re: xsrc/44159: startx fails w/ recent xsrc changes in -current

[matthew green <mrg%eterna.com.au@localhost>]

this seems to be a GCC codegen problem.

the function _pixman_implementation_create_sse2() generates code
that, given a correctly aligned stack upon entry, will call SSE2
insns expecting 16 byte alignment, with an 8 byte aligned value
in %rbp.

i think the right solution for now is to simply disable the SSE2
support on amd64 until we have a fixed compiler.


.mrg.