SH optimized software floating point routines

[Joern Rennecke]

Quoting Christian Bruel <christian.bruel@st.com>:

> Edited to apply on top of latest Joern's patch. Certainly not optimal
> but it fixes the QNaNs checks for builtins and inlined unordered
> comparisons for -mieee or -fno-inite-math-only.

You are still on the wrong track; as I said in my earlier message, we
should not emit the library call for SH4 in the first place.

Please try the attached patch instead.
-------------- next part --------------
--- predicates.md-20100718	2010-07-22 08:17:37.273500678 +0100
+++ predicates.md	2010-07-22 08:28:57.257502902 +0100
@@ -575,9 +575,10 @@
 ;; UNORDERED is only supported on SHMEDIA.
 
 (define_predicate "sh_float_comparison_operator"
-  (ior (match_operand 0 "ordered_comparison_operator")
-       (and (match_test "TARGET_SHMEDIA")
-	    (match_code "unordered"))))
+  (if_then_else (match_test "TARGET_SHMEDIA")
+		(ior (match_operand 0 "ordered_comparison_operator")
+		     (match_code "unordered"))
+		(match_operand 0 "comparison_operator")))
 
 (define_predicate "shmedia_cbranch_comparison_operator"
   (ior (match_operand 0 "equality_comparison_operator")