[PATCH] D132285: [LoongArch] Implement ABI lowering

[Lu Weining via Phabricator via cfe-commits]

SixWeining added a comment.



In D132285#3739568 <https://reviews.llvm.org/D132285#3739568>, @xry111 wrote:

> In D132285#3737855 <https://reviews.llvm.org/D132285#3737855>, @SixWeining wrote:
>
>> Ignore zero-width bit fields and add a test.
>
> Thanks!  There is a GCC test (https://gcc.gnu.org/r12-7951) which can be used to test if there is any ABI incompatibility between GCC and Clang, but I guess it's not possible to run it at the early development stage of Clang.  Maybe we can run it later.

Thanks. Let me add a test for zero size arrays.

And, with the parent revison D130255 <https://reviews.llvm.org/D130255> landed, we can compile `.c` programs to loongarch executables now. But currently since the `f` and `d` target feaures  can not been passed to clang cc1 yet, we may manually pass them to clang cc1 to generate floating-point instructions. For example:

  $ clang --target=loongarch64-unknown-linux-gnu --gcc-toolchain=xxx --sysroot=xxx -Xclang -target-feature -Xclang +f main.c


Repository:
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