8360867: CTW: Disable inline cache verification

Backport-of: aa1911191cf8c2b855268a76baf0757909d66d1b

Author: shipilev

src/hotspot/share/code/codeCache.cpp

@@ -882,6 +882,7 @@ void CodeCache::do_unloading(bool unloading_occurred) {
 
 void CodeCache::verify_clean_inline_caches() {
 #ifdef ASSERT
+  if (!VerifyInlineCaches) return;
   NMethodIterator iter(NMethodIterator::not_unloading);
   while(iter.next()) {
     nmethod* nm = iter.method();

src/hotspot/share/runtime/globals.hpp

@@ -293,6 +293,9 @@ const int ObjectAlignmentInBytes = 8;
   product(bool, UseInlineCaches, true,                                      \
           "Use Inline Caches for virtual calls ")                           \
                                                                             \
+  develop(bool, VerifyInlineCaches, true,                                   \
+          "Verify Inline Caches")                                           \
+                                                                            \
   product(bool, InlineArrayCopy, true, DIAGNOSTIC,                          \
           "Inline arraycopy native that is known to be part of "            \
           "base library DLL")                                               \

test/hotspot/jtreg/testlibrary/ctw/src/sun/hotspot/tools/ctw/CtwRunner.java

@@ -308,6 +308,8 @@ private String[] cmd(long classStart, long classStop) {
                 // Do not pay extra stack trace generation cost for normally thrown exceptions
                 "-XX:-StackTraceInThrowable",
                 "-XX:+IgnoreUnrecognizedVMOptions",
+                // Do not pay extra for verifying inline caches during nmethod cleanups
+                "-XX:-VerifyInlineCaches",
                 // Do not pay extra zapping cost for explicit GC invocations
                 "-XX:-ZapUnusedHeapArea",
                 // Stress* are c2-specific stress flags, so IgnoreUnrecognizedVMOptions is needed