RISC-V: Add macro for ilp32e ABI. Cleanup white space.

	gcc/
	* config/riscv/riscv-c.c (riscv_cpu_cpp_builtins): For ABI_ILP32E,
	also define __riscv_abi_rve.  Delete trailing white space.

From-SVN: r264821

gcc/ChangeLog

+2018-10-03  Jim Wilson  <jimw@sifive.com>
+
+	* config/riscv/riscv-c.c (riscv_cpu_cpp_builtins): For ABI_ILP32E,
+	also define __riscv_abi_rve.  Delete trailing white space.
+
 2018-10-03  Paul Koning  <ni1d@arrl.net>
 
 	Enable LRA register allocator for PDP11.

gcc/config/riscv/riscv-c.c

@@ -64,8 +64,11 @@ riscv_cpu_cpp_builtins (cpp_reader *pfile)
 
   switch (riscv_abi)
     {
-    case ABI_ILP32:
     case ABI_ILP32E:
+      builtin_define ("__riscv_abi_rve");
+      gcc_fallthrough ();
+
+    case ABI_ILP32:
     case ABI_LP64:
       builtin_define ("__riscv_float_abi_soft");
       break;