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add asm_cfg: #[cfg(...)] within asm! #140367

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add asm_cfg: #[cfg(...)] within asm! #140367

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d3157c9
determine later whether an explicit reg was used
folkertdev Apr 29, 2025
408cfef
extract operand parser
folkertdev Apr 29, 2025
fbc7181
a new parser generating the exact same error messages
folkertdev Apr 29, 2025
61a9db7
cleanup `parse_clobber_abi`
folkertdev Apr 29, 2025
e15b0f6
cleanup `parse_options`
folkertdev Apr 29, 2025
f39a13a
cleanup unused code
folkertdev Apr 29, 2025
2860b75
more cleanup
folkertdev Apr 29, 2025
7935e87
leave a note about maybe delaying an error message
folkertdev Apr 29, 2025
d30124a
attempt to have rustfmt use the new logic
folkertdev Apr 29, 2025
6cc60a6
support `#[cfg(...)]` on arguments to the `asm!` macros
folkertdev Apr 30, 2025
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5 changes: 5 additions & 0 deletions compiler/rustc_builtin_macros/messages.ftl
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Original file line number Diff line number Diff line change
@@ -1,6 +1,11 @@
builtin_macros_alloc_error_must_be_fn = alloc_error_handler must be a function
builtin_macros_alloc_must_statics = allocators must be statics

builtin_macros_asm_attribute_not_supported =
this attribute is not supported on assembly
builtin_macros_asm_cfg =
the `#[cfg(/* ... */)]` and `#[cfg_attr(/* ... */)]` attributes on assembly are unstable

builtin_macros_asm_clobber_abi = clobber_abi
builtin_macros_asm_clobber_no_reg = asm with `clobber_abi` must specify explicit registers for outputs
builtin_macros_asm_clobber_outputs = generic outputs
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