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| author | Alp Toker <alp@nuanti.com> | 2014-06-09 19:00:52 +0000 |
|---|---|---|
| committer | Alp Toker <alp@nuanti.com> | 2014-06-09 19:00:52 +0000 |
| commit | 5396370ebb0bbda82f147854fc88a5dda4a68a82 (patch) | |
| tree | d507a3b0434380bca58beb459de2150276c44875 /lib/Analysis | |
| parent | f4cf404837d962c67501ee0e07028801c9b10b6d (diff) | |
| download | llvm-5396370ebb0bbda82f147854fc88a5dda4a68a82.tar.gz llvm-5396370ebb0bbda82f147854fc88a5dda4a68a82.tar.bz2 llvm-5396370ebb0bbda82f147854fc88a5dda4a68a82.tar.xz | |
Remove old fenv.h workaround for a historic clang driver bug
Tested and works fine with clang using libstdc++.
All indications are that this was fixed some time ago and isn't a problem with
any clang version we support.
I've added a note in PR6907 which is still open for some reason.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210485 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Analysis')
| -rw-r--r-- | lib/Analysis/ConstantFolding.cpp | 11 |
1 files changed, 2 insertions, 9 deletions
diff --git a/lib/Analysis/ConstantFolding.cpp b/lib/Analysis/ConstantFolding.cpp index 0b6f11ad82..eb3e2c6369 100644 --- a/lib/Analysis/ConstantFolding.cpp +++ b/lib/Analysis/ConstantFolding.cpp @@ -39,13 +39,6 @@ #ifdef HAVE_FENV_H #include <fenv.h> -#define USE_FENV -#endif - -// FIXME: Clang's #include handling apparently doesn't work for libstdc++'s -// fenv.h; see PR6907 for details. -#if defined(__clang__) && defined(_GLIBCXX_FENV_H) -#undef USE_FENV #endif using namespace llvm; @@ -1329,7 +1322,7 @@ static Constant *GetConstantFoldFPValue(double V, Type *Ty) { namespace { /// llvm_fenv_clearexcept - Clear the floating-point exception state. static inline void llvm_fenv_clearexcept() { -#if defined(USE_FENV) && HAVE_DECL_FE_ALL_EXCEPT +#if defined(HAVE_FENV_H) && HAVE_DECL_FE_ALL_EXCEPT feclearexcept(FE_ALL_EXCEPT); #endif errno = 0; @@ -1340,7 +1333,7 @@ static inline bool llvm_fenv_testexcept() { int errno_val = errno; if (errno_val == ERANGE || errno_val == EDOM) return true; -#if defined(USE_FENV) && HAVE_DECL_FE_ALL_EXCEPT && HAVE_DECL_FE_INEXACT +#if defined(HAVE_FENV_H) && HAVE_DECL_FE_ALL_EXCEPT && HAVE_DECL_FE_INEXACT if (fetestexcept(FE_ALL_EXCEPT & ~FE_INEXACT)) return true; #endif |