https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62014
--- Comment #7 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> --- (In reply to ktkachov from comment #6) > One crude way to look is by looking for the "w" constraint that signifies > usage of FP registers in the md files and seeing whether those usages are > properly guarded by the 'simd' attribute or by TARGET_FLOAT/TARGET_SIMD. > > One quick search shows the absdi2 define_insn_and_split that uses 'w' in its > second alternative to emit "abs\\t%d0, %d1" but doesn't guard it by the > 'simd' attribute. Maybe that's a place to start to construct a testcase Thanks, I was about to do this after my morning cuppa :) If this was noticed from a testcase, it should be trivial to work out which pattern it was that had the w registers by just looking at the output with -dp. Anyway I agree that absdi2 looks the most suspicious.
