diff --git a/gcc/config.gcc b/gcc/config.gcc
index ee46d96bf62..782d933b497 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -480,6 +480,7 @@ mips*-*-*)
  	;;
  loongarch*-*-*)
  	cpu_type=loongarch
+	d_target_objs="loongarch-d.o"
  	extra_headers="larchintrin.h lsxintrin.h lasxintrin.h"
  	extra_objs="loongarch-c.o loongarch-builtins.o loongarch-cpu.o 
loongarch-opts.o loongarch-def.o"
  	extra_gcc_objs="loongarch-driver.o loongarch-cpu.o loongarch-opts.o 
loongarch-def.o"
diff --git a/gcc/config/loongarch/loongarch-d.cc 
b/gcc/config/loongarch/loongarch-d.cc
new file mode 100644
index 00000000000..d7875079212
--- /dev/null
+++ b/gcc/config/loongarch/loongarch-d.cc
@@ -0,0 +1,82 @@
+/* Subroutines for the D front end on the LoongArch architecture.
+   Copyright (C) 2017-2023 Free Software Foundation, Inc.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+#define IN_TARGET_CODE 1
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "tm_d.h"
+#include "d/d-target.h"
+#include "d/d-target-def.h"
+
+/* Implement TARGET_D_CPU_VERSIONS for LoongArch targets.  */
+
+void
+loongarch_d_target_versions (void)
+{
+  if (TARGET_64BIT)
+    d_add_builtin_version ("LoongArch64");
+  else
+    d_add_builtin_version ("LoongArch32");
+
+  if (TARGET_ABI_LP64)
+    d_add_builtin_version ("D_LP64");
+  else
+    d_add_builtin_version ("D_LP32");
+
+  if (TARGET_HARD_FLOAT_ABI)
+    {
+      d_add_builtin_version ("LoongArch_HardFloat");
+      d_add_builtin_version ("D_HardFloat");
+    }
+  else if (TARGET_SOFT_FLOAT_ABI)
+    {
+      d_add_builtin_version ("LoongArch_SoftFloat");
+      d_add_builtin_version ("D_SoftFloat");
+    }
+}
+
+/* Handle a call to `__traits(getTargetInfo, "floatAbi")'.  */
+
+static tree
+loongarch_d_handle_target_float_abi (void)
+{
+  const char *abi;
+
+  if (TARGET_HARD_FLOAT_ABI)
+    abi = "hard";
+  else if (TARGET_SOFT_FLOAT_ABI)
+    abi = "soft";
+  else
+    abi = "";
+
+  return build_string_literal (strlen (abi) + 1, abi);
+}
+
+/* Implement TARGET_D_REGISTER_CPU_TARGET_INFO.  */
+
+void
+loongarch_d_register_target_info (void)
+{
+  const struct d_target_info_spec handlers[] = {
+    {"floatAbi", loongarch_d_handle_target_float_abi},
+    {NULL, NULL},
+  };
+
+  d_add_target_info_handlers (handlers);
+}
diff --git a/gcc/config/loongarch/loongarch-d.h 
b/gcc/config/loongarch/loongarch-d.h
new file mode 100644
index 00000000000..5ef7bdfa9a0
--- /dev/null
+++ b/gcc/config/loongarch/loongarch-d.h
@@ -0,0 +1,26 @@
+/* Definitions for the D front end on the LoongArch architecture.
