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//===-- TargetLibraryInfo.cpp - Runtime library information ----------------==//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the TargetLibraryInfo class.
//
//===----------------------------------------------------------------------===//
#include "llvm/Target/TargetLibraryInfo.h"
#include "llvm/ADT/Triple.h"
using namespace llvm;
// Register the default implementation.
INITIALIZE_PASS(TargetLibraryInfo, "targetlibinfo",
"Target Library Information", false, true)
char TargetLibraryInfo::ID = 0;
/// initialize - 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.
static void initialize(TargetLibraryInfo &TLI, const Triple &T) {
initializeTargetLibraryInfoPass(*PassRegistry::getPassRegistry());
// memset_pattern16 is only available on iOS 3.0 and Mac OS/X 10.5 and later.
if (T.isMacOSX()) {
if (T.isMacOSXVersionLT(10, 5))
TLI.setUnavailable(LibFunc::memset_pattern16);
} else if (T.getOS() == Triple::IOS) {
if (T.isOSVersionLT(3, 0))
TLI.setUnavailable(LibFunc::memset_pattern16);
} else {
TLI.setUnavailable(LibFunc::memset_pattern16);
}
// iprintf and friends are only available on XCore and TCE.
if (T.getArch() != Triple::xcore && T.getArch() != Triple::tce) {
TLI.setUnavailable(LibFunc::iprintf);
TLI.setUnavailable(LibFunc::siprintf);
TLI.setUnavailable(LibFunc::fiprintf);
}
}
TargetLibraryInfo::TargetLibraryInfo() : ImmutablePass(ID) {
// Default to everything being available.
memset(AvailableArray, -1, sizeof(AvailableArray));
initialize(*this, Triple());
}
TargetLibraryInfo::TargetLibraryInfo(const Triple &T) : ImmutablePass(ID) {
// Default to everything being available.
memset(AvailableArray, -1, sizeof(AvailableArray));
initialize(*this, T);
}
TargetLibraryInfo::TargetLibraryInfo(const TargetLibraryInfo &TLI)
: ImmutablePass(ID) {
memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray));
}
/// disableAllFunctions - This disables all builtins, which is used for options
/// like -fno-builtin.
void TargetLibraryInfo::disableAllFunctions() {
memset(AvailableArray, 0, sizeof(AvailableArray));
}
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