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Cranelift: Consider shifts as "simple" arithmetic in egraph cost model (#5646)
pull/5651/head
Nick Fitzgerald
2 years ago
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1 changed files with
4 additions and
1 deletions
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cranelift/codegen/src/egraph/cost.rs
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@ -90,7 +90,10 @@ pub(crate) fn pure_op_cost(op: Opcode) -> Cost { |
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| Opcode::BorNot |
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| Opcode::Bxor |
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| Opcode::BxorNot |
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| Opcode::Bnot => Cost(2), |
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| Opcode::Bnot |
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| Opcode::Ishl |
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| Opcode::Ushr |
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| Opcode::Sshr => Cost(2), |
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// Everything else (pure.)
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_ => Cost(3), |
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} |
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