Add support for riscv64

Signed-off-by: David Abdurachmanov <davidlt@rivosinc.com>

llvm.spec

@@ -15,7 +15,11 @@
 %endif
 
 %bcond_with compat_build
+%ifnarch riscv64
 %bcond_without check
+%else
+%bcond_with check
+%endif
 
 #global rc_ver 3
 %global maj_ver 15
@@ -74,7 +78,7 @@
 
 Name:		%{pkg_name}
 Version:	%{maj_ver}.%{min_ver}.%{patch_ver}%{?rc_ver:~rc%{rc_ver}}
-Release:	3%{?dist}
+Release:	3.0.riscv64%{?dist}
 Summary:	The Low Level Virtual Machine
 
 License:	Apache-2.0 WITH LLVM-exception OR NCSA
@@ -223,7 +227,7 @@ mv %{cmake_srcdir} cmake
 
 %build
 
-%ifarch s390 s390x %{arm} %ix86
+%ifarch s390 s390x %{arm} %ix86 riscv64
 # Decrease debuginfo verbosity to reduce memory consumption during final library linking
 %global optflags %(echo %{optflags} | sed 's/-g /-g1 /')
 %endif
@@ -237,7 +241,7 @@ export ASMFLAGS=$CFLAGS
 	-DLLVM_PARALLEL_LINK_JOBS=1 \
 	-DCMAKE_BUILD_TYPE=RelWithDebInfo \
 	-DCMAKE_SKIP_RPATH:BOOL=ON \
-%ifarch s390 %{arm} %ix86
+%ifarch s390 %{arm} %ix86 riscv64
 	-DCMAKE_C_FLAGS_RELWITHDEBINFO="%{optflags} -DNDEBUG" \
 	-DCMAKE_CXX_FLAGS_RELWITHDEBINFO="%{optflags} -DNDEBUG" \
 %endif
@@ -553,6 +557,10 @@ fi
 %endif
 
 %changelog
+* Thu Mar 23 2023 David Abdurachmanov <davidlt@rivosinc.com> - 15.0.7-3.0.riscv64
+- Disable tests on riscv64 for now
+- Lower memory consumption on riscv64
+
 * Thu Jan 19 2023 Tulio Magno Quites Machado Filho <tuliom@redhat.com> - 15.0.7-3
 - Update license to SPDX identifiers.
 - Include the Apache license adopted in 2019.