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SixWeiningrengolin
SixWeining
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rengolin
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[LoongArch 1/6] Add triples loongarch{32,64} for the upcoming LoongArch target
This is the first patch to incrementally add an MC layer for LoongArch to LLVM. This patch also adds unit testcases for these new triples. RFC for adding this new backend: https://lists.llvm.org/pipermail/llvm-dev/2021-December/154371.html Differential revision: https://reviews.llvm.org/D115857
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‎llvm/CODE_OWNERS.TXT

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@@ -153,6 +153,10 @@ E: sabre@nondot.org
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W: http://nondot.org/~sabre/
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D: Everything not covered by someone else
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N: Weining Lu
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E: luweining@loongson.cn
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D: LoongArch backend (lib/Target/LoongArch/*)
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N: David Majnemer
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E: david.majnemer@gmail.com
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D: IR Constant Folder, InstCombine

‎llvm/docs/CompilerWriterInfo.rst

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@@ -107,6 +107,11 @@ C-SKY
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* `C-SKY Architecture User Guide <https://github.com/c-sky/csky-doc/blob/master/CSKY%20Architecture%20user_guide.pdf>`_
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* `C-SKY V2 ABI <https://github.com/c-sky/csky-doc/blob/master/C-SKY_V2_CPU_Applications_Binary_Interface_Standards_Manual.pdf>`_
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LoongArch
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---------
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* `LoongArch Reference Manual - Volume 1: Basic Architecture <https://loongson.github.io/LoongArch-Documentation/LoongArch-Vol1-EN.html>`_
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* `LoongArch ELF ABI specification <https://loongson.github.io/LoongArch-Documentation/LoongArch-ELF-ABI-EN.html>`_
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SPARC
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-----
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‎llvm/include/llvm/ADT/Triple.h

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@@ -57,6 +57,8 @@ class Triple {
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bpfeb, // eBPF or extended BPF or 64-bit BPF (big endian)
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csky, // CSKY: csky
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hexagon, // Hexagon: hexagon
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loongarch32, // LoongArch (32-bit): loongarch32
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loongarch64, // LoongArch (64-bit): loongarch64
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m68k, // M68k: Motorola 680x0 family
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mips, // MIPS: mips, mipsallegrex, mipsr6
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mipsel, // MIPSEL: mipsel, mipsallegrexe, mipsr6el
@@ -774,6 +776,11 @@ class Triple {
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: PointerWidth == 64;
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}
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/// Tests whether the target is LoongArch (32- and 64-bit).
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bool isLoongArch() const {
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return getArch() == Triple::loongarch32 || getArch() == Triple::loongarch64;
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}
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/// Tests whether the target is MIPS 32-bit (little and big endian).
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bool isMIPS32() const {
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return getArch() == Triple::mips || getArch() == Triple::mipsel;

