[cfe-dev] patch: more builtin support
Chris Lattner
clattner at apple.com
Sat Jul 19 17:23:26 PDT 2008
On Jul 18, 2008, at 4:34 PM, Daniel Dunbar wrote:
> This patch adds support for __builtin_{ffs[l][l], parity[l][l],
> popcount[l][l], huge_valf, huge_vall}.
> + test case
Looks great to me with one minor change: we don't want the clang
testsuite to actually execute code. Please make the test just be
something like this:
void test(int M, long long N) {
printf("%d %lld: %d %d %d %d %d %d %d %d %d %d %d %d %d %d %d %d %d
%d\n",
M, N,
__builtin_ffs(M), __builtin_ffsl(M), __builtin_ffsll(M),
__builtin_parity(M), __builtin_parityl(M),
__builtin_parityll(M),
__builtin_popcount(M), __builtin_popcountl(M),
__builtin_popcountll(M),
__builtin_ffs(N), __builtin_ffsl(N), __builtin_ffsll(N),
__builtin_parity(N), __builtin_parityl(N),
__builtin_parityll(N),
__builtin_popcount(N), __builtin_popcountl(N),
__builtin_popcountll(N));
}
with: clang -emit-llvm %s | not grep __builtin
or something like that. The llvm-test suite can be used to verify
that we don't miscompile them.
Thanks Daniel!
-Chris
More information about the cfe-dev
mailing list