Generate inline superclass test for Class.isAssignableFrom on Z #20855
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adds superclass check checks for class depth at compile time to skip over superclass test for the case when toClassDepth > fromClassDepth Signed-off-by: Matthew Hall <matthew.hall3@outlook.com>
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@r30shah can you review please? |
r30shah
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Jan 3, 2025
| generateS390BranchInstruction(cg, TR::InstOpCode::BRC, TR::InstOpCode::COND_BRC, node, failLabel); | ||
| } | ||
| } | ||
| genTestIsSuper(cg, node, fromClassReg, toClassReg, sr1, sr2, NULL, NULL, toClassDepth, failLabel, successLabel, helperCallLabel, deps, NULL, false, NULL, NULL); |
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getTestIsSuper is used by checkAssignableFrom old code and old instance of and checkcast code. We should make the changes is new isAssignableFrom with intention to clean-up old code in mind. I would take a look at genTestIsSuper and genInstanceOfOrCheckcastSuperClassTest and refactor common code to the single function. Currently the code in both is repeated twice with some subtle changes
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adds superclass check
checks for class depth at compile time to skip over superclass test for the case when toClassDepth > fromClassDepth
This PR does not enable the change. It will be enabled in a later PR.
tests on this branch:
vmfarm
jenkins personal
tests on branch with change enabled:
vmfarm
jenkins personal