RFR: JDK-8287061: Support for rematerializing scalar replaced objects participating in allocation merges [v8]

[Cesar Soares Lucas]

On Sat, 15 Apr 2023 00:17:55 GMT, Vladimir Kozlov <kvn at openjdk.org> wrote:

>> Cesar Soares Lucas has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Address PR review 3. Some comments and be able to abort compilation.
>
> New test failed in tier1 on all platforms. Here is list:
> 
> 1) Method "int compiler.c2.irTests.scalarReplacement.AllocationMergesTests.TestTrapAfterMerge(boolean,int,int)" - [Failed IR rules: 1]:
> 2) Method "int compiler.c2.irTests.scalarReplacement.AllocationMergesTests.testCondLoadAfterMerge(boolean,boolean,int,int)" - [Failed IR rules: 1]:
> 3) Method "int compiler.c2.irTests.scalarReplacement.AllocationMergesTests.testLoadInCondAfterMerge(boolean,int,int)" - [Failed IR rules: 1]:
> 4) Method "int compiler.c2.irTests.scalarReplacement.AllocationMergesTests.testMergesAndMixedEscape(boolean,int,int)" - [Failed IR rules: 1]:
> 5) Method "compiler.c2.irTests.scalarReplacement.AllocationMergesTests$Point[] compiler.c2.irTests.scalarReplacement.AllocationMergesTests.testNestedObjectsArray(boolean,int,int)" - [Failed IR rules: 1]:
> 6) Method "int compiler.c2.irTests.scalarReplacement.AllocationMergesTests.testNestedObjectsNoEscapeObject(boolean,int,int)" - [Failed IR rules: 1]:
> 7) Method "compiler.c2.irTests.scalarReplacement.AllocationMergesTests$Point compiler.c2.irTests.scalarReplacement.AllocationMergesTests.testNestedObjectsObject(boolean,int,int)" - [Failed IR rules: 1]:

@vnkozlov - sorry about that. I fixed the code now and all GHA tests are passing.

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PR Comment: https://git.openjdk.org/jdk/pull/12897#issuecomment-1512148978