Turn calls to copysignl into an FCOPYSIGN node. Handle FCOPYSIGN nodes

with ppc_f128 type by having the type legalizer turn these back into a
call to copysignl.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98514 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/CodeGen/RuntimeLibcalls.h

@@ -150,6 +150,10 @@ namespace RTLIB {
     FLOOR_F64,
     FLOOR_F80,
     FLOOR_PPCF128,
+    COPYSIGN_F32,
+    COPYSIGN_F64,
+    COPYSIGN_F80,
+    COPYSIGN_PPCF128,
 
     // CONVERSION
     FPEXT_F32_F64,