[Bug target/78811] [7 Regression] raw-string-6.c testsuite failure

[dje at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78811

--- Comment #2 from David Edelsohn <dje at gcc dot gnu.org> ---
Started somewhere between 243555 and 243578.
Requires -mcpu=power7 or lower. Works with -mcpu=power8.
Possibly r243578 combine.c change.