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mn10300.c (expand_prologue): End the current sequence before counting the tst insns in the current function. 

* mn10300.c (expand_prologue): End the current sequence before
        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.

From-SVN: r13955
This commit is contained in:
Jeff Law 1997-04-22 10:29:04 -06:00
parent 9ae69d8b9d
commit 6c0870b896
3 changed files with 29 additions and 1 deletions
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8
gcc/config/mn10300/mn10300.c
View File

@ -419,6 +419,11 @@ expand_prologue ()
{
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]
@ -475,6 +480,9 @@ expand_prologue ()
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);

2
gcc/config/mn10300/mn10300.h
View File

@ -743,7 +743,7 @@ extern struct rtx_def *mn10300_builtin_saveregs ();
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. */

20
gcc/config/mn10300/mn10300.md
View File

@ -1234,6 +1234,26 @@
"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)]
""