == null) {
+            throw new GraalError("findSnippetMethod called before initialization of Replacements");
+        }
+        return snippetEncoder.findSnippetMethod(thisMethod);
+    }
+
     public static MetaAccessProvider noticeTypes(MetaAccessProvider metaAccess) {
         if (inImageBuildtimeCode()) {
             return SymbolicSnippetEncoder.noticeTypes(metaAccess);

compiler/src/jdk.graal.compiler/src/jdk/graal/compiler/hotspot/stubs/AbstractForeignCallStub.java

@@ -50,6 +50,7 @@
 import jdk.graal.compiler.options.OptionValues;
 import jdk.graal.compiler.replacements.GraphKit;
 import jdk.graal.compiler.replacements.nodes.ReadRegisterNode;
+import jdk.graal.compiler.serviceprovider.GraalServices;
 import jdk.vm.ci.hotspot.HotSpotJVMCIRuntime;
 import jdk.vm.ci.hotspot.HotSpotSignature;
 import jdk.vm.ci.meta.JavaMethod;
@@ -275,6 +276,10 @@ private ResolvedJavaMethod getGraphMethod() {
         if (thisMethod == null) {
             throw new InternalError("Can't find " + getClass().getSimpleName() + ".getGraph");
         }
+        if (GraalServices.isBuildingLibgraal()) {
+            HotSpotReplacementsImpl replacements = (HotSpotReplacementsImpl) providers.getReplacements();
+            replacements.findSnippetMethod(thisMethod);
+        }
         return thisMethod;
     }