[Bug middle-end/83805] [8 Regression] Wrong constant merging for objects in different address spaces

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83805

--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Well, you have 3 objects, str1, str2 and the string literal, if the compiler
thinks all 3 are needed, it emits all of them.  Without -fmerge-all-constants
str1 can't be merged with str2 nor with any other object.