[builtins] Fix c?zdi2 on sparc64/Linux and ignore riscv32
On sparc64/Linux, sparc64 isn't defined; the canonical way of
checking for sparc64 is sparc && arch64, which also works on the
BSDs and Solaris. Since this problem does not occur on 32-bit
architectures, riscv32 can be ignored. This fixes and refines rL324593.
Patch by jrtc27 (James Clarke)
Differential Revision: https://reviews.llvm.org/D43146
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@342504 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed
