8049532: LogCompilation: C1: inlining tree is flat (no depth is stored)

Reviewed-by: roland, iveresov

src/share/tools/LogCompilation/src/com/sun/hotspot/tools/compiler/LogParser.java

@@ -406,9 +406,17 @@ public class LogParser extends DefaultHandler implements ErrorHandler, Constants
                 } else if (scopes.peek().getCalls().size() > 2 && m == scopes.peek().last(-2).getMethod()) {
                     scopes.push(scopes.peek().last(-2));
                 } else {
-                    System.out.println(site.getMethod());
-                    System.out.println(m);
-                    throw new InternalError("call site and parse don't match");
+                    // C1 prints multiple method tags during inlining when it narrows method being inlinied.
+                    // Example:
+                    //   ...
+                    //   <method id="813" holder="694" name="toString" return="695" flags="1" bytes="36" iicount="1"/>
+                    //   <call method="813" instr="invokevirtual"/>
+                    //   <inline_success reason="receiver is statically known"/>
+                    //   <method id="814" holder="792" name="toString" return="695" flags="1" bytes="5" iicount="3"/>
+                    //   <parse method="814">
+                    //   ...
+                    site.setMethod(m);
+                    scopes.push(site);
                 }
             }
         } else if (qname.equals("parse_done")) {

src/share/vm/c1/c1_GraphBuilder.cpp

@@ -3960,10 +3960,15 @@ bool GraphBuilder::try_inline_full(ciMethod* callee, bool holder_known, Bytecode
   // Clear out bytecode stream
   scope_data()->set_stream(NULL);
 
+  CompileLog* log = compilation()->log();
+  if (log != NULL) log->head("parse method='%d'", log->identify(callee));
+
   // Ready to resume parsing in callee (either in the same block we
   // were in before or in the callee's start block)
   iterate_all_blocks(callee_start_block == NULL);
 
+  if (log != NULL) log->done("parse");
+
   // If we bailed out during parsing, return immediately (this is bad news)
   if (bailed_out())
       return false;