5b7d56f6f7
This PR adds support for `if-let` clauses, as proposed in bytecodealliance/rfcs#21. These clauses augment the left-hand side (pattern-matching phase) of rules in the ISLE instruction-selection DSL with sub-patterns matching on sub-expressions. The ability to list additional match operations to perform, out-of-line from the original toplevel pattern, greatly simplifies some idioms. See the RFC for more details and examples of use.
17 lines
309 B
Rust
17 lines
309 B
Rust
mod iflets;
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struct Context;
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impl iflets::Context for Context {
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fn A(&mut self, a: u32, b: u32) -> Option<u32> {
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Some(a + b)
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}
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fn B(&mut self, value: u32) -> Option<(u32, u32)> {
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Some((value, value + 1))
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}
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}
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fn main() {
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iflets::constructor_C(&mut Context, 1, 2, 3, 4);
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}
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