+   Copyright (C) 2022-2023 Free Software Foundation, Inc.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+/* Defined in loongarch-d.cc  */
+extern void
+loongarch_d_target_versions (void);
+extern void
+loongarch_d_register_target_info (void);
+
+/* Target hooks for D language.  */
+#define TARGET_D_CPU_VERSIONS loongarch_d_target_versions
+#define TARGET_D_REGISTER_CPU_TARGET_INFO loongarch_d_register_target_info
diff --git a/gcc/config/loongarch/t-loongarch 
b/gcc/config/loongarch/t-loongarch
index 9b06fa84bcc..a67af95bf66 100644
--- a/gcc/config/loongarch/t-loongarch
+++ b/gcc/config/loongarch/t-loongarch
@@ -63,6 +63,10 @@ loongarch-cpu.o: 
$(srcdir)/config/loongarch/loongarch-cpu.cc $(LA_STR_H)
  loongarch-def.o: $(srcdir)/config/loongarch/loongarch-def.c $(LA_STR_H)
  	$(CC) -c $(ALL_CFLAGS) $(INCLUDES) $<
  +loongarch-d.o: $(srcdir)/config/loongarch/loongarch-d.cc
+	$(COMPILE) $<
+	$(POSTCOMPILE)
+
  $(srcdir)/config/loongarch/loongarch.opt: s-loongarch-opt ; @true
  s-loongarch-opt: $(srcdir)/config/loongarch/genopts/genstr.sh \
  	$(srcdir)/config/loongarch/genopts/loongarch.opt.in \
diff --git a/gcc/testsuite/gdc.test/fail_compilation/reserved_version.d 
b/gcc/testsuite/gdc.test/fail_compilation/reserved_version.d
index f7a554ce729..b00b3453d85 100644
--- a/gcc/testsuite/gdc.test/fail_compilation/reserved_version.d
+++ b/gcc/testsuite/gdc.test/fail_compilation/reserved_version.d
@@ -76,49 +76,53 @@ fail_compilation/reserved_version.d(175): Error: 
version identifier `SH` is rese
  fail_compilation/reserved_version.d(176): Error: version identifier 
`Alpha` is reserved and cannot be set
  fail_compilation/reserved_version.d(177): Error: version identifier 
`Alpha_SoftFloat` is reserved and cannot be set
  fail_compilation/reserved_version.d(178): Error: version identifier 
`Alpha_HardFloat` is reserved and cannot be set
-fail_compilation/reserved_version.d(179): Error: version identifier 
`LittleEndian` is reserved and cannot be set
-fail_compilation/reserved_version.d(180): Error: version identifier 
`BigEndian` is reserved and cannot be set
-fail_compilation/reserved_version.d(181): Error: version identifier 
`ELFv1` is reserved and cannot be set
-fail_compilation/reserved_version.d(182): Error: version identifier 
`ELFv2` is reserved and cannot be set
-fail_compilation/reserved_version.d(183): Error: version identifier 
`CRuntime_Bionic` is reserved and cannot be set
-fail_compilation/reserved_version.d(184): Error: version identifier 
`CRuntime_DigitalMars` is reserved and cannot be set
-fail_compilation/reserved_version.d(185): Error: version identifier 
`CRuntime_Glibc` is reserved and cannot be set
-fail_compilation/reserved_version.d(186): Error: version identifier 
`CRuntime_Microsoft` is reserved and cannot be set
-fail_compilation/reserved_version.d(187): Error: version identifier 
`CRuntime_Musl` is reserved and cannot be set
-fail_compilation/reserved_version.d(188): Error: version identifier 
`CRuntime_Newlib` is reserved and cannot be set
-fail_compilation/reserved_version.d(189): Error: version identifier 
`CRuntime_UClibc` is reserved and cannot be set
-fail_compilation/reserved_version.d(190): Error: version identifier 
`CRuntime_WASI` is reserved and cannot be set
-fail_compilation/reserved_version.d(191): Error: version identifier 
`D_Coverage` is reserved and cannot be set
-fail_compilation/reserved_version.d(192): Error: version identifier 
`D_Ddoc` is reserved and cannot be set
-fail_compilation/reserved_version.d(193): Error: version identifier 
`D_InlineAsm_X86` is reserved and cannot be set
-fail_compilation/reserved_version.d(194): Error: version identifier 
`D_InlineAsm_X86_64` is reserved and cannot be set
-fail_compilation/reserved_version.d(195): Error: version identifier 
`D_LP64` is reserved and cannot be set
-fail_compilation/reserved_version.d(196): Error: version identifier 
`D_X32` is reserved and cannot be set
-fail_compilation/reserved_version.d(197): Error: version identifier 
`D_HardFloat` is reserved and cannot be set
