[PATCH] D87822: [FPEnv] Evaluate constant expressions under non-default rounding modes

[Serge Pavlov via Phabricator via cfe-commits]

sepavloff created this revision.
sepavloff added reviewers: rsmith, rjmccall, mibintc, kpn.
Herald added a project: clang.
sepavloff requested review of this revision.

The change implements evaluation of constant floating point expressions
under non-default rounding modes. The main objective was to support
evaluation of global variable initializers, where constant rounding mode
may be specified by `#pragma STDC FENV_ROUND`.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D87822

Files:
  clang/lib/AST/ExprConstant.cpp
  clang/lib/Sema/SemaAttr.cpp
  clang/test/AST/const-fpfeatures-diag.c
  clang/test/AST/const-fpfeatures.c

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