Eli Friedman 7ed3f1b26c Make uitofp and sitofp defined on overflow.
IEEE 754 defines the expected result on overflow. As far as I know,
hardware implementations (of f16), and compiler-rt (__floatuntisf)
correctly return +-Inf on overflow. And I can't think of any useful
transform that would take advantage of overflow being undefined here.

Differential Revision: https://reviews.llvm.org/D47807

llvm-svn: 334777
2018-06-14 22:58:48 +00:00
..