This pass was adding new function calls without adding the strictfp attribute as required by the rules laid out in the langref. With this change a make check has 4-5 fewer failing tests with the Verifier changes in D146845. LangRef: https://llvm.org/docs/LangRef.html#constrained-floating-point-intrinsics Test failures found with "https://reviews.llvm.org/D146845".