[Bug target/70232] [6 regression] excessive stack usage with -O2

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70232

--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Btw, the bswap pass for arm doesn't detect any bswap32 or bswap64 instruction.

There is

(define_expand "bswapsi2"
  [(set (match_operand:SI 0 "s_register_operand" "=r")
        (bswap:SI (match_operand:SI 1 "s_register_operand" "r")))]
"TARGET_EITHER && (arm_arch6 || !optimize_size)"

but no bswapdi2.