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s390x: support .machine push and .machine pop assembler directives #129053

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folkertdev opened this issue Feb 27, 2025 · 1 comment
Open

s390x: support .machine push and .machine pop assembler directives #129053

folkertdev opened this issue Feb 27, 2025 · 1 comment
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backend:SystemZ enhancement Improving things as opposed to bug fixing, e.g. new or missing feature

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@folkertdev
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The documentation mentions that these directives should work (exactly like they do for powerpc):

.machine STRING[+EXTENSION]…
This directive allows changing the machine for which code is generated. string may be any of the -march= selection options, or push, or pop. .machine push saves the currently selected cpu, which may be restored with .machine pop.

But LLVM does not currently accept them in the ASM parser

This came up here rust-lang/rust#137720 (comment)
@folkertdev folkertdev mentioned this issue Feb 27, 2025
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@uweigand
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@JonPsson1 @dominik-steenken

@EugeneZelenko EugeneZelenko added enhancement Improving things as opposed to bug fixing, e.g. new or missing feature and removed new issue labels Feb 27, 2025
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@uweigand @folkertdev @EugeneZelenko @llvmbot