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ISLE: built-in integer types #9610

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@Kmeakin Kmeakin commented Nov 15, 2024

Follow up to #9593, adding all the built-in integer types (u8 .. u128, i8 .. i128 plus usize and isize).

Integer literal expressions and patterns are still allowed to type-check against primitive types, because there are a lot of places in the lowering/optimization code that uses (type Foo (primitive Foo)) where Foo is declared as a type alias of an integer type in Rust code. Not sure what to do about this. Perhaps it would be clearer to rename "primitive" types to "opaque" or "extern" types (and also have a mechanism for declaring transparent type aliases in ISLE)?

Closes #5431 and #3573

@Kmeakin Kmeakin requested a review from a team as a code owner November 15, 2024 01:50
@Kmeakin Kmeakin requested review from abrown and removed request for a team November 15, 2024 01:50
@github-actions github-actions bot added cranelift Issues related to the Cranelift code generator isle Related to the ISLE domain-specific language labels Nov 15, 2024
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cc @cfallin, @fitzgen

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Thanks! Some comments below but nothing major. This is a nice refactor and makes the language semantically a little cleaner; I like it.

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Copyright (c) 2024, Arm Limited.

Signed-off-by: Karl Meakin <karl.meakin@arm.com>
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cfallin commented Nov 19, 2024

Something is broken in the build in CI; once it's green I'm happy to merge.

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cranelift-isle: richer integer types
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