Temporary disable frame read optimization (GR-64654).

Author: chumer

compiler/src/jdk.graal.compiler.test/src/jdk/graal/compiler/truffle/test/FrameHostReadsTest.java

@@ -109,7 +109,7 @@ public void testStaticReads() throws IOException, InterruptedException {
                 Assert.assertEquals(1, arrayLengthReads);
                 Assert.assertEquals(0, otherReads);
             });
-        }).disableAssertions(FrameWithoutBoxing.class).run();
+        }).disableAssertions(FrameWithoutBoxing.class).postfixVmOption("-Djdk.graal.TruffleTrustedFinalFrameFields=true").run();
     }
 
     public static int snippetReadsWritesWithoutZeroExtend(FrameWithoutBoxing frame, int index) {
@@ -138,7 +138,7 @@ public void testReadsWritesWithoutZeroExtend() throws IOException, InterruptedEx
                 }
                 Assert.assertEquals(2, writeCount);
             });
-        }).disableAssertions(FrameWithoutBoxing.class).run();
+        }).disableAssertions(FrameWithoutBoxing.class).postfixVmOption("-Djdk.graal.TruffleTrustedFinalFrameFields=true").run();
     }
 
     private void compileAndCheck(String snippet, Consumer<StructuredGraph> check) {

compiler/src/jdk.graal.compiler/src/jdk/graal/compiler/truffle/substitutions/TruffleGraphBuilderPlugins.java

@@ -151,7 +151,7 @@ public static class Options {
         @Option(help = "Whether Truffle trusted type casts are enabled.", type = OptionType.Debug) //
         public static final OptionKey<Boolean> TruffleTrustedTypeCast = new OptionKey<>(true);
         @Option(help = "Whether Truffle frame field reads are trusted final.", type = OptionType.Debug) //
-        public static final OptionKey<Boolean> TruffleTrustedFinalFrameFields = new OptionKey<>(true);
+        public static final OptionKey<Boolean> TruffleTrustedFinalFrameFields = new OptionKey<>(false);
 
     }