‎llvm/lib/Support/Triple.cpp

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@@ -44,6 +44,8 @@ StringRef Triple::getArchTypeName(ArchType Kind) {
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case lanai: return "lanai";
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case le32: return "le32";
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case le64: return "le64";
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case loongarch32: return "loongarch32";
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case loongarch64: return "loongarch64";
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case m68k: return "m68k";
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case mips64: return "mips64";
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case mips64el: return "mips64el";
@@ -164,6 +166,9 @@ StringRef Triple::getArchTypePrefix(ArchType Kind) {
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case ve: return "ve";
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case csky: return "csky";
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case loongarch32:
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case loongarch64: return "loongarch";
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}
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}
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@@ -340,6 +345,8 @@ Triple::ArchType Triple::getArchTypeForLLVMName(StringRef Name) {
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.Case("renderscript64", renderscript64)
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.Case("ve", ve)
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.Case("csky", csky)
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.Case("loongarch32", loongarch32)
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.Case("loongarch64", loongarch64)
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.Default(UnknownArch);
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}
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@@ -475,6 +482,8 @@ static Triple::ArchType parseArch(StringRef ArchName) {
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.Case("wasm32", Triple::wasm32)
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.Case("wasm64", Triple::wasm64)
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.Case("csky", Triple::csky)
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.Case("loongarch32", Triple::loongarch32)
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.Case("loongarch64", Triple::loongarch64)
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.Default(Triple::UnknownArch);
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// Some architectures require special parsing logic just to compute the
@@ -731,6 +740,8 @@ static Triple::ObjectFormatType getDefaultFormat(const Triple &T) {
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case Triple::lanai:
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case Triple::le32:
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case Triple::le64:
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case Triple::loongarch32:
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case Triple::loongarch64:
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case Triple::m68k:
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case Triple::mips64:
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case Triple::mips64el:
@@ -1290,6 +1301,7 @@ static unsigned getArchPointerBitWidth(llvm::Triple::ArchType Arch) {
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case llvm::Triple::kalimba:
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case llvm::Triple::lanai:
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case llvm::Triple::le32:
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case llvm::Triple::loongarch32:
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case llvm::Triple::m68k:
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case llvm::Triple::mips:
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case llvm::Triple::mipsel:
@@ -1321,6 +1333,7 @@ static unsigned getArchPointerBitWidth(llvm::Triple::ArchType Arch) {
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case llvm::Triple::bpfel:
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case llvm::Triple::hsail64:
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case llvm::Triple::le64:
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case llvm::Triple::loongarch64:
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case llvm::Triple::mips64:
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case llvm::Triple::mips64el:
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case llvm::Triple::nvptx64:
@@ -1377,6 +1390,7 @@ Triple Triple::get32BitArchVariant() const {
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case Triple::kalimba:
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case Triple::lanai:
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case Triple::le32:
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case Triple::loongarch32:
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case Triple::m68k:
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case Triple::mips:
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case Triple::mipsel:
@@ -1406,6 +1420,7 @@ Triple Triple::get32BitArchVariant() const {
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case Triple::amdil64: T.setArch(Triple::amdil); break;
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case Triple::hsail64: T.setArch(Triple::hsail); break;
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case Triple::le64: T.setArch(Triple::le32); break;
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case Triple::loongarch64: T.setArch(Triple::loongarch32); break;
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case Triple::mips64:
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T.setArch(Triple::mips, getSubArch());
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break;
@@ -1455,6 +1470,7 @@ Triple Triple::get64BitArchVariant() const {
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case Triple::bpfel:
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case Triple::hsail64:
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case Triple::le64:
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case Triple::loongarch64:
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case Triple::mips64:
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case Triple::mips64el:
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case Triple::nvptx64:
@@ -1478,6 +1494,7 @@ Triple Triple::get64BitArchVariant() const {
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case Triple::armeb: T.setArch(Triple::aarch64_be); break;
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case Triple::hsail: T.setArch(Triple::hsail64); break;
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case Triple::le32: T.setArch(Triple::le64); break;
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case Triple::loongarch32: T.setArch(Triple::loongarch64); break;
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case Triple::mips:
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T.setArch(Triple::mips64, getSubArch());
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break;
@@ -1517,6 +1534,8 @@ Triple Triple::getBigEndianArchVariant() const {
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case Triple::kalimba:
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case Triple::le32:
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case Triple::le64:
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case Triple::loongarch32:
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case Triple::loongarch64:
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case Triple::msp430:
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case Triple::nvptx64:
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case Triple::nvptx:
@@ -1617,6 +1636,8 @@ bool Triple::isLittleEndian() const {
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case Triple::kalimba:
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case Triple::le32:
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case Triple::le64:
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case Triple::loongarch32:
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case Triple::loongarch64:
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case Triple::mips64el:
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case Triple::mipsel:
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case Triple::msp430:

