[LLVM] Rebuild for riscv64 (#10204)

* [LLVM] Rebuild for riscv64 but change version number

* Undo version bump

* fixup! Undo version bump

* Apply suggestions from code review

* [LLVM] Only enable Intel JIT Events on x86_64 architecture

---------

Co-authored-by: Mosè Giordano <[email protected]>
Co-authored-by: Mosè Giordano <[email protected]>

Author: Zentrik

L/LLVM/LLVM_full@19/build_tarballs.jl

@@ -4,4 +4,4 @@ include("../common.jl")
 
 build_tarballs(ARGS, configure_build(ARGS, version; experimental_platforms=true)...;
                preferred_gcc_version=v"10", preferred_llvm_version=v"18", julia_compat="1.6")
-# Build trigger: 5
+# Build trigger: 7

L/LLVM/LLVM_full_assert@19/build_tarballs.jl

@@ -4,4 +4,4 @@ include("../common.jl")
 
 build_tarballs(ARGS, configure_build(ARGS, version; assert=true, experimental_platforms=true)...;
                preferred_gcc_version=v"10", preferred_llvm_version=v"18", julia_compat="1.6")
-# Build trigger: 6
+# Build trigger: 8

L/LLVM/common.jl

@@ -248,7 +248,8 @@ if [[ ${target} == *linux* ]]; then
 #     CMAKE_FLAGS+=(-DLLVM_USE_OPROFILE=1)
 fi
 # if [[ ${target} == *linux* ]] || [[ ${target} == *mingw32* ]]; then
-if [[ ${target} == *linux* ]]; then # TODO only LLVM12
+if [[ "${LLVM_MAJ_VER}" -ge "12" && ${target} == x86_64-linux* ]]; then
+    # Intel VTune is available only on x86_64 architectures
     CMAKE_FLAGS+=(-DLLVM_USE_INTEL_JITEVENTS=1)
 fi