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  1. JDK
  2. JDK-8236443

Issues with specializing vector register type for phi operand with generic operands

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    • Subcomponent:
    • Introduced In Version:
      14
    • Resolved In Build:
      b32
    • CPU:
      x86

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        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.

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                • Assignee:
                  jbhateja Jatin Bhateja
                  Reporter:
                  sviswanathan Sandhya Viswanathan
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                  • Created:
                    Updated:
                    Resolved: