Revert "Do materialize for floating point"
1) The commit was made despite profound lack of understanding:
"I did not understand the comment about using dyn_cast instead of isa. I will
commit as is and make the update after. You can explain what you meant to me."
Commit first, understand later isn't OK.
2) Review comments were simply ignored:
"Can you edit the summary to describe what the patch is for? It appears to be
a list of commits at the moment."
3) The patch got LGTM'd off-list without any indication of readiness.
4) The public mailing list was excluded from patch review so all of this was
hidden from the community.
This reverts commit r210414.
llvm-svn: 210424