[Bug target/70873] [7 Regressio] 20% performance regression at 482.sphinx3 after r235442 with -O2 -m32 on Haswell.

[ubizjak at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70873

--- Comment #29 from Uroš Bizjak <ubizjak at gmail dot com> ---
Created attachment 38419
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38419&action=edit
Patch to fix problematic splitters

I'm testing the attached patch that introduces
ix86_standard_x87sse_constant_load_p function, and uses it to limit problematic
splitters only to cases, where we can actually transform the insn to a constant
load.