RPCS3/llvm-mirror
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2024-11-22 18:54:02 +01:00
Code Issues Projects Releases Wiki Activity

Remove old fenv.h workaround for a historic clang driver bug

Browse Source 
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.

llvm-svn: 210485
This commit is contained in:
Alp Toker 2014-06-09 19:00:52 +00:00
parent a026ddb3ba
commit a9e2748af6
1 changed files with 2 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
lib/Analysis/ConstantFolding.cpp
View File

@ -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