diff options
Diffstat (limited to 'llvm/lib/Analysis')
| -rw-r--r-- | llvm/lib/Analysis/TargetLibraryInfo.cpp | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/llvm/lib/Analysis/TargetLibraryInfo.cpp b/llvm/lib/Analysis/TargetLibraryInfo.cpp index 29e460ec785..50a05a897e9 100644 --- a/llvm/lib/Analysis/TargetLibraryInfo.cpp +++ b/llvm/lib/Analysis/TargetLibraryInfo.cpp @@ -49,6 +49,16 @@ static bool hasSinCosPiStret(const Triple &T) { return true; } +static bool hasBcmp(const Triple &TT) { + // Posix removed support from bcmp() in 2001, but the glibc and several + // implementations of the libc still have it. + if (TT.isOSLinux()) + return TT.isGNUEnvironment() || TT.isMusl(); + // Both NetBSD and OpenBSD are planning to remove the function. Windows does + // not have it. + return TT.isOSFreeBSD() || TT.isOSSolaris() || TT.isOSDarwin(); +} + /// Initialize the set of available library functions based on the specified /// target triple. This should be carefully written so that a missing target /// triple gets a sane set of defaults. @@ -141,6 +151,9 @@ static void initialize(TargetLibraryInfoImpl &TLI, const Triple &T, TLI.setUnavailable(LibFunc_sincospif_stret); } + if (!hasBcmp(T)) + TLI.setUnavailable(LibFunc_bcmp); + if (T.isMacOSX() && T.getArch() == Triple::x86 && !T.isMacOSXVersionLT(10, 7)) { // x86-32 OSX has a scheme where fwrite and fputs (and some other functions |
