[LLVMdev] Question about FMA formation

[Shuxin Yang]

Hi, Dear All:

    I'm going implement FMA formation. On some architectures, "FMA a, b, 
c" is more precise than
"a * b + c".  I'm wondering if FMA could be less precise. In the former 
case, can we enable FMA
  formation despite restrictive FP mode?

  Thanks
Shuxin