RFR: 8316197: Make tracing of inline cache available in unified logging

[Vladimir Kozlov]

On Thu, 7 Dec 2023 23:07:21 GMT, Yi-Fan Tsai <duke at openjdk.org> wrote:

> This removes develop flag `TraceICs` and makes the logs available via `-Xlog`.
> 
> Example:
> 
> % java -Xlog:inlinecache=trace -version
> [0.061s][trace][inlinecache] CompiledDirectStaticCall at 0x00007f3739001d17: set_to_interpreted java.lang.StringLatin1.hashCode([B)I
> [0.078s][trace][inlinecache] IC at 0x00007f3739004a87: monomorphic to compiled (rcvr klass = nullptr)
> [0.079s][trace][inlinecache] CompiledDirectStaticCall at 0x00007f3739005dff: set_to_interpreted jdk.internal.util.ArraysSupport.vectorizedHashCode(Ljava/lang/Object;IIII)I
> [0.079s][trace][inlinecache] CompiledDirectStaticCall at 0x00007f373900502f: set_to_interpreted jdk.internal.org.objectweb.asm.ByteVector.enlarge(I)V
> [0.079s][trace][inlinecache] IC at 0x00007f373900502f: monomorphic to interpreter: {method} {0x00007f36f03e6318} 'enlarge' '(I)V' in 'jdk/internal/org/objectweb/asm/ByteVector'
> [0.079s][trace][inlinecache] CompiledDirectStaticCall at 0x00007f3739006b0f: set_to_compiled 0x00007f3739002120
> [0.083s][trace][inlinecache] CompiledDirectStaticCall at 0x00007f373900928f: set_to_interpreted java.lang.AbstractStringBuilder.newCapacity(I)I
> [0.083s][trace][inlinecache] IC at 0x00007f373900928f: monomorphic to interpreter: {method} {0x00007f36f00cd170} 'newCapacity' '(I)I' in 'java/lang/AbstractStringBuilder'
> ...

You missed `compiler/arguments/TestTraceICs.java` test.

-------------

Changes requested by kvn (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/17026#pullrequestreview-1772915213