Details
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Bug
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Resolution: Fixed
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P3
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14, 15
Backports
| Issue | Fix Version | Assignee | Priority | Status | Resolution | Resolved In Build |
|---|---|---|---|---|---|---|
| JDK-8237061 | 15 | Jatin Bhateja | P3 | Resolved | Fixed | b06 |
| JDK-8238128 | 14.0.1 | Unassigned | P3 | Resolved | Fixed | b02 |
Description
While merging the vectorIntrinsics with generic operands, we came across an issue:
If the vector operand is a phi node then Matcher::specialize_vector_operand(MachNode* m, uint idx) is not able to specialize vector register type and throws an assert that phi is not a Mach node.
This problem was not seen on jdk mainline, mostly because vector phi nodes usually don't occur there as auto-vectorization is limited to single basic block counted loops.
If the vector operand is a phi node then Matcher::specialize_vector_operand(MachNode* m, uint idx) is not able to specialize vector register type and throws an assert that phi is not a Mach node.
This problem was not seen on jdk mainline, mostly because vector phi nodes usually don't occur there as auto-vectorization is limited to single basic block counted loops.
Attachments
Issue Links
- backported by
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JDK-8237061 Issues with specializing vector register type for phi operand with generic operands
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- Resolved
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- Resolved
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- relates to
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JDK-8234391 C2: Generic vector operands
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- Resolved
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