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[AArch64] Add an SVE target feature to the backend and TargetParser. 

The feature will be used properly once assembler/disassembler support
begins to land.

llvm-svn: 307917
This commit is contained in:
Amara Emerson 2017-07-13 15:19:56 +00:00
parent c9dcaaae69
commit 9f3a245e76
7 changed files with 18 additions and 5 deletions
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5
llvm/include/llvm/Support/AArch64TargetParser.def
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@ -43,8 +43,9 @@ AARCH64_ARCH_EXT_NAME("crypto", AArch64::AEK_CRYPTO, "+crypto","-crypto")
AARCH64_ARCH_EXT_NAME("fp", AArch64::AEK_FP, "+fp-armv8", "-fp-armv8")
AARCH64_ARCH_EXT_NAME("simd", AArch64::AEK_SIMD, "+neon", "-neon")
AARCH64_ARCH_EXT_NAME("fp16", AArch64::AEK_FP16, "+fullfp16", "-fullfp16")
AARCH64_ARCH_EXT_NAME("profile", AArch64::AEK_PROFILE, "+spe", "-spe")
AARCH64_ARCH_EXT_NAME("ras", AArch64::AEK_RAS, "+ras", "-ras")
AARCH64_ARCH_EXT_NAME("profile", AArch64::AEK_PROFILE, "+spe", "-spe")
AARCH64_ARCH_EXT_NAME("ras", AArch64::AEK_RAS, "+ras", "-ras")
AARCH64_ARCH_EXT_NAME("sve", AArch64::AEK_SVE, "+sve", "-sve")
#undef AARCH64_ARCH_EXT_NAME
#ifndef AARCH64_CPU_NAME

4
llvm/include/llvm/Support/TargetParser.h
View File

@ -85,6 +85,7 @@ enum ArchExtKind : unsigned {
AEK_DSP = 0x400,
AEK_FP16 = 0x800,
AEK_RAS = 0x1000,
AEK_SVE = 0x2000,
// Unsupported extensions.
AEK_OS = 0x8000000,
AEK_IWMMXT = 0x10000000,
@ -166,7 +167,8 @@ enum ArchExtKind : unsigned {
AEK_FP16 = 0x20,
AEK_PROFILE = 0x40,
AEK_RAS = 0x80,
AEK_LSE = 0x100
AEK_LSE = 0x100,
AEK_SVE = 0x200
};
StringRef getCanonicalArchName(StringRef Arch);

2
llvm/lib/Support/TargetParser.cpp
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@ -452,6 +452,8 @@ bool llvm::AArch64::getExtensionFeatures(unsigned Extensions,
Features.push_back("+ras");
if (Extensions & AArch64::AEK_LSE)
Features.push_back("+lse");
if (Extensions & AArch64::AEK_SVE)
Features.push_back("+sve");
return true;
}

3
llvm/lib/Target/AArch64/AArch64.td
View File

@ -50,6 +50,9 @@ def FeatureFullFP16 : SubtargetFeature<"fullfp16", "HasFullFP16", "true",
def FeatureSPE : SubtargetFeature<"spe", "HasSPE", "true",
"Enable Statistical Profiling extension">;
def FeatureSVE : SubtargetFeature<"sve", "HasSVE", "true",
"Enable Scalable Vector Extension (SVE) instructions">;
/// Cyclone has register move instructions which are "free".
def FeatureZCRegMove : SubtargetFeature<"zcm", "HasZeroCycleRegMove", "true",
"Has zero-cycle register moves">;

2
llvm/lib/Target/AArch64/AArch64InstrInfo.td
View File

@ -37,6 +37,8 @@ def HasFullFP16 : Predicate<"Subtarget->hasFullFP16()">,
AssemblerPredicate<"FeatureFullFP16", "fullfp16">;
def HasSPE : Predicate<"Subtarget->hasSPE()">,
AssemblerPredicate<"FeatureSPE", "spe">;
def HasSVE : Predicate<"Subtarget->hasSVE()">,
AssemblerPredicate<"FeatureSVE", "sve">;
def IsLE : Predicate<"Subtarget->isLittleEndian()">;
def IsBE : Predicate<"!Subtarget->isLittleEndian()">;

2
llvm/lib/Target/AArch64/AArch64Subtarget.h
View File

@ -70,6 +70,7 @@ protected:
bool HasFullFP16 = false;
bool HasSPE = false;
bool HasLSLFast = false;
bool HasSVE = false;
// HasZeroCycleRegMove - Has zero-cycle register mov instructions.
bool HasZeroCycleRegMove = false;
@ -251,6 +252,7 @@ public:
bool hasFullFP16() const { return HasFullFP16; }
bool hasSPE() const { return HasSPE; }
bool hasLSLFast() const { return HasLSLFast; }
bool hasSVE() const { return HasSVE; }
bool isLittleEndian() const { return IsLittle; }

5
llvm/unittests/Support/TargetParserTest.cpp
View File

@ -737,7 +737,7 @@ TEST(TargetParserTest, AArch64ExtensionFeatures) {
unsigned Extensions = AArch64::AEK_CRC | AArch64::AEK_CRYPTO |
AArch64::AEK_FP | AArch64::AEK_SIMD |
AArch64::AEK_FP16 | AArch64::AEK_PROFILE |
AArch64::AEK_RAS;
AArch64::AEK_RAS | AArch64::AEK_SVE;
for (unsigned i = 0; i <= Extensions; i++)
EXPECT_TRUE(i == 0 ? !AArch64::getExtensionFeatures(i, Features)
@ -762,7 +762,8 @@ TEST(TargetParserTest, AArch64ArchExtFeature) {
{"simd", "nosimd", "+neon", "-neon"},
{"fp16", "nofp16", "+fullfp16", "-fullfp16"},
{"profile", "noprofile", "+spe", "-spe"},
{"ras", "noras", "+ras", "-ras"}};
{"ras", "noras", "+ras", "-ras"},
{"sve", "nosve", "+sve", "-sve"}};
for (unsigned i = 0; i < array_lengthof(ArchExt); i++) {
EXPECT_EQ(StringRef(ArchExt[i][2]),