Forgot to commit this earlier. Its part of the simplify-libcalls

enhancement for ffs, ffsl, and ffsll optimizations. We can't do the opt
unless we also have the at least ffsll function. Notably SVR4 doesn't.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22033 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/llvm/Config/config.h.in b/include/llvm/Config/config.h.in
index d38213246443daf3041b0b865428d5cc50e3620a..ab9cfa204963f243dcc39b57cb4945db967bcb02 100644 (file)
--- a/include/llvm/Config/config.h.in
+++ b/include/llvm/Config/config.h.in
@@ -91,6 +91,9 @@
 /* Define to 1 if you have the <fcntl.h> header file. */
 #undef HAVE_FCNTL_H
 
+/* Define to 1 if you have the `ffsll' function. */
+#undef HAVE_FFSLL
+
 /* Set to 1 if the finite function is found in <ieeefp.h> */
 #undef HAVE_FINITE_IN_IEEEFP_H