RFR: 8271203: C2: assert(iff->Opcode() == Op_If || iff->Opcode() == Op_CountedLoopEnd || iff->Opcode() == Op_RangeCheck) failed: Check this code when new subtype is added

[Yi Yang]

On Fri, 30 Jul 2021 10:05:15 GMT, Tobias Hartmann <thartmann at openjdk.org> wrote:

>> test/hotspot/jtreg/compiler/c2/UnswitchingLongCountedLoop.java line 30:
>> 
>>> 28:  * @summary C2: assert(iff->Opcode() == Op_If || iff->Opcode() == Op_CountedLoopEnd || iff->Opcode() == Op_RangeCheck) failed: Check this code when new subtype is added
>>> 29:  * @library /test/lib
>>> 30:  * @run main/othervm -Xbatch -XX:-TieredCompilation -XX:CompileOnly=UnswitchingLongCountedLoop compiler.c2.UnswitchingLongCountedLoop
>> 
>> Isn't that CompileOnly statement missing the package name or a wildcard?
>
> And `@library /test/lib` is not needed.

Hi Tobias, I've removed `@library /test/lib`, also according to  @chhagedorn 's analysis, I think `LongCountedLoopAsUnswitchIff` should be a better test name.

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PR: https://git.openjdk.java.net/jdk/pull/4920