diff --git a/clang/lib/Driver/ToolChains/Linux.cpp b/clang/lib/Driver/ToolChains/Linux.cpp
--- a/clang/lib/Driver/ToolChains/Linux.cpp
+++ b/clang/lib/Driver/ToolChains/Linux.cpp
@@ -766,7 +766,7 @@
   if (IsX86_64 || IsMIPS64 || IsAArch64)
     Res |= SanitizerKind::DataFlow;
   if (IsX86_64 || IsMIPS64 || IsAArch64 || IsX86 || IsArmArch || IsPowerPC64 ||
-      IsRISCV64 || IsSystemZ || IsHexagon)
+      IsRISCV64 || IsSystemZ || IsHexagon || IsLoongArch64)
     Res |= SanitizerKind::Leak;
   if (IsX86_64 || IsMIPS64 || IsAArch64 || IsPowerPC64 || IsSystemZ ||
       IsLoongArch64)
diff --git a/clang/test/Driver/fsanitize.c b/clang/test/Driver/fsanitize.c
--- a/clang/test/Driver/fsanitize.c
+++ b/clang/test/Driver/fsanitize.c
@@ -430,6 +430,12 @@
 // RUN: %clang --target=riscv64-linux-gnu -fsanitize=address,leak -fno-sanitize=address %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SANA-SANL-NO-SANA-RISCV64
 // CHECK-SANA-SANL-NO-SANA-RISCV64: "-fsanitize=leak"
 
+// RUN: %clang --target=loongarch64-unknown-linux-gnu -fsanitize=leak %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SANL-LOONGARCH64
+// CHECK-SANL-LOONGARCH64: "-fsanitize=leak"
+
+// RUN: %clang --target=loongarch64-unknown-linux-gnu -fsanitize=address,leak -fno-sanitize=address %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SANA-SANL-NO-SANA-LOONGARCH64
+// CHECK-SANA-SANL-NO-SANA-LOONGARCH64: "-fsanitize=leak"
+
 // RUN: %clang --target=x86_64-linux-gnu -fsanitize=memory %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-MSAN
 // CHECK-MSAN: "-fno-assume-sane-operator-new"
 // RUN: %clang --target=x86_64-linux-gnu -fsanitize=address %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-ASAN
diff --git a/compiler-rt/cmake/Modules/AllSupportedArchDefs.cmake b/compiler-rt/cmake/Modules/AllSupportedArchDefs.cmake
--- a/compiler-rt/cmake/Modules/AllSupportedArchDefs.cmake
+++ b/compiler-rt/cmake/Modules/AllSupportedArchDefs.cmake
@@ -52,7 +52,7 @@
   set(ALL_LSAN_SUPPORTED_ARCH ${X86} ${X86_64} ${MIPS64} ${ARM64})
 else()
   set(ALL_LSAN_SUPPORTED_ARCH ${X86} ${X86_64} ${MIPS64} ${ARM64} ${ARM32}
-      ${PPC64} ${S390X} ${RISCV64} ${HEXAGON})
+      ${PPC64} ${S390X} ${RISCV64} ${HEXAGON} ${LOONGARCH64})
 endif()
 set(ALL_MSAN_SUPPORTED_ARCH ${X86_64} ${MIPS64} ${ARM64} ${PPC64} ${S390X})
 set(ALL_HWASAN_SUPPORTED_ARCH ${X86_64} ${ARM64} ${RISCV64})
diff --git a/compiler-rt/lib/lsan/lsan_common.h b/compiler-rt/lib/lsan/lsan_common.h
--- a/compiler-rt/lib/lsan/lsan_common.h
+++ b/compiler-rt/lib/lsan/lsan_common.h
@@ -43,6 +43,8 @@
 #  define CAN_SANITIZE_LEAKS 1
 #elif defined(__arm__) && SANITIZER_LINUX
 #  define CAN_SANITIZE_LEAKS 1
+#elif SANITIZER_LOONGARCH64 && SANITIZER_LINUX
+#  define CAN_SANITIZE_LEAKS 1
 #elif SANITIZER_RISCV64 && SANITIZER_LINUX
 #  define CAN_SANITIZE_LEAKS 1
 #elif SANITIZER_NETBSD || SANITIZER_FUCHSIA
diff --git a/compiler-rt/lib/lsan/lsan_common.cpp b/compiler-rt/lib/lsan/lsan_common.cpp
--- a/compiler-rt/lib/lsan/lsan_common.cpp
+++ b/compiler-rt/lib/lsan/lsan_common.cpp
@@ -277,6 +277,9 @@
 #  elif defined(__aarch64__)
   // Accept up to 48 bit VMA.
   return ((p >> 48) == 0);
+#  elif defined(__loongarch_lp64)
+  // Allow 47-bit user-space VMA at current.
+  return ((p >> 47) == 0);
 #  else
   return true;
 #  endif
diff --git a/compiler-rt/test/asan/lit.cfg.py b/compiler-rt/test/asan/lit.cfg.py
--- a/compiler-rt/test/asan/lit.cfg.py
+++ b/compiler-rt/test/asan/lit.cfg.py
@@ -202,7 +202,7 @@
 
