bors d6eb0f5a09 Auto merge of #122582 - scottmcm:swap-intrinsic-v2, r=oli-obk ...

Let codegen decide when to `mem::swap` with immediates

Making `libcore` decide this is silly; the backend has so much better information about when it's a good idea.

Thus this PR introduces a new `typed_swap` intrinsic with a fallback body, and replaces that fallback implementation when swapping immediates or scalar pairs.

r? oli-obk

Replaces #111744, and means we'll never need more libs PRs like #111803 or #107140

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..

asm

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auxiliary

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libs

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nvptx-kernel-abi

NVPTX: Enable previously disabled tests

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stack-protector

Rename wasm32-wasi-preview1-threads to wasm32-wasip1-threads

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targets

Add bare metal riscv32 target.

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aarch64-naked-fn-no-bti-prolog.rs

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aarch64-pointer-auth.rs

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align_offset.rs

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closure-inherit-target-feature.rs

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dwarf4.rs

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dwarf5.rs

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is_aligned.rs

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niche-prefer-zero.rs

[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives

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nvptx-arch-default.rs

NVPTX: Enable previously disabled tests

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nvptx-arch-emit-asm.rs

NVPTX: Enable previously disabled tests

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nvptx-arch-link-arg.rs

[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives

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nvptx-arch-target-cpu.rs

NVPTX: Enable previously disabled tests

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nvptx-atomics.rs

[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives

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nvptx-internalizing.rs

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nvptx-linking-binary.rs

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nvptx-linking-cdylib.rs

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nvptx-safe-naming.rs

NVPTX: Enable previously disabled tests

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panic-no-unwind-no-uwtable.rs

[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives

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panic-unwind-no-uwtable.rs

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pic-relocation-model.rs

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pie-relocation-model.rs

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simd-bitmask.rs

Add tests for the generated assembly of mask related simd instructions.

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simd-intrinsic-gather.rs

Add tests for the generated assembly of mask related simd instructions.

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simd-intrinsic-mask-load.rs

Add tests for the generated assembly of mask related simd instructions.

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simd-intrinsic-mask-reduce.rs

Add tests for the generated assembly of mask related simd instructions.

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simd-intrinsic-mask-store.rs

Add tests for the generated assembly of mask related simd instructions.

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simd-intrinsic-scatter.rs

Add tests for the generated assembly of mask related simd instructions.

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simd-intrinsic-select.rs

Add tests for the generated assembly of mask related simd instructions.

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slice-is_ascii.rs

Ignore less tests in debug builds

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sparc-struct-abi.rs

[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives

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stack-probes.rs

[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives

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static-relocation-model.rs

Ignore less tests in debug builds

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strict_provenance.rs

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target-feature-multiple.rs

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thin-lto.rs

[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives

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wasm_exceptions.rs

Update test directives for wasm32-wasip1

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x86_64-array-pair-load-store-merge.rs

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x86_64-floating-point-clamp.rs

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x86_64-fortanix-unknown-sgx-lvi-generic-load.rs

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x86_64-fortanix-unknown-sgx-lvi-generic-ret.rs

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x86_64-fortanix-unknown-sgx-lvi-inline-assembly.rs

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x86_64-function-return.rs

[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives

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x86_64-naked-fn-no-cet-prolog.rs

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x86_64-no-jump-tables.rs

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x86_64-sse_crc.rs

[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives

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x86_64-typed-swap.rs

Avoid non-windows non-linux in assembly x64 test

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