Replace match.pd DEFINE_MATH_FNs with auto-generated lists

This patch autogenerates the operator lists for maths functions
like SQRT, adding an additional entry for internal functions.
E.g.:

        (define_operator_list SQRT
            BUILT_IN_SQRTF
            BUILT_IN_SQRT
            BUILT_IN_SQRTL
            IFN_SQRT)

and:

        (define_operator_list CABS
            BUILT_IN_CABSF
            BUILT_IN_CABS
            BUILT_IN_CABSL
            null)

(since there's no internal function for CABS).

Tested on x86_64-linux-gnu, aarch64-linux-gnu and arm-linux-gnueabi.

gcc/
	* Makefile.in (MOSTLYCLEANFILES): Add cfn-operators.pd.
	(generated_files): Likewise.
	(s-cfn-operators, cfn-operators.pd): New rules.
	(s-match): Depend on cfn-operators.pd.
	* gencfn-macros.c: Expand comment to describe -o behavior.
	(print_define_operator_list): New function.
	(main): Accept -o.  Call print_define_operator_list.
	* genmatch.c (main): Add the current directory to the include path.
	* match.pd (DEFINE_MATH_FN): Delete.  Include cfn-operators.pd
	instead.

From-SVN: r230486

1 files changed, 7 insertions, 0 deletions

diff --git a/gcc/genmatch.c b/gcc/genmatch.c
index 4df5689..3a20a48 100644
--- a/gcc/genmatch.c
+++ b/gcc/genmatch.c
@@ -4638,6 +4638,13 @@ main (int argc, char **argv)
   cpp_callbacks *cb = cpp_get_callbacks (r);
   cb->error = error_cb;
 
+  /* Add the build directory to the #include "" search path.  */
+  cpp_dir *dir = XCNEW (cpp_dir);
+  dir->name = getpwd ();
+  if (!dir->name)
+    dir->name = ASTRDUP (".");
+  cpp_set_include_chains (r, dir, NULL, false);
+
   if (!cpp_read_main_file (r, input))
     return 1;
   cpp_define (r, gimple ? "GIMPLE=1": "GENERIC=1");