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Factor out common tests in 8-byte reg/reg move splitters on 32-bit sparc.

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* config/sparc/sparc.c (sparc_split_regreg_legitimate): New
	function.
	* config/sparc/sparc-protos.h (sparc_split_regreg_legitimate):
	Declare it.
	* config/sparc/sparc.md (DImode reg/reg split): Use it.
	(DFmode reg/reg split): Likewise.

From-SVN: r180354
This commit is contained in:
David S. Miller 2011-10-23 22:34:07 +00:00 committed by David S. Miller
parent 9c85d38bf4
commit b1fc9f8b8d
4 changed files with 37 additions and 10 deletions
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7
gcc/ChangeLog
View File

@ -1,5 +1,12 @@
2011-10-23 David S. Miller <davem@davemloft.net>
* config/sparc/sparc.c (sparc_split_regreg_legitimate): New
function.
* config/sparc/sparc-protos.h (sparc_split_regreg_legitimate):
Declare it.
* config/sparc/sparc.md (DImode reg/reg split): Use it.
(DFmode reg/reg split): Likewise.
* config/sparc/sparc.md (*movdi_insn_sp32_v9): Add alternatives for
generating fzero and fone instructions.
(DImode const_int --> reg splitter): Only trigger for integer regs.

1
gcc/config/sparc/sparc-protos.h
View File

@ -68,6 +68,7 @@ extern void sparc_defer_case_vector (rtx, rtx, int);
extern bool sparc_expand_move (enum machine_mode, rtx *);
extern void sparc_emit_set_symbolic_const64 (rtx, rtx, rtx);
extern int sparc_splitdi_legitimate (rtx, rtx);
extern int sparc_split_regreg_legitimate (rtx, rtx);
extern int sparc_absnegfloat_split_legitimate (rtx, rtx);
extern const char *output_ubranch (rtx, int, rtx);
extern const char *output_cbranch (rtx, rtx, int, int, int, rtx);

25
gcc/config/sparc/sparc.c
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@ -7762,6 +7762,31 @@ sparc_splitdi_legitimate (rtx reg, rtx mem)
return 1;
}
/* Like sparc_splitdi_legitimate but for REG <--> REG moves. */
int
sparc_split_regreg_legitimate (rtx reg1, rtx reg2)
{
int regno1, regno2;
if (GET_CODE (reg1) == SUBREG)
reg1 = SUBREG_REG (reg1);
if (GET_CODE (reg1) != REG)
return 0;
regno1 = REGNO (reg1);
if (GET_CODE (reg2) == SUBREG)
reg2 = SUBREG_REG (reg2);
if (GET_CODE (reg2) != REG)
return 0;
regno2 = REGNO (reg2);
if (SPARC_INT_REG_P (regno1) && SPARC_INT_REG_P (regno2))
return 1;
return 0;
}
/* Return 1 if x and y are some kind of REG and they refer to
different hard registers. This test is guaranteed to be
run after reload. */

14
gcc/config/sparc/sparc.md
View File

@ -1834,11 +1834,8 @@
"reload_completed
&& (! TARGET_V9
|| (! TARGET_ARCH64
&& ((GET_CODE (operands[0]) == REG
&& SPARC_INT_REG_P (REGNO (operands[0])))
|| (GET_CODE (operands[0]) == SUBREG
&& GET_CODE (SUBREG_REG (operands[0])) == REG
&& SPARC_INT_REG_P (REGNO (SUBREG_REG (operands[0])))))))"
&& sparc_split_regreg_legitimate (operands[0],
operands[1])))"
[(clobber (const_int 0))]
{
rtx set_dest = operands[0];
@ -2247,11 +2244,8 @@
(match_operand:DF 1 "register_operand" ""))]
"(! TARGET_V9
|| (! TARGET_ARCH64
&& ((GET_CODE (operands[0]) == REG
&& SPARC_INT_REG_P (REGNO (operands[0])))
|| (GET_CODE (operands[0]) == SUBREG
&& GET_CODE (SUBREG_REG (operands[0])) == REG
&& SPARC_INT_REG_P (REGNO (SUBREG_REG (operands[0])))))))
&& sparc_split_regreg_legitimate (operands[0],
operands[1])))
&& reload_completed"
[(clobber (const_int 0))]
{