-fail_compilation/reserved_version.d(198): Error: version identifier 
`D_SoftFloat` is reserved and cannot be set
-fail_compilation/reserved_version.d(199): Error: version identifier 
`D_PIC` is reserved and cannot be set
-fail_compilation/reserved_version.d(200): Error: version identifier 
`D_SIMD` is reserved and cannot be set
-fail_compilation/reserved_version.d(201): Error: version identifier 
`D_Version2` is reserved and cannot be set
-fail_compilation/reserved_version.d(202): Error: version identifier 
`D_NoBoundsChecks` is reserved and cannot be set
-fail_compilation/reserved_version.d(205): Error: version identifier 
`all` is reserved and cannot be set
-fail_compilation/reserved_version.d(206): Error: version identifier 
`none` is reserved and cannot be set
-fail_compilation/reserved_version.d(207): Error: version identifier 
`AsmJS` is reserved and cannot be set
-fail_compilation/reserved_version.d(208): Error: version identifier 
`Emscripten` is reserved and cannot be set
-fail_compilation/reserved_version.d(209): Error: version identifier 
`WebAssembly` is reserved and cannot be set
-fail_compilation/reserved_version.d(210): Error: version identifier 
`WASI` is reserved and cannot be set
-fail_compilation/reserved_version.d(211): Error: version identifier 
`CppRuntime_Clang` is reserved and cannot be set
-fail_compilation/reserved_version.d(212): Error: version identifier 
`CppRuntime_DigitalMars` is reserved and cannot be set
-fail_compilation/reserved_version.d(213): Error: version identifier 
`CppRuntime_Gcc` is reserved and cannot be set
-fail_compilation/reserved_version.d(214): Error: version identifier 
`CppRuntime_Microsoft` is reserved and cannot be set
-fail_compilation/reserved_version.d(215): Error: version identifier 
`CppRuntime_Sun` is reserved and cannot be set
-fail_compilation/reserved_version.d(216): Error: version identifier 
`D_PIE` is reserved and cannot be set
-fail_compilation/reserved_version.d(217): Error: version identifier 
`AVR` is reserved and cannot be set
-fail_compilation/reserved_version.d(218): Error: version identifier 
`D_PreConditions` is reserved and cannot be set
-fail_compilation/reserved_version.d(219): Error: version identifier 
`D_PostConditions` is reserved and cannot be set
-fail_compilation/reserved_version.d(220): Error: version identifier 
`D_ProfileGC` is reserved and cannot be set
-fail_compilation/reserved_version.d(221): Error: version identifier 
`D_Invariants` is reserved and cannot be set
-fail_compilation/reserved_version.d(222): Error: version identifier 
`D_Optimized` is reserved and cannot be set
-fail_compilation/reserved_version.d(223): Error: version identifier 
`VisionOS` is reserved and cannot be set
+fail_compilation/reserved_version.d(179): Error: version identifier 
`LoongArch32` is reserved and cannot be set
+fail_compilation/reserved_version.d(180): Error: version identifier 
`LoongArch64` is reserved and cannot be set
+fail_compilation/reserved_version.d(181): Error: version identifier 
`LoongArch_SoftFloat` is reserved and cannot be set
+fail_compilation/reserved_version.d(182): Error: version identifier 
`LoongArch_HardFloat` is reserved and cannot be set
+fail_compilation/reserved_version.d(183): Error: version identifier 
`LittleEndian` is reserved and cannot be set
+fail_compilation/reserved_version.d(184): Error: version identifier 
`BigEndian` is reserved and cannot be set
+fail_compilation/reserved_version.d(185): Error: version identifier 
`ELFv1` is reserved and cannot be set
+fail_compilation/reserved_version.d(186): Error: version identifier 
`ELFv2` is reserved and cannot be set
+fail_compilation/reserved_version.d(187): Error: version identifier 
`CRuntime_Bionic` is reserved and cannot be set
+fail_compilation/reserved_version.d(188): Error: version identifier 
`CRuntime_DigitalMars` is reserved and cannot be set
+fail_compilation/reserved_version.d(189): Error: version identifier 
`CRuntime_Glibc` is reserved and cannot be set
+fail_compilation/reserved_version.d(190): Error: version identifier 
