44baa65589
This reverts commit 87cef78fa1c7bf6efc544e990894a6062d56abec. The issue in the original revert is that a lit test expecting a `-nan` as an output was failing on M2. Since the IEEE 754-2008 standard does not require the sign to be printed when displaying a `nan`, this commit changes the `CHECK` for `-nan` to one that checks the result value bitcasted to an `i32` to ensure that input is being left unchanged. This check should now be independent of platform being used to run test. Reviewed By: jpienaar, mehdi_amini Differential Revision: https://reviews.llvm.org/D148941