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Auto merge of #14787 - HKalbasi:mir2, r=HKalbasi

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MIR episode 5

This PR inits drop support (it is very broken at this stage, some things are dropped multiple time, drop scopes are wrong, ...) and adds stdout support (`println!` doesn't work since its expansion is dummy, but `stdout().write(b"hello world\n")` works if you use `RA_SYSROOT_HACK`) for interpreting. There is no useful unit test that it can interpret yet, but it is a good sign that it didn't hit a major road block yet.

In MIR lowering, it adds support for slice pattern and anonymous const blocks, and some fixes so that we can evaluate `SmolStr::new_inline` in const eval. With these changes, 57 failed mir body remains.
This commit is contained in:
bors 2023-05-18 09:44:26 +00:00
commit 034d7c8537
36 changed files with 1529 additions and 357 deletions
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3
crates/hir-ty/src/layout/tests.rs
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@ -233,7 +233,8 @@ fn associated_types() {
}
struct Foo<A: Tr>(<A as Tr>::Ty);
struct Goal(Foo<i32>);
struct Bar<A: Tr>(A::Ty);
struct Goal(Foo<i32>, Bar<i32>, <i32 as Tr>::Ty);
}
check_size_and_align(
r#"