diff options
Diffstat (limited to 'lib/Target/AArch64/AArch64Subtarget.cpp')
| -rw-r--r-- | lib/Target/AArch64/AArch64Subtarget.cpp | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/lib/Target/AArch64/AArch64Subtarget.cpp b/lib/Target/AArch64/AArch64Subtarget.cpp index b3aba4781db8..042755bd36d0 100644 --- a/lib/Target/AArch64/AArch64Subtarget.cpp +++ b/lib/Target/AArch64/AArch64Subtarget.cpp @@ -35,6 +35,11 @@ static cl::opt<bool> UseAddressTopByteIgnored("aarch64-use-tbi", cl::desc("Assume that top byte of " "an address is ignored"), cl::init(false), cl::Hidden); +static cl::opt<bool> + UseNonLazyBind("aarch64-enable-nonlazybind", + cl::desc("Call nonlazybind functions via direct GOT load"), + cl::init(false), cl::Hidden); + AArch64Subtarget & AArch64Subtarget::initializeSubtargetDependencies(StringRef FS, StringRef CPUString) { @@ -155,6 +160,23 @@ AArch64Subtarget::ClassifyGlobalReference(const GlobalValue *GV, return AArch64II::MO_NO_FLAG; } +unsigned char AArch64Subtarget::classifyGlobalFunctionReference( + const GlobalValue *GV, const TargetMachine &TM) const { + // MachO large model always goes via a GOT, because we don't have the + // relocations available to do anything else.. + if (TM.getCodeModel() == CodeModel::Large && isTargetMachO() && + !GV->hasInternalLinkage()) + return AArch64II::MO_GOT; + + // NonLazyBind goes via GOT unless we know it's available locally. + auto *F = dyn_cast<Function>(GV); + if (UseNonLazyBind && F && F->hasFnAttribute(Attribute::NonLazyBind) && + !TM.shouldAssumeDSOLocal(*GV->getParent(), GV)) + return AArch64II::MO_GOT; + + return AArch64II::MO_NO_FLAG; +} + /// This function returns the name of a function which has an interface /// like the non-standard bzero function, if such a function exists on /// the current subtarget and it is considered prefereable over |