More riscv64-related enablement

Notes:

  - Cherry-pick from here (from Songsong Zhang) and resolve conflicts
    throughout the spec:
    https://gitlab.com/fedoravforce/llvm/-/commit/2485502 ("Add riscv64
    support", 2025-03-15)

  - Add Songsong's and David Abdurachmanov's Signed-off-by.

Signed-off-by: Kashyap Chamarthy <[email protected]>
Signed-off-by: David Abdurachmanov <[email protected]>
Signed-off-by: Songsong Zhang <[email protected]>

Author: kashyapc

llvm.spec

@@ -218,7 +218,7 @@
 %global unprefixed_libdir %{_lib}
 
 %if 0%{?rhel}
-%global targets_to_build "X86;AMDGPU;PowerPC;NVPTX;SystemZ;AArch64;BPF;WebAssembly"
+%global targets_to_build "X86;AMDGPU;PowerPC;NVPTX;SystemZ;AArch64;BPF;WebAssembly;RISCV"
 %global experimental_targets_to_build ""
 %else
 %global targets_to_build "all"
@@ -316,7 +316,7 @@
 #region main package
 Name:		%{pkg_name_llvm}
 Version:	%{maj_ver}.%{min_ver}.%{patch_ver}%{?rc_ver:~rc%{rc_ver}}%{?llvm_snapshot_version_suffix:~%{llvm_snapshot_version_suffix}}
-Release:	1%{?dist}
+Release:	2%{?dist}
 Summary:	The Low Level Virtual Machine
 
 License:	Apache-2.0 WITH LLVM-exception OR NCSA
@@ -2470,7 +2470,7 @@ export LIT_OPTS="$LIT_OPTS --max-retries-per-test=4"
 
 %if 0%{?rhel}
 # libomp tests are often very slow on s390x brew builders
-%ifnarch s390x
+%ifnarch s390x riscv64
 %cmake_build --target check-openmp
 %endif
 %else
@@ -3145,7 +3145,7 @@ fi
 %{_prefix}/lib/clang/%{maj_ver}/lib/%{compiler_rt_triple}/clang_rt.crtend.o
 %endif
 
-%ifnarch %{ix86} s390x
+%ifnarch %{ix86} s390x riscv64
 %{_prefix}/lib/clang/%{maj_ver}/lib/%{compiler_rt_triple}/liborc_rt.a
 %endif
 
@@ -3432,6 +3432,10 @@ fi
 
 #region changelog
 %changelog
+* Fri Jun 20 2025 Kashyap Chamarthy <[email protected]> - 20.1.7-2
+- Add riscv64 enablement bits; thanks: Songsong Zhang
+   ([email protected]) and David Abdurachmanov ([email protected])
+
 * Thu Jun 19 2025 Nikita Popov <[email protected]> - 20.1.7-1
 - Update to LLVM 20.1.7