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6a1c705057
The hardware div feature refers only to Thumb, but because of its name it is tempting to use it to check for hardware division in general, which may cause problems in ARM mode. See https://reviews.llvm.org/D32005. This patch adds "Thumb" to its name, to make its scope clear. One notable place where I haven't made the change is in the feature flag (used with -mattr), which is still hwdiv. Changing it would also require changes in a lot of tests, including clang tests, and it doesn't seem like it's worth the effort. Differential Revision: https://reviews.llvm.org/D32160 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@300827 91177308-0d34-0410-b5e6-96231b3b80d8
210 lines
6.1 KiB
C++
210 lines
6.1 KiB
C++
//===-- TargetParser - Parser for target features ---------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements a target parser to recognise hardware features such as
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// FPU/CPU/ARCH names as well as specific support such as HDIV, etc.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_SUPPORT_TARGETPARSER_H
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#define LLVM_SUPPORT_TARGETPARSER_H
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// FIXME: vector is used because that's what clang uses for subtarget feature
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// lists, but SmallVector would probably be better
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#include <vector>
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namespace llvm {
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class StringRef;
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// Target specific information into their own namespaces. These should be
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// generated from TableGen because the information is already there, and there
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// is where new information about targets will be added.
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// FIXME: To TableGen this we need to make some table generated files available
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// even if the back-end is not compiled with LLVM, plus we need to create a new
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// back-end to TableGen to create these clean tables.
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namespace ARM {
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// FPU names.
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enum FPUKind {
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#define ARM_FPU(NAME, KIND, VERSION, NEON_SUPPORT, RESTRICTION) KIND,
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#include "ARMTargetParser.def"
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FK_LAST
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};
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// FPU Version
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enum FPUVersion {
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FV_NONE = 0,
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FV_VFPV2,
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FV_VFPV3,
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FV_VFPV3_FP16,
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FV_VFPV4,
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FV_VFPV5
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};
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// An FPU name implies one of three levels of Neon support:
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enum NeonSupportLevel {
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NS_None = 0, ///< No Neon
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NS_Neon, ///< Neon
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NS_Crypto ///< Neon with Crypto
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};
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// An FPU name restricts the FPU in one of three ways:
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enum FPURestriction {
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FR_None = 0, ///< No restriction
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FR_D16, ///< Only 16 D registers
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FR_SP_D16 ///< Only single-precision instructions, with 16 D registers
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};
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// Arch names.
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enum ArchKind {
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#define ARM_ARCH(NAME, ID, CPU_ATTR, SUB_ARCH, ARCH_ATTR, ARCH_FPU, ARCH_BASE_EXT) ID,
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#include "ARMTargetParser.def"
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AK_LAST
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};
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// Arch extension modifiers for CPUs.
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enum ArchExtKind : unsigned {
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AEK_INVALID = 0x0,
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AEK_NONE = 0x1,
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AEK_CRC = 0x2,
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AEK_CRYPTO = 0x4,
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AEK_FP = 0x8,
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AEK_HWDIVTHUMB = 0x10,
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AEK_HWDIVARM = 0x20,
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AEK_MP = 0x40,
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AEK_SIMD = 0x80,
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AEK_SEC = 0x100,
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AEK_VIRT = 0x200,
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AEK_DSP = 0x400,
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AEK_FP16 = 0x800,
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AEK_RAS = 0x1000,
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// Unsupported extensions.
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AEK_OS = 0x8000000,
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AEK_IWMMXT = 0x10000000,
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AEK_IWMMXT2 = 0x20000000,
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AEK_MAVERICK = 0x40000000,
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AEK_XSCALE = 0x80000000,
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};
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// ISA kinds.
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enum ISAKind { IK_INVALID = 0, IK_ARM, IK_THUMB, IK_AARCH64 };
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// Endianness
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// FIXME: BE8 vs. BE32?
