[Bug target/88402] inefficient code generation for mask from CC

[amonakov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88402

Alexander Monakov <amonakov at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |amonakov at gcc dot gnu.org

--- Comment #2 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
It's possible to change signed comparison to unsigned by rotating integer
domain by half, i.e.

  foo(a, b) == bar(a^0x80000000, b^0x80000000)

but this increases register pressure if a and b are not dead after the
comparison.