g77 -ieee crash in 1.0.3a

[Craig Burley]

Dave, could you add this test case to g77.f-torture/compile as,
say, 980729-0.f?

        tq vm, (burley)


* I get the same error message using a 19980726-CVS'd egcs-1.1  
* prerelease snapshot, using the following, somewhat simpler example:
*
      subroutine a(b,c)
      b = max(b,c)
      end
*
* The only important option in the list above is -mieee:  With it,  
* you'll get the error, without it there's no problem (and the  
* expected floating conditional move is used; probably the above insn  
* also tries that, but perhaps it gets confused by the float_extends -  
* I've no idea why they're necessary, because all variables are  
* single precision).