[Bug rtl-optimization/52055] load of 64-bit pointer reads 64 bits even when only 32 are used

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52055

Drea Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|NEW                         |RESOLVED

--- Comment #6 from Drea Pinski <pinskia at gcc dot gnu.org> ---

Trying 6 -> 7:
    6: r86:DI=[r87:DI]
      REG_DEAD r87:DI
    7: r85:SI=r86:DI#0
      REG_DEAD r86:DI
Successfully matched this instruction:
(set (reg:SI 85 [ [/app/example.cpp:3:37] *i_3(D) ])
    (mem:SI (reg:DI 87) [1 [/app/example.cpp:3:37] *i_3(D)+0 S4 A64]))
allowing combination of insns 6 and 7
original costs 4 + 4 = 8
replacement cost 4

r11-6843-gefb6bc55a93a1b