Rollup of 3 pull requests #151191
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Rollup of 3 pull requests #151191
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Makes the use expressions significantly shorter.
Sometimes the middle frames of the ICE backtrace becomes `<unknown>` on `i686-pc-windows-msvc` which then makes this test flaky.
THIR patterns: Always use type `str` for string-constant-value nodes Historically, constants and literals of type `&str` have been represented in THIR patterns as `PatKind::Const` nodes with type `&str`. That's fine for stable Rust, but `feature(deref_patterns)` also created a need to have string literal patterns of type `str` in some cases, which resulted in a number of additional special cases and inconsistencies in typechecking and in HIR-to-THIR-to-MIR lowering of patterns. We can avoid several of those special cases by having THIR treat string-constant-values as fundamentally being of type `str`, and then using `PatKind::Deref` to represent the additional `&` layer in the common case where it is needed. This allows bare `str` patterns to require very little special treatment. Existing tests should already do a good job of demonstrating that this implementation change does not affect the stable language.
Use default field values in a few more cases Makes the use expressions significantly shorter.
Disable `dump-ice-to-disk` on `i686-pc-windows-msvc` Sometimes the middle frames of the ICE backtrace becomes `<unknown>` on `i686-pc-windows-msvc` which then makes this test flaky. Noticed in rust-lang#150925 (comment). Originally expanded in rust-lang#142563 to see if it's still flaky for other `*-windows-*` targets, unfortunately the answer is yes for `i686-pc-windows-msvc` as well. r? @dianqk (or compiler or anyone really)
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Successful merges:
strfor string-constant-value nodes #151155 (THIR patterns: Always use typestrfor string-constant-value nodes)dump-ice-to-diskoni686-pc-windows-msvc#151185 (Disabledump-ice-to-diskoni686-pc-windows-msvc)r? @ghost
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