Messages in this thread |  | | From | Michael Ellerman <> | Subject | Re: [PATCH v4 1/2] powerpc/uaccess: Implement unsafe_put_user() using 'asm goto' | Date | Sat, 13 Jun 2020 20:47:11 +1000 |
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Nick Desaulniers <ndesaulniers@google.com> writes:
> On Thu, Jun 11, 2020 at 4:53 PM Segher Boessenkool > <segher@kernel.crashing.org> wrote: >> >> On Thu, Jun 11, 2020 at 03:43:55PM -0700, Nick Desaulniers wrote: >> > Segher, Cristophe, I suspect Clang is missing support for the %L and %U >> > output templates [1]. ... > > IIUC the bug report correctly, it looks like LLVM is failing for the > __put_user_asm2_goto case for -m32. A simple reproducer: > https://godbolt.org/z/jBBF9b
If you add `-mregnames` you get register names:
https://godbolt.org/z/MxLjhF
foo: stw %r3, 0(%r5) stw %r4, 4(%r5) blr
cheers
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