[GR-60743] More documentation in code generated by IntrinsicStubProcessor.

PullRequest: graal/20371

Author: djoooooe

compiler/src/jdk.graal.compiler.processor/src/jdk/graal/compiler/lir/processor/IntrinsicStubProcessor.java

@@ -325,6 +325,7 @@ private void createStubs(AbstractProcessor processor, TargetVM targetVM, TypeEle
                     }
                 }
                 out.printf("\n");
+                out.println("// generated by: IntrinsicStubProcessor");
                 out.printf("public class %s ", genClassName);
                 if (targetVM == TargetVM.hotspot) {
                     out.printf("extends SnippetStub ");
@@ -409,6 +410,10 @@ private void createStubs(AbstractProcessor processor, TargetVM targetVM, TypeEle
 
     private void generateStub(TargetVM targetVM, PrintWriter out, Name className, String methodName, List<String> params, ExecutableElement m, String runtimeCheckedFeatures,
                     int runtimeCheckedFeaturesParameterIndex) {
+        out.printf("    // method: %s.%s\n", className, removePackageNames(m.toString()));
+        if (runtimeCheckedFeatures != null) {
+            out.println("    // runtime-checked CPU features variant, i.e. variant compiled with CPU features not present in the feature set selected by the -march option");
+        }
         switch (targetVM) {
             case hotspot:
                 out.printf("    @Snippet\n");
@@ -455,4 +460,26 @@ private void generateStub(TargetVM targetVM, PrintWriter out, Name className, St
         out.printf("    }\n");
         out.printf("\n");
     }
+
+    private static String removePackageNames(String signature) {
+        StringBuilder sb = new StringBuilder(signature.length());
+        int i = signature.indexOf('(') + 1;
+        assert i > 0;
+        sb.append(signature, 0, i);
+        while (i < signature.length()) {
+            int end = signature.indexOf(',', i);
+            if (end < 0) {
+                end = signature.length() - 1;
+            }
+            int start = signature.lastIndexOf('.', end);
+            if (start < i) {
+                start = i;
+            } else {
+                start++;
+            }
+            i = end + 1;
+            sb.append(signature, start, i);
+        }
+        return sb.toString();
+    }
 }

truffle/src/com.oracle.truffle.api.strings/src/com/oracle/truffle/api/strings/TruffleString.java

@@ -7302,11 +7302,11 @@ abstract static class InternalSwitchEncodingNode extends AbstractInternalNode {
         @Specialization
         static TruffleString immutable(Node node, TruffleString a, Encoding targetEncoding, TranscodingErrorHandler errorHandler,
                         @Cached TStringInternalNodes.GetPreciseCodeRangeWithMaterializationNode getPreciseCodeRangeNode,
-                        @Cached InlinedConditionProfile isCompatibleProfile,
-                        @Cached InlinedConditionProfile noOpProfile,
-                        @Cached InlinedConditionProfile mustCompactProfile,
-                        @Cached InlinedConditionProfile compact10Profile,
-                        @Cached InlinedConditionProfile compact20Profile,
+                        @Cached @Exclusive InlinedConditionProfile isCompatibleProfile,
+                        @Cached @Exclusive InlinedConditionProfile noOpProfile,
+                        @Cached @Exclusive InlinedConditionProfile mustCompactProfile,
+                        @Cached @Exclusive InlinedConditionProfile compact10Profile,
+                        @Cached @Exclusive InlinedConditionProfile compact20Profile,
                         @Cached @Exclusive InlinedConditionProfile cacheHit,
                         @Cached @Exclusive InlinedConditionProfile managedProfileA,
                         @Cached @Exclusive InlinedConditionProfile nativeProfileA,