`CRuntime_Microsoft` is reserved and cannot be set
+fail_compilation/reserved_version.d(191): Error: version identifier 
`CRuntime_Musl` is reserved and cannot be set
+fail_compilation/reserved_version.d(192): Error: version identifier 
`CRuntime_Newlib` is reserved and cannot be set
+fail_compilation/reserved_version.d(193): Error: version identifier 
`CRuntime_UClibc` is reserved and cannot be set
+fail_compilation/reserved_version.d(194): Error: version identifier 
`CRuntime_WASI` is reserved and cannot be set
+fail_compilation/reserved_version.d(195): Error: version identifier 
`D_Coverage` is reserved and cannot be set
+fail_compilation/reserved_version.d(196): Error: version identifier 
`D_Ddoc` is reserved and cannot be set
+fail_compilation/reserved_version.d(197): Error: version identifier 
`D_InlineAsm_X86` is reserved and cannot be set
+fail_compilation/reserved_version.d(198): Error: version identifier 
`D_InlineAsm_X86_64` is reserved and cannot be set
+fail_compilation/reserved_version.d(199): Error: version identifier 
`D_LP64` is reserved and cannot be set
+fail_compilation/reserved_version.d(200): Error: version identifier 
`D_X32` is reserved and cannot be set
+fail_compilation/reserved_version.d(201): Error: version identifier 
`D_HardFloat` is reserved and cannot be set
+fail_compilation/reserved_version.d(202): Error: version identifier 
`D_SoftFloat` is reserved and cannot be set
+fail_compilation/reserved_version.d(203): Error: version identifier 
`D_PIC` is reserved and cannot be set
+fail_compilation/reserved_version.d(204): Error: version identifier 
`D_SIMD` is reserved and cannot be set
+fail_compilation/reserved_version.d(205): Error: version identifier 
`D_Version2` is reserved and cannot be set
+fail_compilation/reserved_version.d(206): Error: version identifier 
`D_NoBoundsChecks` is reserved and cannot be set
+fail_compilation/reserved_version.d(209): Error: version identifier 
`all` is reserved and cannot be set
+fail_compilation/reserved_version.d(210): Error: version identifier 
`none` is reserved and cannot be set
+fail_compilation/reserved_version.d(211): Error: version identifier 
`AsmJS` is reserved and cannot be set
+fail_compilation/reserved_version.d(212): Error: version identifier 
`Emscripten` is reserved and cannot be set
+fail_compilation/reserved_version.d(213): Error: version identifier 
`WebAssembly` is reserved and cannot be set
+fail_compilation/reserved_version.d(214): Error: version identifier 
`WASI` is reserved and cannot be set
+fail_compilation/reserved_version.d(215): Error: version identifier 
`CppRuntime_Clang` is reserved and cannot be set
+fail_compilation/reserved_version.d(216): Error: version identifier 
`CppRuntime_DigitalMars` is reserved and cannot be set
+fail_compilation/reserved_version.d(217): Error: version identifier 
`CppRuntime_Gcc` is reserved and cannot be set
+fail_compilation/reserved_version.d(218): Error: version identifier 
`CppRuntime_Microsoft` is reserved and cannot be set
+fail_compilation/reserved_version.d(219): Error: version identifier 
`CppRuntime_Sun` is reserved and cannot be set
+fail_compilation/reserved_version.d(220): Error: version identifier 
`D_PIE` is reserved and cannot be set
+fail_compilation/reserved_version.d(221): Error: version identifier 
`AVR` is reserved and cannot be set
+fail_compilation/reserved_version.d(222): Error: version identifier 
`D_PreConditions` is reserved and cannot be set
+fail_compilation/reserved_version.d(223): Error: version identifier 
`D_PostConditions` is reserved and cannot be set
+fail_compilation/reserved_version.d(224): Error: version identifier 
`D_ProfileGC` is reserved and cannot be set
+fail_compilation/reserved_version.d(225): Error: version identifier 
`D_Invariants` is reserved and cannot be set
+fail_compilation/reserved_version.d(226): Error: version identifier 
`D_Optimized` is reserved and cannot be set
+fail_compilation/reserved_version.d(227): Error: version identifier 
`VisionOS` is reserved and cannot be set
  ---
  */
  @@ -199,6 +203,10 @@ version = SH;
