[all-commits] [llvm/llvm-project] 9ed881: LoongArch: Improve detection of valid TripleABI (#...

[mintsuki via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 9ed8816dc63776259d2190bdc8a7a29698c62749
      https://github.com/llvm/llvm-project/commit/9ed8816dc63776259d2190bdc8a7a29698c62749
  Author: mintsuki <36459316+mintsuki at users.noreply.github.com>
  Date:   2025-07-22 (Tue, 22 Jul 2025)

  Changed paths:
    M llvm/lib/Target/LoongArch/MCTargetDesc/LoongArchBaseInfo.cpp
    M llvm/test/CodeGen/LoongArch/target-abi-from-triple-edge-cases.ll

  Log Message:
  -----------
  LoongArch: Improve detection of valid TripleABI (#147952)

If the environment is considered to be the triple component as a whole,
so, including the object format, if any, and if that is the intended
behaviour, then the loongarch64 function `computeTargetABI()` should be
changed to not rely on `hasEnvironment()`, but, rather, to check if
there is a non-unknown environment set.

Without this change, using a (ideally valid) target of
loongarch64-unknown-none-elf, with a manually specified ABI of lp64s,
will result in a completely superfluous warning:

```
warning: triple-implied ABI conflicts with provided target-abi 'lp64s', using target-abi
```



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