‎llvm/unittests/ADT/TripleTest.cpp

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@@ -354,6 +354,18 @@ TEST(TripleTest, ParsedIDs) {
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EXPECT_EQ(Triple::Linux, T.getOS());
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EXPECT_EQ(Triple::UnknownEnvironment, T.getEnvironment());
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T = Triple("loongarch32-unknown-unknown");
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EXPECT_EQ(Triple::loongarch32, T.getArch());
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EXPECT_EQ(Triple::UnknownVendor, T.getVendor());
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EXPECT_EQ(Triple::UnknownOS, T.getOS());
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EXPECT_EQ(Triple::UnknownEnvironment, T.getEnvironment());
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T = Triple("loongarch64-unknown-linux");
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EXPECT_EQ(Triple::loongarch64, T.getArch());
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EXPECT_EQ(Triple::UnknownVendor, T.getVendor());
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EXPECT_EQ(Triple::Linux, T.getOS());
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EXPECT_EQ(Triple::UnknownEnvironment, T.getEnvironment());
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T = Triple("riscv32-unknown-unknown");
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EXPECT_EQ(Triple::riscv32, T.getArch());
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EXPECT_EQ(Triple::UnknownVendor, T.getVendor());
@@ -949,6 +961,18 @@ TEST(TripleTest, BitWidthPredicates) {
949961
EXPECT_TRUE(T.isArch32Bit());
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EXPECT_FALSE(T.isArch64Bit());
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EXPECT_TRUE(T.isCSKY());
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T.setArch(Triple::loongarch32);
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EXPECT_FALSE(T.isArch16Bit());
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EXPECT_TRUE(T.isArch32Bit());
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EXPECT_FALSE(T.isArch64Bit());
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EXPECT_TRUE(T.isLoongArch());
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T.setArch(Triple::loongarch64);
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EXPECT_FALSE(T.isArch16Bit());
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EXPECT_FALSE(T.isArch32Bit());
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EXPECT_TRUE(T.isArch64Bit());
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EXPECT_TRUE(T.isLoongArch());
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}
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TEST(TripleTest, BitWidthArchVariants) {
@@ -1092,6 +1116,14 @@ TEST(TripleTest, BitWidthArchVariants) {
10921116
EXPECT_EQ(Triple::csky, T.get32BitArchVariant().getArch());
10931117
EXPECT_EQ(Triple::UnknownArch, T.get64BitArchVariant().getArch());
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T.setArch(Triple::loongarch32);
1120+
EXPECT_EQ(Triple::loongarch32, T.get32BitArchVariant().getArch());
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EXPECT_EQ(Triple::loongarch64, T.get64BitArchVariant().getArch());
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1123+
T.setArch(Triple::loongarch64);
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EXPECT_EQ(Triple::loongarch32, T.get32BitArchVariant().getArch());
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EXPECT_EQ(Triple::loongarch64, T.get64BitArchVariant().getArch());
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T.setArch(Triple::thumbeb);
10961128
EXPECT_EQ(Triple::thumbeb, T.get32BitArchVariant().getArch());
10971129
EXPECT_EQ(Triple::aarch64_be, T.get64BitArchVariant().getArch());
@@ -1269,6 +1301,16 @@ TEST(TripleTest, EndianArchVariants) {
12691301
T.setArch(Triple::csky);
12701302
EXPECT_EQ(Triple::UnknownArch, T.getBigEndianArchVariant().getArch());
12711303
EXPECT_EQ(Triple::csky, T.getLittleEndianArchVariant().getArch());
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T.setArch(Triple::loongarch32);
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EXPECT_TRUE(T.isLittleEndian());
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EXPECT_EQ(Triple::UnknownArch, T.getBigEndianArchVariant().getArch());
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EXPECT_EQ(Triple::loongarch32, T.getLittleEndianArchVariant().getArch());
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T.setArch(Triple::loongarch64);
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EXPECT_TRUE(T.isLittleEndian());
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EXPECT_EQ(Triple::UnknownArch, T.getBigEndianArchVariant().getArch());
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EXPECT_EQ(Triple::loongarch64, T.getLittleEndianArchVariant().getArch());
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}
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TEST(TripleTest, getOSVersion) {
@@ -1485,6 +1527,10 @@ TEST(TripleTest, FileFormat) {
14851527
EXPECT_EQ(Triple::ELF, Triple("csky-unknown-unknown").getObjectFormat());
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EXPECT_EQ(Triple::ELF, Triple("csky-unknown-linux").getObjectFormat());
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1530+
EXPECT_EQ(Triple::ELF,
1531+
Triple("loongarch32-unknown-unknown").getObjectFormat());
1532+
EXPECT_EQ(Triple::ELF, Triple("loongarch64-unknown-linux").getObjectFormat());
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Triple MSVCNormalized(Triple::normalize("i686-pc-windows-msvc-elf"));
14891535
EXPECT_EQ(Triple::ELF, MSVCNormalized.getObjectFormat());
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