diff mbox series

[1/1] gcc/d: add LoongArch64 support for D frontend

Message ID 24628144-581a-4fcb-9fcb-9a518c79778e@gmail.com
State New
Headers show
Series Add LoongArch64 support for D frontend | expand

Commit Message

liushuyu Sept. 23, 2023, 11:21 p.m. UTC 
gcc/ChangeLog:

	* config.gcc: add loongarch-d.o to d_target_objs for LoongArch
	architecture.

gcc/config/ChangeLog:

	* loongarch/loongarch-d.cc
	(loongarch_d_target_versions): add interface function to define builtin
	D versions for LoongArch architecture.
	(loongarch_d_handle_target_float_abi): add interface function to define
	builtin D traits for LoongArch architecture.
	(loongarch_d_register_target_info): add interface function to register
	loongarch_d_handle_target_float_abi function.
	* loongarch/loongarch-d.h:
	(loongarch_d_target_versions): add function prototype.
	(loongarch_d_register_target_info): Likewise.
	* loongarch/t-loongarch: add object target for loongarch-d.cc.

gcc/testsuite/ChangeLog:

	* gdc.test/fail_compilation/reserved_version.d: add reserved version
	tests for LoongArch architecture and also updated expected output.
	* gdc.test/fail_compilation/reserved_version_switch.d: Likewise.

libphobos/ChangeLog:

	* configure.tgt: enable libphobos for LoongArch architecture.
	* configure: Regenerate.
	* libdruntime/gcc/sections/elf.d: add TLS_DTV_OFFSET constant for
	LoongArch64.
	* libdruntime/gcc/unwind/generic.d: add __aligned__ constant for
	LoongArch64.
	* libdruntime/Makefile.in: Regenerate.

Signed-off-by: Zixing Liu <liushuyu011@gmail.com>
---
  gcc/config.gcc                                |  1 +
  gcc/config/loongarch/loongarch-d.cc           | 82 ++++++++++++++++
  gcc/config/loongarch/loongarch-d.h            | 26 +++++
  gcc/config/loongarch/t-loongarch              |  4 +
  .../fail_compilation/reserved_version.d       | 98 +++++++++++--------
  .../reserved_version_switch.d                 | 12 +++
  libphobos/configure.tgt                       |  3 +
  libphobos/libdruntime/gcc/sections/elf.d      |  2 +
  libphobos/libdruntime/gcc/unwind/generic.d    |  1 +
  9 files changed, 186 insertions(+), 43 deletions(-)
  create mode 100644 gcc/config/loongarch/loongarch-d.cc
  create mode 100644 gcc/config/loongarch/loongarch-d.h

Comments

Iain Buclaw Sept. 24, 2023, 9:02 a.m. UTC | #1 
Excerpts from liushuyu's message of September 24, 2023 1:21 am:
> 
> gcc/ChangeLog:
> 
> 	* config.gcc: add loongarch-d.o to d_target_objs for LoongArch
> 	architecture.
> 
> gcc/config/ChangeLog:
> 
> 	* loongarch/loongarch-d.cc
> 	(loongarch_d_target_versions): add interface function to define builtin
> 	D versions for LoongArch architecture.
> 	(loongarch_d_handle_target_float_abi): add interface function to define
> 	builtin D traits for LoongArch architecture.
> 	(loongarch_d_register_target_info): add interface function to register
> 	loongarch_d_handle_target_float_abi function.
> 	* loongarch/loongarch-d.h:
> 	(loongarch_d_target_versions): add function prototype.
> 	(loongarch_d_register_target_info): Likewise.
> 	* loongarch/t-loongarch: add object target for loongarch-d.cc.
> 
> gcc/testsuite/ChangeLog:
> 
> 	* gdc.test/fail_compilation/reserved_version.d: add reserved version
> 	tests for LoongArch architecture and also updated expected output.
> 	* gdc.test/fail_compilation/reserved_version_switch.d: Likewise.
> 
> libphobos/ChangeLog:
> 
> 	* configure.tgt: enable libphobos for LoongArch architecture.
> 	* configure: Regenerate.
> 	* libdruntime/gcc/sections/elf.d: add TLS_DTV_OFFSET constant for
> 	LoongArch64.
> 	* libdruntime/gcc/unwind/generic.d: add __aligned__ constant for
> 	LoongArch64.
> 	* libdruntime/Makefile.in: Regenerate.
> 
> Signed-off-by: Zixing Liu <liushuyu011@gmail.com>

Thanks, some comments below.

> 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.

Copyright years start from the year the source file was introduced.

> +
> +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");

D_LP64 is already predefined by d/d-builtins.cc if POINTER_SIZE == 64,
and it should not be confused with any LP64 ABI model.  I haven't
checked what happens if you predefine the same version twice.

> +  else
> +    d_add_builtin_version ("D_LP32");

D_LP32 is not a standardized predefined version condition as far as I'm
aware. Maybe these should be LoongArch_LP64 and LoongArch_LP32 instead.

> +
> +  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");
> +    }
> +}
> +
> 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

These tests would be added anyway as part of merging the upstream DMD
mainline, but otherwise I wouldn't object to update them here.

Regards,
Iain.
diff mbox series

Patch

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