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Type:
Enhancement
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Resolution: Fixed
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Priority:
P4
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Affects Version/s: 17, 18
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Component/s: hotspot
In current SLP, the vectorization of Math.abs() with char type is intentionally disabled after JDK-8261022 because it generates incorrect result before.
But in Java semantics, as the char type is always non-negative, we could actually translate Math.abs(char) to a no-op by adding a no-op IR and matching rules somehow.
We can consider re-enable Math.abs() vectorization with char type.
But in Java semantics, as the char type is always non-negative, we could actually translate Math.abs(char) to a no-op by adding a no-op IR and matching rules somehow.
We can consider re-enable Math.abs() vectorization with char type.
- causes
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JDK-8371558 C2: Missing optimization opportunity in AbsNode::Ideal
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- Resolved
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- relates to
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- Resolved
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- Closed
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