[PATCH] D145704: Revert "Set FLT_EVAL_METHOD to -1 when fast-math is enabled."

[Zahira Ammarguellat via Phabricator via cfe-commits]

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Setting __FLT_EVAL_METHOD__ to -1 with fast-math will set __GLIBC_FLT_EVAL_METHOD to 2 and long double ends up being used for
float_t and double_t. This creates some ABI breakage with various C libraries.

See details here: https://github.com/llvm/llvm-project/issues/60781

This reverts commit bbf0d1932a3c1be970ed8a580e51edf571b80fd5 <https://reviews.llvm.org/rGbbf0d1932a3c1be970ed8a580e51edf571b80fd5>.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D145704

Files:
  clang/include/clang/Lex/Preprocessor.h
  clang/lib/Lex/PPMacroExpansion.cpp
  clang/lib/Lex/Preprocessor.cpp
  clang/lib/Sema/SemaAttr.cpp
  clang/test/CodeGen/X86/fexcess-precision.c
  clang/test/CodeGen/eval-method-fast-math.cpp
  clang/test/Preprocessor/flt_eval_macro.cpp

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