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More trace optimisations#1552

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ptersilie merged 9 commits intoykjit:masterykjit/yk:masterfrom ltratt:more_trace_optsltratt/yk:more_trace_optsCopy head branch name to clipboardJan 20, 2025

+576-230

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Commits on Jan 16, 2025

• The canonicalisation case can't possibly happen.

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• Constant fold BinOp::Shl.

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  301c652

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• Optimise 0 << x and 0 >> x to 0.

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• Bork when we find obvious constant folding we haven't yet implemented.

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• If we see non-ints with bit ops (shift left etc.) we have malformed IR.

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• Optimise BinOp::Xor.

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• Add canonicalisation tests.

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• Deal with poison in Shl properly.

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Commits on Jan 17, 2025

• Optimise Select instructions.

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