counting the tst insns in the current function. Start a new
one before emitting any prologue instructions.
* mn10300.h (REGISTER_MOVE_COST): Bump up cost of moves in the
same class.
* mn10300.md (untyped_call): New expander.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@13955
138bc75d-0d04-0410-961f-
82ee72b054a4
{
unsigned int size;
+ /* We need to end the current sequence so that count_tst_insns can
+ look at all the insns in this function. Normally this would be
+ unsafe, but it's OK in the prologue/epilogue expanders. */
+ end_sequence ();
+
/* Determine if it is profitable to put the value zero into a register
for the entire function. If so, set ZERO_DREG and ZERO_AREG. */
if (regs_ever_live[2] || regs_ever_live[3]
zero_areg = NULL_RTX;
}
+ /* Start a new sequence. */
+ start_sequence ();
+
/* SIZE includes the fixed stack space needed for function calls. */
size = get_frame_size () + current_function_outgoing_args_size;
size += (current_function_outgoing_args_size ? 4 : 0);
return 8;
-#define REGISTER_MOVE_COST(CLASS1, CLASS2) (CLASS1 != CLASS2 ? 4 : 0)
+#define REGISTER_MOVE_COST(CLASS1, CLASS2) (CLASS1 != CLASS2 ? 4 : 2)
/* A crude cut at RTX_COSTS for the MN10300. */
"calls %C1"
[(set_attr "cc" "clobber")])
+(define_expand "untyped_call"
+ [(parallel [(call (match_operand 0 "" "")
+ (const_int 0))
+ (match_operand 1 "" "")
+ (match_operand 2 "" "")])]
+ ""
+ "
+{
+ int i;
+
+ emit_call_insn (gen_call (operands[0], const0_rtx));
+
+ for (i = 0; i < XVECLEN (operands[2], 0); i++)
+ {
+ rtx set = XVECEXP (operands[2], 0, i);
+ emit_move_insn (SET_DEST (set), SET_SRC (set));
+ }
+ DONE;
+}")
+
(define_insn "nop"
[(const_int 0)]
""