Port asm tests to cg_gcc #839

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1. antoyo

   added

   tests

   on Jan 25, 2026
2. harin-ramesh commented on Mar 14, 2026

   

   harin-ramesh

   on Mar 14, 2026

   Last edited by harin-ramesh

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   https://github.com/rust-lang/rust/tree/main/tests/assembly-llvm/asm
   https://github.com/rust-lang/rust/tree/main/tests/codegen-llvm/asm

   Just to confirm, are these the tests that need to be ported?
3. antoyo commented on Mar 14, 2026

   

   antoyo

   on Mar 14, 2026

   ContributorAuthor

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   Yes, it is those tests.

   Btw, sorry about not getting back to review your PRs yet, I'm still fairly busy.
   I should be able to get back to them in ~2 weeks.
4. harin-ramesh commented on Apr 4, 2026

   

   harin-ramesh

   on Apr 4, 2026

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   I noticed that clobbers for registers such as x87 and MMX are currently being dropped.

   In src/asm.rs, the existing logic relies on supported_types to determine whether a register is valid for the target. However, these registers are clobber-only, they don’t support any data types. As a result, they get filtered out by the current check. Is this an expected an behavior.
   

   rustc_codegen_gcc/src/asm.rs

   Line 221 in daf8bb9

   x => x.supported_types(asm_arch, true).iter().any(