[PATCH] D44909: [DAGCombine] (float)((int) f) --> ftrunc (PR36617)

[Sanjay Patel via Phabricator via llvm-commits]

spatel added a comment.

In https://reviews.llvm.org/D44909#1126945, @rdhindsa wrote:

> What is the expected behavior for casting float values in range (-1.0 , 0.0) from float->int->float? If the expected value is -0.0 (instead of 0.0), what is the reason for that?


Not sure I understand the question. Casting FP (-1.0, 0.0) to int with round-to-zero mode results in integer 0. Converting that back to FP is always 0.0.


Repository:
  rL LLVM

https://reviews.llvm.org/D44909