59045fa99b
This removes the existing fcvt(fmul) -> vcvtfp2fx intrinsics combine from selection dag, moving the code into a tablegen pattern like the other fixed-point converts are. This will allow gisel to share the same patterns (but this part is just SDAG). The is expected to be roughly an NFC, the existing tests keep passing, but there might be some differences due to performing the optimization later.