LibJS/Bytecode: Add Operand in/out to all the bytecode codegen helpers

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This is pure prep work for refactoring the bytecode to use more operands
instead of only registers.

generate_bytecode() virtuals now return an Optional<Operand>, and the
idea is to return an Operand referring to the value produced by this
AST node.

They also take an Optional<Operand> "preferred_dst" input. This is
intended to communicate the caller's preference for an output operand,
if any. This will be used to elide temporaries when we can store the
result directly in a local, for example.

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This commit is contained in:

Andreas Kling 2024-02-03 20:16:02 +01:00

parent e46de4eb59

commit 7f1a62a1d3

4 changed files with 375 additions and 370 deletions

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Userland/Libraries/LibJS/Bytecode/ASTCodegen.cpp

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