[Patch AArch64] Warn on unpredictable stlxrb , stlxrh and stlxr cases.
A recent case in golang highlighted that gas wasn't warning on these unpredictable cases in the architecture. Fixed thusly. I need to audit gcc to make sure we have early clobbers on the patterns but that's a separate patch. Tested aarch64-none-elf and gas Ok ? Ramana 2018-06-29 Ramana Radhakrishnan <firstname.lastname@example.org> * config/tc-aarch64.c (warn_unpredictable_ldst): Add unpredictable cases for ldxp, stlxrb, stlxrh, stlxr. * testsuite/gas/aarch64/diagnostic.s: New tests. * testsuite/gas/aarch64/diagnostic.l: Adjust.
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