[Bug target/97887] [10/11 Regression] Failure to optimize neg plus div to avoid using x87 floating point stack

[ubizjak at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97887

--- Comment #3 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Richard Biener from comment #2)
> combine first makes recog pick negsf2_i387_1:

This should have the following insn constraint:

  "TARGET_80387 && !(SSE_FLOAT_MODE_P (<MODE>mode) && TARGET_SSE_MATH)"

to hide it from combine in cases where relevant SSE mode is available.