1 //===-- AArch64TargetParser - Parser for AArch64 features -------*- C++ -*-===//
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //===----------------------------------------------------------------------===//
10 // such as FPU/CPU/ARCH and extension names.
12 //===----------------------------------------------------------------------===//
23 #define DEBUG_TYPE "target-parser"
32     return (Arch[1] - 48);  in checkArchVersion()
36 const AArch64::ArchInfo *AArch64::getArchForCpu(StringRef CPU) {  in getArchForCpu()  argument
37   // Note: this now takes cpu aliases into account  in getArchForCpu()
38   std::optional<CpuInfo> Cpu = parseCpu(CPU);  in getArchForCpu()  local
39   if (!Cpu)  in getArchForCpu()
41   return &Cpu->Arch;  in getArchForCpu()
46     if (A->getSubArch() == SubArch)  in findBySubArch()
55       FeaturesMask |= (1ULL << Ext->Bit);  in getCpuSupportsMask()
65     if (InputExts.test(E.ID) && !E.PosTargetFeature.empty())  in getExtensionFeatures()
83     assert(!(AE.has_value() && AE->NegTargetFeature.empty()));  in getArchExtFeature()
84     return IsNegated ? AE->NegTargetFeature : AE->PosTargetFeature;  in getArchExtFeature()
95     // The apple-latest alias is backend only, do not expose it to clang's -mcpu.  in fillValidCPUArchList()
96     if (Alias.AltName != "apple-latest")  in fillValidCPUArchList()
115     if (A->Name.ends_with(Syn))  in parseArch()
156   // Then find the CPU name.  in parseCpu()
165   outs() << "All available -march extensions for AArch64\n\n"  in PrintSupportedExtensions()
170     // Extensions without a feature cannot be used with -march.  in PrintSupportedExtensions()
173              << format(Ext.Description.empty() ? "%-20s%s\n" : "%-20s%-55s%s\n",  in PrintSupportedExtensions()
200            << format("%-55s%s\n",  in printEnabledExtensions()
215   if (Enabled.test(E))  in enable()
233     // +fp16 implies +fp16fml for v8.4A+, but not v9.0-A+  in enable()
234     if (E == AEK_FP16 && BaseArch->is_superset(ARMV8_4A) &&  in enable()
235         !BaseArch->is_superset(ARMV9A))  in enable()
239     if (E == AEK_CRYPTO && BaseArch->is_superset(ARMV8_4A)) {  in enable()
247   // -crypto always disables aes, sha2, sha3 and sm4, even for architectures  in disable()
256   if (!Enabled.test(E))  in disable()
270 void AArch64::ExtensionSet::addCPUDefaults(const CpuInfo &CPU) {  in addCPUDefaults()  argument
271   LLVM_DEBUG(llvm::dbgs() << "addCPUDefaults(" << CPU.Name << ")\n");  in addCPUDefaults()
272   BaseArch = &CPU.Arch;  in addCPUDefaults()
274   AArch64::ExtensionBitset CPUExtensions = CPU.getImpliedExtensions();  in addCPUDefaults()
276     if (CPUExtensions.test(E.ID))  in addCPUDefaults()
285     if (Arch.DefaultExts.test(E.ID))  in addArchDefaults()
294   // The "no-feat" form is allowed in the target attribute but nowhere else.  in parseModifier()
295   if (AllowNoDashForm && Modifier.starts_with("no-"))  in parseModifier()
303     if (AE->PosTargetFeature.empty() || AE->NegTargetFeature.empty())  in parseModifier()
306       disable(AE->ID);  in parseModifier()
308       enable(AE->ID);  in parseModifier()
319     bool IsNegated = F[0] == '-';  in reconstructFromParsedFeatures()
321       Touched.set(AE->ID);  in reconstructFromParsedFeatures()
323         Enabled.reset(AE->ID);  in reconstructFromParsedFeatures()
325         Enabled.set(AE->ID);  in reconstructFromParsedFeatures()