[PATCH] D88238: [APFloat] convert SNaN to QNaN in convert() and raise Invalid signal

[Eli Friedman via Phabricator via llvm-commits]

efriedma added a comment.

Ooh, the MIPS case is weird...

Apparently someone, a while back, made a halfhearted effort at supporting the old MIPS NaN encoding, which reverses the distinction between SNaNs and QNaNs.  See http://reviews.llvm.org/D7882 .  Of course, it doesn't really work because constant folding doesn't understand the reversal.

Probably you should change clang/test/CodeGen/mips-unsupported-nan.c so it doesn't truncate the result of __builtin_nan().  Otherwise, you're not really making any more broken than it is already.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D88238/new/

https://reviews.llvm.org/D88238