[X86] Remove isReMaterializable from X87 floating point constant loads and constant pool loads.
Summary: These instructions update FPSW so they aren't generically safe to rematerialize into any location if FPSW is live for a comparison result. They also use FPCW for exception masking control. Though the only exception they can generate is stack overflow and we manage the stack ourselves so that's not really going to occur.
Reviewers: RKSimon, spatel
Reviewed By: RKSimon
Differential Revision: https://reviews.llvm.org/D57934
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@353536 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed