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[TargetLibraryInfo] Add support for fls, flsl, flsll. 

This is a prerequisite for further optimisations of these functions,
which will be commited as a separate patch.

Differential Revision:	http://reviews.llvm.org/D14219

llvm-svn: 252535
This commit is contained in:
Davide Italiano 2015-11-09 23:23:20 +00:00
parent ccd9419266
commit bfd3082e85
2 changed files with 19 additions and 0 deletions
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9
llvm/include/llvm/Analysis/TargetLibraryInfo.def
View File

@ -406,6 +406,15 @@ TLI_DEFINE_STRING_INTERNAL("floorf")
/// long double floorl(long double x);
TLI_DEFINE_ENUM_INTERNAL(floorl)
TLI_DEFINE_STRING_INTERNAL("floorl")
/// int fls(int i);
TLI_DEFINE_ENUM_INTERNAL(fls)
TLI_DEFINE_STRING_INTERNAL("fls")
/// int flsl(long int i);
TLI_DEFINE_ENUM_INTERNAL(flsl)
TLI_DEFINE_STRING_INTERNAL("flsl")
/// int flsll(long long int i);
TLI_DEFINE_ENUM_INTERNAL(flsll)
TLI_DEFINE_STRING_INTERNAL("flsll")
/// double fmax(double x, double y);
TLI_DEFINE_ENUM_INTERNAL(fmax)
TLI_DEFINE_STRING_INTERNAL("fmax")

10
llvm/lib/Analysis/TargetLibraryInfo.cpp
View File

@ -350,6 +350,16 @@ static void initialize(TargetLibraryInfoImpl &TLI, const Triple &T,
TLI.setUnavailable(LibFunc::ffsll);
}
// The following functions are available on at least FreeBSD:
// http://svn.freebsd.org/base/head/lib/libc/string/fls.c
// http://svn.freebsd.org/base/head/lib/libc/string/flsl.c
// http://svn.freebsd.org/base/head/lib/libc/string/flsll.c
if (!T.isOSFreeBSD()) {
TLI.setUnavailable(LibFunc::fls);
TLI.setUnavailable(LibFunc::flsl);
TLI.setUnavailable(LibFunc::flsll);
}
// The following functions are available on at least Linux:
if (!T.isOSLinux()) {
TLI.setUnavailable(LibFunc::dunder_strdup);