rs6000.md (probe_stack): Delete.

	* config/rs6000/rs6000.md (probe_stack): Delete.
	(probe_stack_address): New.

From-SVN: r219806

gcc/ChangeLog

 2015-01-17  Segher Boessenkool  <segher@kernel.crashing.org>
 
+	* config/rs6000/rs6000.md (probe_stack): Delete.
+	(probe_stack_address): New.
+
+2015-01-17  Segher Boessenkool  <segher@kernel.crashing.org>
+
 	* config/rs6000/rs6000.c (rs6000_gimplify_va_arg): Use TARGET_32BIT
 	to test for 32-bit ABIs, not !TARGET_POWERPC64.
 

gcc/config/rs6000/rs6000.md

@@ -11671,11 +11671,13 @@
   ""
   "")
 
-(define_expand "probe_stack"
-  [(set (match_operand 0 "memory_operand" "=m")
-        (unspec [(const_int 0)] UNSPEC_PROBE_STACK))]
+(define_expand "probe_stack_address"
+  [(use (match_operand 0 "address_operand"))]
   ""
 {
+  operands[0] = gen_rtx_MEM (Pmode, operands[0]);
+  MEM_VOLATILE_P (operands[0]) = 1;
+
   if (TARGET_64BIT)
     emit_insn (gen_probe_stack_di (operands[0]));
   else