https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111743
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=107601
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
x86_64 defines SLOW_BYTE_ACCESS which caues some (if not all) of the issues
here:
```
;; _3 = bf.c;
(insn 9 8 10 (parallel [
(set (reg:DI 106)
(lshiftrt:DI (reg/v:DI 104 [ bf ])
(const_int 32 [0x20])))
(clobber (reg:CC 17 flags))
]) "/app/example.cpp":5:58 -1
(nil))
(insn 10 9 0 (parallel [
(set (reg:HI 100 [ _3 ])
(and:HI (subreg:HI (reg:DI 106) 0)
(const_int 1023 [0x3ff])))
(clobber (reg:CC 17 flags))
]) "/app/example.cpp":5:58 -1
(nil))
;; _4 = (unsigned int) _3;
(insn 11 10 0 (set (reg:SI 101 [ _4 ])
(zero_extend:SI (reg:HI 100 [ _3 ]))) "/app/example.cpp":5:46 -1
(nil))
```
Uses HImode (short) here due to SLOW_BYTE_ACCESS being defined rather than the
SImode (int).
