Add gencfn-macros.c

This patch automatically generates case macros such as:

        CASE_CFN_SQRT

for each {F,,L} floating-point built-in function and each {,L,LL,IMAX}
integer built-in function.  The macros match the same built-in
functions as CASE_FLT_FN and CASE_INT_FN but in addition include
the associated internal function, if any.

The idea is to make sure that users of combined_fn don't need to know
which built-in functions have internal-function equivalents.  If we add
a new function to internal-fn.def, all combined_fn users should pick it
up automatically.

The generator wants to use "hash_set <nofree_string_hash>",
so the patch follows hash_map in using the types given by the
traits as the key.  This is a no-op for current users of hash_set.

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

gcc/
	* Makefile.in (HASH_TABLE_H): Add GGC_H.
	(MOSTLYCLEANFILES, generated_files): Add case-fn-macros.h.
	(s-case-cfn-macros, case-cfn-macros.h, build/gencfn-macros.o)
	(build/gencfn-macros$(build_exeext): New rules.
	(genprogerr): Add cfn-macros.
	* hash-set.h (hash_set): Use the traits value_type as the key.
	* gencfn-macros.c: New file.

From-SVN: r230476

1 files changed, 2 insertions, 1 deletions

diff --git a/gcc/hash-set.h b/gcc/hash-set.h
index e85af2a1745..679d2b6df64 100644
--- a/gcc/hash-set.h
+++ b/gcc/hash-set.h
@@ -21,10 +21,11 @@ along with GCC; see the file COPYING3.  If not see
 #ifndef hash_set_h
 #define hash_set_h
 
-template<typename Key, typename Traits = default_hash_traits<Key> >
+template<typename KeyId, typename Traits = default_hash_traits<KeyId> >
 class hash_set
 {
 public:
+  typedef typename Traits::value_type Key;
   explicit hash_set (size_t n = 13, bool ggc = false CXX_MEM_STAT_INFO)
     : m_table (n, ggc, true, HASH_SET_ORIGIN PASS_MEM_STAT) {}