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enum EndianKind { EK_INVALID = 0, EK_LITTLE, EK_BIG };
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// v6/v7/v8 Profile
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enum ProfileKind { PK_INVALID = 0, PK_A, PK_R, PK_M };
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StringRef getCanonicalArchName(StringRef Arch);
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// Information by ID
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StringRef getFPUName(unsigned FPUKind);
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unsigned getFPUVersion(unsigned FPUKind);
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unsigned getFPUNeonSupportLevel(unsigned FPUKind);
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unsigned getFPURestriction(unsigned FPUKind);
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// FIXME: These should be moved to TargetTuple once it exists
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bool getFPUFeatures(unsigned FPUKind, std::vector<StringRef> &Features);
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bool getHWDivFeatures(unsigned HWDivKind, std::vector<StringRef> &Features);
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bool getExtensionFeatures(unsigned Extensions,
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std::vector<StringRef> &Features);
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StringRef getArchName(unsigned ArchKind);
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unsigned getArchAttr(unsigned ArchKind);
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StringRef getCPUAttr(unsigned ArchKind);
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StringRef getSubArch(unsigned ArchKind);
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StringRef getArchExtName(unsigned ArchExtKind);
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StringRef getArchExtFeature(StringRef ArchExt);
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StringRef getHWDivName(unsigned HWDivKind);
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// Information by Name
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unsigned getDefaultFPU(StringRef CPU, unsigned ArchKind);
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unsigned getDefaultExtensions(StringRef CPU, unsigned ArchKind);
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StringRef getDefaultCPU(StringRef Arch);
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// Parser
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unsigned parseHWDiv(StringRef HWDiv);
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unsigned parseFPU(StringRef FPU);
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unsigned parseArch(StringRef Arch);
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unsigned parseArchExt(StringRef ArchExt);
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unsigned parseCPUArch(StringRef CPU);
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unsigned parseArchISA(StringRef Arch);
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unsigned parseArchEndian(StringRef Arch);
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unsigned parseArchProfile(StringRef Arch);
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unsigned parseArchVersion(StringRef Arch);
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} // namespace ARM
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// FIXME:This should be made into class design,to avoid dupplication.
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namespace AArch64 {
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// Arch names.
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enum class ArchKind {
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#define AARCH64_ARCH(NAME, ID, CPU_ATTR, SUB_ARCH, ARCH_ATTR, ARCH_FPU, ARCH_BASE_EXT) ID,
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#include "AArch64TargetParser.def"
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AK_LAST
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};
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// Arch extension modifiers for CPUs.
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enum ArchExtKind : unsigned {
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AEK_INVALID = 0x0,
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AEK_NONE = 0x1,
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AEK_CRC = 0x2,
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AEK_CRYPTO = 0x4,
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AEK_FP = 0x8,
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AEK_SIMD = 0x10,
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AEK_FP16 = 0x20,
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AEK_PROFILE = 0x40,
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AEK_RAS = 0x80,
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AEK_LSE = 0x100
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};
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StringRef getCanonicalArchName(StringRef Arch);
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// Information by ID
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StringRef getFPUName(unsigned FPUKind);
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unsigned getFPUVersion(unsigned FPUKind);
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unsigned getFPUNeonSupportLevel(unsigned FPUKind);
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unsigned getFPURestriction(unsigned FPUKind);
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// FIXME: These should be moved to TargetTuple once it exists
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bool getFPUFeatures(unsigned FPUKind, std::vector<StringRef> &Features);
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bool getExtensionFeatures(unsigned Extensions,
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std::vector<StringRef> &Features);
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bool getArchFeatures(unsigned ArchKind, std::vector<StringRef> &Features);
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StringRef getArchName(unsigned ArchKind);
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unsigned getArchAttr(unsigned ArchKind);
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StringRef getCPUAttr(unsigned ArchKind);
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StringRef getSubArch(unsigned ArchKind);
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StringRef getArchExtName(unsigned ArchExtKind);
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StringRef getArchExtFeature(StringRef ArchExt);
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unsigned checkArchVersion(StringRef Arch);
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// Information by Name
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unsigned getDefaultFPU(StringRef CPU, unsigned ArchKind);
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unsigned getDefaultExtensions(StringRef CPU, unsigned ArchKind);
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StringRef getDefaultCPU(StringRef Arch);
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// Parser
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unsigned parseFPU(StringRef FPU);
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unsigned parseArch(StringRef Arch);
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unsigned parseArchExt(StringRef ArchExt);
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unsigned parseCPUArch(StringRef CPU);
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unsigned parseArchISA(StringRef Arch);
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unsigned parseArchEndian(StringRef Arch);
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unsigned parseArchProfile(StringRef Arch);
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unsigned parseArchVersion(StringRef Arch);
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} // namespace AArch64
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} // namespace llvm
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#endif
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