Add preliminary support for inline assembly for msp430. #93219
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…askrgr Rollup of 8 pull requests Successful merges: - rust-lang#91526 (rustc_lint: Some early linting refactorings) - rust-lang#92555 (Implement RFC 3151: Scoped threads.) - rust-lang#93213 (Fix `let_chains` and `if_let_guard` feature flags) - rust-lang#93219 (Add preliminary support for inline assembly for msp430.) - rust-lang#93226 (Normalize field access types during borrowck) - rust-lang#93227 (Liberate late bound regions when collecting GAT substs in wfcheck) - rust-lang#93229 (Remove DiagnosticBuilder.quiet) - rust-lang#93234 (rustc_mir_itertools: Avoid needless `collect` with itertools) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup
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577: Bring documentation on MSP430 up to date. r=burrbull a=cr1901 Crate versions must be `0.3.0` or higher now; minor version `0.2.0` and below is unsupported due to (among other things) bumping to bare-metal `1.0.0` and [using](rust-lang/rust#93219) Rust inline assembly to implement useful operations. Co-authored-by: William D. Jones <[email protected]>
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577: Bring documentation on MSP430 up to date. r=burrbull a=cr1901 Crate versions must be `0.3.0` or higher now; minor version `0.2.0` and below is unsupported due to (among other things) bumping to bare-metal `1.0.0` and [using](rust-lang/rust#93219) Rust inline assembly to implement useful operations. Co-authored-by: William D. Jones <[email protected]>
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The
llvm_asmmacro was removed recently, and the MSP430 backend relies on inline assembly to build useful embedded apps. I conveniently "found" time to implement basic support for the new inlineasmmacro syntax with the help of @Amanieu :D.In addition to tests in the compiler, I have tested this locally against deployed MSP430 code and have not found any noticeable differences in firmware operation or
objdumpdisassemblies between the oldllvm_asmand the newasmsyntax.