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cd269fee05
This both reapplies #118734, the initial attempt at this, and updates it significantly. First, it uses the newly added `StringTable` abstraction for string tables, and simplifies the construction to build the string table and info arrays separately. This should reduce any `constexpr` compile time memory or CPU cost of the original PR while significantly improving the APIs throughout. It also restructures the builtins to support sharding across several independent tables. This accomplishes two improvements from the original PR: 1) It improves the APIs used significantly. 2) When builtins are defined from different sources (like SVE vs MVE in AArch64), this allows each of them to build their own string table independently rather than having to merge the string tables and info structures. 3) It allows each shard to factor out a common prefix, often cutting the size of the strings needed for the builtins by a factor two. The second point is important both to allow different mechanisms of construction (for example a `.def` file and a tablegen'ed `.inc` file, or different tablegen'ed `.inc files), it also simply reduces the sizes of these tables which is valuable given how large they are in some cases. The third builds on that size reduction. Initially, we use this new sharding rather than merging tables in AArch64, LoongArch, RISCV, and X86. Mostly this helps ensure the system works, as without further changes these still push scaling limits. Subsequent commits will more deeply leverage the new structure, including using the prefix capabilities which cannot be easily factored out here and requires deep changes to the targets.
110 lines
3.2 KiB
C++
110 lines
3.2 KiB
C++
//===--- CSKY.h - Declare CSKY target feature support -----------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file declares CSKY TargetInfo objects.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_LIB_BASIC_TARGETS_CSKY_H
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#define LLVM_CLANG_LIB_BASIC_TARGETS_CSKY_H
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#include "clang/Basic/MacroBuilder.h"
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#include "clang/Basic/TargetInfo.h"
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#include "llvm/TargetParser/CSKYTargetParser.h"
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namespace clang {
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namespace targets {
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class LLVM_LIBRARY_VISIBILITY CSKYTargetInfo : public TargetInfo {
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protected:
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std::string ABI;
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llvm::CSKY::ArchKind Arch = llvm::CSKY::ArchKind::INVALID;
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std::string CPU;
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bool HardFloat = false;
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bool HardFloatABI = false;
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bool FPUV2_SF = false;
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bool FPUV2_DF = false;
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bool FPUV3_SF = false;
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bool FPUV3_DF = false;
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bool VDSPV2 = false;
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bool VDSPV1 = false;
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bool DSPV2 = false;
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bool is3E3R1 = false;
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public:
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CSKYTargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
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: TargetInfo(Triple) {
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NoAsmVariants = true;
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LongLongAlign = 32;
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SuitableAlign = 32;
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DoubleAlign = LongDoubleAlign = 32;
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SizeType = UnsignedInt;
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PtrDiffType = SignedInt;
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IntPtrType = SignedInt;
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WCharType = SignedInt;
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WIntType = UnsignedInt;
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UseZeroLengthBitfieldAlignment = true;
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MaxAtomicPromoteWidth = MaxAtomicInlineWidth = 32;
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resetDataLayout("e-m:e-S32-p:32:32-i32:32:32-i64:32:32-f32:32:32-f64:32:32-"
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"v64:32:32-v128:32:32-a:0:32-Fi32-n32");
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setABI("abiv2");
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}
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StringRef getABI() const override { return ABI; }
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bool setABI(const std::string &Name) override {
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if (Name == "abiv2" || Name == "abiv1") {
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ABI = Name;
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return true;
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}
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return false;
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}
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bool setCPU(const std::string &Name) override;
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bool isValidCPUName(StringRef Name) const override;
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unsigned getMinGlobalAlign(uint64_t, bool HasNonWeakDef) const override;
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llvm::SmallVector<Builtin::InfosShard> getTargetBuiltins() const override {
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return {};
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}
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BuiltinVaListKind getBuiltinVaListKind() const override {
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return VoidPtrBuiltinVaList;
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}
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bool validateAsmConstraint(const char *&Name,
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TargetInfo::ConstraintInfo &info) const override;
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std::string_view getClobbers() const override { return ""; }
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void getTargetDefines(const LangOptions &Opts,
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MacroBuilder &Builder) const override;
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bool hasFeature(StringRef Feature) const override;
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bool handleTargetFeatures(std::vector<std::string> &Features,
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DiagnosticsEngine &Diags) override;
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/// Whether target allows to overalign ABI-specified preferred alignment
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bool allowsLargerPreferedTypeAlignment() const override { return false; }
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bool hasBitIntType() const override { return true; }
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protected:
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ArrayRef<const char *> getGCCRegNames() const override;
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ArrayRef<GCCRegAlias> getGCCRegAliases() const override;
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};
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} // namespace targets
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} // namespace clang
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#endif // LLVM_CLANG_LIB_BASIC_TARGETS_CSKY_H
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