[PATCH] D149123: [AArch64][InlineAsm]Add Clang support for flag output constraints

[Mingming Liu via Phabricator via cfe-commits]

mingmingl added a comment.

While testing this patch with `./bin/clang -cc1 -S -triple=aarch64 inline-asm-aarch64-flag-output.c` (which invokes global-isel for instruction selection according to `print-after-all` output), turns out GlobalISel doesn't support flag output yet (for x86 or aarch64).

`/bin/clang -cc1 -O1 -S -triple=aarch64 file.c` and `/bin/clang -cc1 -O2 -S -triple=aarch64 file.c` works.

I filed https://github.com/llvm/llvm-project/issues/62343 to track but but think the issue is a non-blocker of this patch and D149032 <https://reviews.llvm.org/D149032> for now.


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https://reviews.llvm.org/D149123