[scudo] Add loongarch64 support for scudo

[tangyouling]

Summary

Enable scudo on LoongArch64 on both clang side and compiler-rt side.

[SixWeining]

LGTM. Thanks.

clang/lib/Driver/ToolChains/Linux.cpp

SanitizerMask Linux::getSupportedSanitizers() const {
   const bool IsPowerPC64 = getTriple().getArch() == llvm::Triple::ppc64 ||
                            getTriple().getArch() == llvm::Triple::ppc64le;
   const bool IsAArch64 = getTriple().getArch() == llvm::Triple::aarch64 ||
                          getTriple().getArch() == llvm::Triple::aarch64_be;
   const bool IsArmArch = getTriple().getArch() == llvm::Triple::arm ||
                          getTriple().getArch() == llvm::Triple::thumb ||
                          getTriple().getArch() == llvm::Triple::armeb ||
                          getTriple().getArch() == llvm::Triple::thumbeb;
+  const bool IsLoongArch64 = getTriple().getArch() == llvm::Triple::loongarch64;
   const bool IsRISCV64 = getTriple().getArch() == llvm::Triple::riscv64;
   const bool IsSystemZ = getTriple().getArch() == llvm::Triple::systemz;
   const bool IsHexagon = getTriple().getArch() == llvm::Triple::hexagon;
   SanitizerMask Res = ToolChain::getSupportedSanitizers();
   Res |= SanitizerKind::Address;
   Res |= SanitizerKind::PointerCompare;
   Res |= SanitizerKind::PointerSubtract;
   Res |= SanitizerKind::Fuzzer;
if (IsX86_64 || IsMIPS64 || IsAArch64 || IsX86 || IsArmArch || IsPowerPC64 ||
     Res |= SanitizerKind::Leak;
   if (IsX86_64 || IsMIPS64 || IsAArch64 || IsPowerPC64 || IsSystemZ)
     Res |= SanitizerKind::Thread;
   if (IsX86_64)
     Res |= SanitizerKind::KernelMemory;
   if (IsX86 || IsX86_64)
     Res |= SanitizerKind::Function;
   if (IsX86_64 || IsMIPS64 || IsAArch64 || IsX86 || IsMIPS || IsArmArch ||
-      IsPowerPC64 || IsHexagon)
+      IsPowerPC64 || IsHexagon || IsLoongArch64)
     Res |= SanitizerKind::Scudo;
   if (IsX86_64 || IsAArch64) {
     Res |= SanitizerKind::HWAddress;
     Res |= SanitizerKind::KernelHWAddress;
   }
   return Res;
 }
 

clang/test/Driver/fsanitize.c

 // RUN: %clang --target=aarch64 -fsanitize=shadow-call-stack -ffixed-x18 %s -### 2>&1 | FileCheck %s --check-prefix=AARCH64-SCS
 // RUN: %clang --target=aarch64_be -fsanitize=shadow-call-stack -ffixed-x18 %s -### 2>&1 | FileCheck %s --check-prefix=AARCH64-SCS
 // AARCH64-SCS: "-fsanitize=shadow-call-stack"
 
 // RUN: %clang --target=aarch64-linux-gnu -fsanitize=scudo %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SCUDO
 // RUN: %clang --target=arm-linux-androideabi -fsanitize=scudo %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SCUDO
 // RUN: %clang --target=x86_64-linux-gnu -fsanitize=scudo %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SCUDO
 // RUN: %clang --target=i386-linux-gnu -fsanitize=scudo %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SCUDO
+// RUN: %clang --target=loongarch64-unknown-linux-gnu -fsanitize=scudo %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SCUDO
 // RUN: %clang --target=mips64-unknown-linux-gnu -fsanitize=scudo %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SCUDO
 // RUN: %clang --target=mips64el-unknown-linux-gnu -fsanitize=scudo %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SCUDO
 // RUN: %clang --target=mips-unknown-linux-gnu -fsanitize=scudo %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SCUDO
 // RUN: %clang --target=mipsel-unknown-linux-gnu -fsanitize=scudo %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SCUDO
 // RUN: %clang --target=powerpc64-unknown-linux -fsanitize=scudo %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SCUDO
 // RUN: %clang --target=powerpc64le-unknown-linux -fsanitize=scudo %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SCUDO
 // CHECK-SCUDO: "-fsanitize=scudo"
 

compiler-rt/cmake/Modules/AllSupportedArchDefs.cmake

 set(ALL_TSAN_SUPPORTED_ARCH ${X86_64} ${MIPS64} ${ARM64} ${PPC64} ${S390X})
 set(ALL_UBSAN_SUPPORTED_ARCH ${X86} ${X86_64} ${ARM32} ${ARM64} ${RISCV64}
     ${MIPS32} ${MIPS64} ${PPC64} ${S390X} ${SPARC} ${SPARCV9} ${HEXAGON})
 set(ALL_SAFESTACK_SUPPORTED_ARCH ${X86} ${X86_64} ${ARM64} ${MIPS32} ${MIPS64}
     ${HEXAGON})
 set(ALL_CFI_SUPPORTED_ARCH ${X86} ${X86_64} ${ARM32} ${ARM64} ${MIPS64}
     ${HEXAGON})
 set(ALL_SCUDO_SUPPORTED_ARCH ${X86} ${X86_64} ${ARM32} ${ARM64} ${MIPS32}
-    ${MIPS64} ${PPC64} ${HEXAGON})
+    ${MIPS64} ${PPC64} ${HEXAGON} ${LOONGARCH64})
 set(ALL_SCUDO_STANDALONE_SUPPORTED_ARCH ${X86} ${X86_64} ${ARM32} ${ARM64}
-    ${MIPS32} ${MIPS64} ${PPC64} ${HEXAGON})
+    ${MIPS32} ${MIPS64} ${PPC64} ${HEXAGON} ${LOONGARCH64})
 if(APPLE)
 set(ALL_XRAY_SUPPORTED_ARCH ${X86_64})
 else()
 set(ALL_XRAY_SUPPORTED_ARCH ${X86_64} ${ARM32} ${ARM64} ${MIPS32} ${MIPS64}
     powerpc64le ${HEXAGON})
 endif()
 set(ALL_SHADOWCALLSTACK_SUPPORTED_ARCH ${ARM64})
 
 if (UNIX)
 set(ALL_ORC_SUPPORTED_ARCH ${X86_64} ${ARM64} ${ARM32})
 endif()
 
 if (WIN32)
   set(ALL_ORC_SUPPORTED_ARCH ${X86_64})
 endif()