[Bug target/94461] [10 Regression] ICE: in extract_insn, at recog.c:2294 with __builtin_ia32_pmuludq() and -mno-sse2

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94461

--- Comment #9 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Jakub Jelinek from comment #8)
> So, I believe the r10-400-gecfdb16c54ad06ac23193e5de292fc71e5958526 change
> has been incorrect.
> We should revert those i386-builtin.def changes, and instead treat builtins
> with sole OPTION_MASK_ISA_MMX (and nothing else) as being enabled also if
> TARGET_MMX_WITH_SSE, not just with TARGET_MMX.

The problem is OPTION_MASK_ISA_MMX is used for 2 different purposes:

1. Enable MMX registers.
2. Enable MMX ISA.

pcmpeq is an MMX insn, but 128bit pcmpeq is in SSE2, not SSE.