[jdk11u-dev] RFR: 8139046: Compiler Control: IGVPrintLevel directive should set PrintIdealGraph

[Martin Doerr]

On Fri, 20 May 2022 12:56:12 GMT, Martin Doerr <mdoerr at openjdk.org> wrote:

> Backport of [JDK-8139046](https://bugs.openjdk.java.net/browse/JDK-8139046)
> Enables dumping of C2 intermediate representation for a selected method: `-XX:PrintIdealGraphFile=igv.xml -XX:CompileCommand=option,TestKlass::testMethod,intx,IGVPrintLevel,3`
> Doesn't apply cleanly:
> 
> - compile.hpp: Had to take `should_print` from https://github.com/openjdk/jdk/commit/75e9d0a2901c149fc0acf3ed042ddedc689d8d23
> - compilerDefinitions.cpp, compile.cpp, idealGraphPrinter.cpp, idealGraphPrinter.hpp: Had to do resolve hunks manually.

Thanks for the review! We want to use it for debugging C2 crashes. Some problems don't reproduce with later JDK releases. That's why we need this fix in 11u.

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

PR: https://git.openjdk.java.net/jdk11u-dev/pull/1102