 # Turn on leak detection on 64-bit Linux.
 leak_detection_android = config.android and 'android-thread-properties-api' in config.available_features and (config.target_arch in ['x86_64', 'i386', 'i686', 'aarch64'])
-leak_detection_linux = (config.host_os == 'Linux') and (not config.android) and (config.target_arch in ['x86_64', 'i386', 'riscv64'])
+leak_detection_linux = (config.host_os == 'Linux') and (not config.android) and (config.target_arch in ['x86_64', 'i386', 'riscv64', 'loongarch64'])
 leak_detection_mac = (config.host_os == 'Darwin') and (config.apple_platform == 'osx')
 leak_detection_netbsd = (config.host_os == 'NetBSD') and (config.target_arch in ['x86_64', 'i386'])
 if leak_detection_android or leak_detection_linux or leak_detection_mac or leak_detection_netbsd:
diff --git a/compiler-rt/test/lsan/TestCases/swapcontext.cpp b/compiler-rt/test/lsan/TestCases/swapcontext.cpp
--- a/compiler-rt/test/lsan/TestCases/swapcontext.cpp
+++ b/compiler-rt/test/lsan/TestCases/swapcontext.cpp
@@ -5,7 +5,7 @@
 // RUN: %env_lsan_opts= %run %t 2>&1
 // RUN: %env_lsan_opts= not %run %t foo 2>&1 | FileCheck %s
 // Missing 'getcontext' and 'makecontext' on Android.
-// UNSUPPORTED: target={{(arm|aarch64|powerpc64).*}},android
+// UNSUPPORTED: target={{(arm|aarch64|loongarch64|powerpc64).*}},android
 
 #include "sanitizer_common/sanitizer_ucontext.h"
 #include <stdio.h>
diff --git a/compiler-rt/test/lsan/TestCases/use_registers.cpp b/compiler-rt/test/lsan/TestCases/use_registers.cpp
--- a/compiler-rt/test/lsan/TestCases/use_registers.cpp
+++ b/compiler-rt/test/lsan/TestCases/use_registers.cpp
@@ -43,6 +43,8 @@
       "mov x14, %0"
       :
       : "r"(p));
+#elif defined(__loongarch_lp64)
+  asm("move $s8, %0" : : "r"(p));
 #elif defined(__powerpc__)
   asm("mr 30, %0"
       :
diff --git a/compiler-rt/test/lsan/lit.common.cfg.py b/compiler-rt/test/lsan/lit.common.cfg.py
--- a/compiler-rt/test/lsan/lit.common.cfg.py
+++ b/compiler-rt/test/lsan/lit.common.cfg.py
@@ -74,9 +74,9 @@
 config.substitutions.append( ("%clangxx_lsan ", build_invocation(clang_lsan_cxxflags)) )
 
 # LeakSanitizer tests are currently supported on
-# Android{aarch64, x86, x86_64}, x86-64 Linux, PowerPC64 Linux, arm Linux, mips64 Linux, s390x Linux and x86_64 Darwin.
+# Android{aarch64, x86, x86_64}, x86-64 Linux, PowerPC64 Linux, arm Linux, mips64 Linux, s390x Linux, loongarch64 Linux and x86_64 Darwin.
 supported_android = config.android and config.target_arch in ['x86_64', 'i386', 'aarch64'] and 'android-thread-properties-api' in config.available_features
-supported_linux = (not config.android) and config.host_os == 'Linux' and config.host_arch in ['aarch64', 'x86_64', 'ppc64', 'ppc64le', 'mips64', 'riscv64', 'arm', 'armhf', 'armv7l', 's390x']
+supported_linux = (not config.android) and config.host_os == 'Linux' and config.host_arch in ['aarch64', 'x86_64', 'ppc64', 'ppc64le', 'mips64', 'riscv64', 'arm', 'armhf', 'armv7l', 's390x', 'loongarch64']
 supported_darwin = config.host_os == 'Darwin' and config.target_arch in ['x86_64']
 supported_netbsd = config.host_os == 'NetBSD' and config.target_arch in ['x86_64', 'i386']
 if not (supported_android or supported_linux or supported_darwin or supported_netbsd):