add support for loongarch64

(cherry picked from commit 0b86711cd4117431e96eb94419f68f6d20439dcf)

0001-mvapich2-2.3.6-add-support-for-loongarch64.patch

@@ -0,0 +1,37 @@
+From f9aedeaeadd84f2c5e949a148e82d2a18d1e45d8 Mon Sep 17 00:00:00 2001
+From: test <test@example.com>
+Date: Thu, 25 Apr 2024 07:45:52 +0000
+Subject: [PATCH] mvapich2 2.3.6 add support for loongarch64
+
+---
+ src/mpid/ch3/channels/common/include/mv2_clock.h | 14 ++++++++++++++
+ 1 file changed, 14 insertions(+)
+
+diff --git a/src/mpid/ch3/channels/common/include/mv2_clock.h b/src/mpid/ch3/channels/common/include/mv2_clock.h
+index 77552c4..0ad6b43 100644
+--- a/src/mpid/ch3/channels/common/include/mv2_clock.h
++++ b/src/mpid/ch3/channels/common/include/mv2_clock.h
+@@ -81,6 +81,20 @@ static inline cycles_t get_cycles()
+     asm volatile ("mov %0=ar.itc" : "=r" (ret));
+     return ret;
+ }
++#elif defined(__loongarch64)
++typedef unsigned long cycles_t;
++static inline cycles_t get_cycles()
++{
++	int rID = 0;
++        cycles_t val = 0;
++
++        __asm__ __volatile__(
++                "rdtime.d %0, %1 \n\t"
++                : "=r"(val), "=r"(rID)
++                :
++                );
++        return val;
++}
+ #elif defined(__aarch64__)
+ typedef unsigned long cycles_t;
+ static inline cycles_t get_cycles()
+-- 
+2.43.0
+

mvapich2.spec

@@ -2,7 +2,7 @@
 
 Name:            mvapich2
 Version:         2.3.6
-Release:         3
+Release:         4
 Summary:         OSU MVAPICH2 MPI package
 License:         BSD and MIT
 URL:             http://mvapich.cse.ohio-state.edu
@@ -14,6 +14,7 @@ Patch0002:       0002-mvapich23-unbundle-osu_benchmarks.patch
 %ifarch riscv64
 Patch1000:       1000-add-riscv-support.patch
 %endif
+Patch1001:       0001-mvapich2-2.3.6-add-support-for-loongarch64.patch
 BuildRequires:   gcc-gfortran python3-devel gcc-c++
 BuildRequires:   bison flex autoconf automake libtool
 BuildRequires:   perl-Digest-MD5 hwloc-devel rdma-core-devel
@@ -261,6 +262,9 @@ cd ..
 
 
 %changelog
+* Thu Apr 25 2024 Pengda Dou <doupengda@loongson.cn> - 2.3.6-4
+- add support for loongarch64
+
 * Fri Sep 1 2023 renyi <977713017@qq.com> - 2.3.6-3
 - Fix changelog error