  version = Alpha;
  version = Alpha_SoftFloat;
  version = Alpha_HardFloat;
+version = LoongArch32;
+version = LoongArch64;
+version = LoongArch_SoftFloat;
+version = LoongArch_HardFloat;
  version = LittleEndian;
  version = BigEndian;
  version = ELFv1;
@@ -315,6 +323,10 @@ debug = WASI;
  debug = Alpha;
  debug = Alpha_SoftFloat;
  debug = Alpha_HardFloat;
+debug = LoongArch32;
+debug = LoongArch64;
+debug = LoongArch64_SoftFloat;
+debug = LoongArch64_HardFloat;
  debug = LittleEndian;
  debug = BigEndian;
  debug = ELFv1;
diff --git 
a/gcc/testsuite/gdc.test/fail_compilation/reserved_version_switch.d 
b/gcc/testsuite/gdc.test/fail_compilation/reserved_version_switch.d
index f5f6b1c9acd..a1c8208626b 100644
--- a/gcc/testsuite/gdc.test/fail_compilation/reserved_version_switch.d
+++ b/gcc/testsuite/gdc.test/fail_compilation/reserved_version_switch.d
@@ -70,6 +70,10 @@
  // REQUIRED_ARGS: -version=Alpha
  // REQUIRED_ARGS: -version=Alpha_SoftFloat
  // REQUIRED_ARGS: -version=Alpha_HardFloat
+// REQUIRED_ARGS: -version=LoongArch32
+// REQUIRED_ARGS: -version=LoongArch64
+// REQUIRED_ARGS: -version=LoongArch_SoftFloat
+// REQUIRED_ARGS: -version=LoongArch_HardFloat
  // REQUIRED_ARGS: -version=LittleEndian
  // REQUIRED_ARGS: -version=BigEndian
  // REQUIRED_ARGS: -version=ELFv1
@@ -175,6 +179,10 @@
  // REQUIRED_ARGS: -debug=Alpha
  // REQUIRED_ARGS: -debug=Alpha_SoftFloat
  // REQUIRED_ARGS: -debug=Alpha_HardFloat
+// REQUIRED_ARGS: -debug=LoongArch32
+// REQUIRED_ARGS: -debug=LoongArch64
+// REQUIRED_ARGS: -debug=LoongArch_SoftFloat
+// REQUIRED_ARGS: -debug=LoongArch_HardFloat
  // REQUIRED_ARGS: -debug=LittleEndian
  // REQUIRED_ARGS: -debug=BigEndian
  // REQUIRED_ARGS: -debug=ELFv1
@@ -286,6 +294,10 @@ Error: version identifier `WASI` is reserved and 
cannot be set
  Error: version identifier `Alpha` is reserved and cannot be set
  Error: version identifier `Alpha_SoftFloat` is reserved and cannot be set
  Error: version identifier `Alpha_HardFloat` is reserved and cannot be set
+Error: version identifier `LoongArch32` is reserved and cannot be set
+Error: version identifier `LoongArch64` is reserved and cannot be set
+Error: version identifier `LoongArch_SoftFloat` is reserved and cannot 
be set
+Error: version identifier `LoongArch_HardFloat` is reserved and cannot 
be set
  Error: version identifier `LittleEndian` is reserved and cannot be set
  Error: version identifier `BigEndian` is reserved and cannot be set
  Error: version identifier `ELFv1` is reserved and cannot be set
diff --git a/libphobos/configure.tgt b/libphobos/configure.tgt
index 1f21f63620c..6e656c4a351 100644
--- a/libphobos/configure.tgt
+++ b/libphobos/configure.tgt
@@ -52,6 +52,9 @@ case "${target}" in
    s390*-linux*)
  	LIBPHOBOS_SUPPORTED=yes
  	;;
+  loongarch*-*-linux*)
+	LIBPHOBOS_SUPPORTED=yes
+	;;
    sparc*-*-solaris2.11*)
  	LIBPHOBOS_SUPPORTED=yes
  	;;
diff --git a/libphobos/libdruntime/gcc/sections/elf.d 
b/libphobos/libdruntime/gcc/sections/elf.d
index 5376957befd..d1316b2915f 100644
--- a/libphobos/libdruntime/gcc/sections/elf.d
+++ b/libphobos/libdruntime/gcc/sections/elf.d
@@ -1061,6 +1061,8 @@ else version (MIPS64)
      enum TLS_DTV_OFFSET = 0x8000;
  else version (IBMZ_Any)
      enum TLS_DTV_OFFSET = 0x0;
+else version (LoongArch64)
+    enum TLS_DTV_OFFSET = 0x0;
  else
      static assert( false, "Platform not supported." );
  diff --git a/libphobos/libdruntime/gcc/unwind/generic.d 
b/libphobos/libdruntime/gcc/unwind/generic.d
index e4bbb4b01dc..2e74b6319bf 100644
--- a/libphobos/libdruntime/gcc/unwind/generic.d
+++ b/libphobos/libdruntime/gcc/unwind/generic.d
@@ -141,6 +141,7 @@ else version (SPARC64)  private enum __aligned__ = 16;
  else version (SystemZ)  private enum __aligned__ = 8;
  else version (X86)      private enum __aligned__ = 16;
  else version (X86_64)   private enum __aligned__ = 16;
+else version (LoongArch64) private enum __aligned__ = 16;
  else static assert( false, "Platform not supported.");
   align(__aligned__) struct _Unwind_Exception
-- 
2.42.0
