[Bug bootstrap/53266] Error: Unrecognized opcode: `mulhwu'

[skunk at iskunk dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53266

--- Comment #2 from Daniel Richard G. <skunk at iskunk dot org> 2012-05-07 17:42:43 UTC ---
(In reply to comment #1)
> mulhwu is a powerpc but not rs6000 instruction.

When a file failed to compile, I noticed that specifying -mcpu=powerpc got
things going again. I'm not clear on how GCC distinguishes powerpc versus
rs6000, but as far as -mcpu is concerned, the former value seems to exclude
mulhwu.