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aarch64.c (aarch64_if_then_else_costs): New function. 

2014-06-03  Andrew Pinski  <apinski@cavium.com>

	* config/aarch64/aarch64.c (aarch64_if_then_else_costs): New function.
	(aarch64_rtx_costs): Use aarch64_if_then_else_costs.

From-SVN: r211205
This commit is contained in:
Andrew Pinski 2014-06-03 15:42:47 -07:00 committed by Andrew Pinski
parent 3ce7abdd2f
commit 2d5ffe4631
2 changed files with 71 additions and 60 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
014-06-03 Andrew Pinski <apinski@cavium.com>
* config/aarch64/aarch64.c (aarch64_if_then_else_costs): New function.
(aarch64_rtx_costs): Use aarch64_if_then_else_costs.
2014-06-03 Kai Tietz <ktietz@redhat.com>
* config/i386/i386.c (ix86_function_value_regno_p): Disallow DX_REG

126
gcc/config/aarch64/aarch64.c
View File

@ -4849,6 +4849,70 @@ aarch64_rtx_arith_op_extract_p (rtx x, enum machine_mode mode)
return false;
}
/* Calculate the cost of calculating (if_then_else (OP0) (OP1) (OP2)),
storing it in *COST. Result is true if the total cost of the operation
has now been calculated. */
static bool
aarch64_if_then_else_costs (rtx op0, rtx op1, rtx op2, int *cost, bool speed)
{
if (GET_CODE (op1) == PC || GET_CODE (op2) == PC)
{
/* Conditional branch. */
if (GET_MODE_CLASS (GET_MODE (XEXP (op0, 0))) == MODE_CC)
return true;
else
{
if (GET_CODE (op0) == NE
|| GET_CODE (op0) == EQ)
{
rtx inner = XEXP (op0, 0);
rtx comparator = XEXP (op0, 1);
if (comparator == const0_rtx)
{
/* TBZ/TBNZ/CBZ/CBNZ. */
if (GET_CODE (inner) == ZERO_EXTRACT)
/* TBZ/TBNZ. */
*cost += rtx_cost (XEXP (inner, 0), ZERO_EXTRACT,
0, speed);
else
/* CBZ/CBNZ. */
*cost += rtx_cost (inner, GET_CODE (op0), 0, speed);
return true;
}
}
else if (GET_CODE (op0) == LT
|| GET_CODE (op0) == GE)
{
rtx comparator = XEXP (op0, 1);
/* TBZ/TBNZ. */
if (comparator == const0_rtx)
return true;
}
}
}
else if (GET_MODE_CLASS (GET_MODE (XEXP (op0, 0))) == MODE_CC)
{
/* It's a conditional operation based on the status flags,
so it must be some flavor of CSEL. */
/* CSNEG, CSINV, and CSINC are handled for free as part of CSEL. */
if (GET_CODE (op1) == NEG
|| GET_CODE (op1) == NOT
|| (GET_CODE (op1) == PLUS && XEXP (op1, 1) == const1_rtx))
op1 = XEXP (op1, 0);
*cost += rtx_cost (op1, IF_THEN_ELSE, 1, speed);
*cost += rtx_cost (op2, IF_THEN_ELSE, 2, speed);
return true;
}
/* We don't know what this is, cost all operands. */
return false;
}
/* Calculate the cost of calculating X, storing it in *COST. Result
is true if the total cost of the operation has now been calculated. */
static bool
@ -5583,66 +5647,8 @@ cost_plus:
return false; /* All arguments need to be in registers. */
case IF_THEN_ELSE:
op2 = XEXP (x, 2);
op0 = XEXP (x, 0);
op1 = XEXP (x, 1);
if (GET_CODE (op1) == PC || GET_CODE (op2) == PC)
{
/* Conditional branch. */
if (GET_MODE_CLASS (GET_MODE (XEXP (op0, 0))) == MODE_CC)
return true;
else
{
if (GET_CODE (op0) == NE
|| GET_CODE (op0) == EQ)
{
rtx inner = XEXP (op0, 0);
rtx comparator = XEXP (op0, 1);
if (comparator == const0_rtx)
{
/* TBZ/TBNZ/CBZ/CBNZ. */
if (GET_CODE (inner) == ZERO_EXTRACT)
/* TBZ/TBNZ. */
*cost += rtx_cost (XEXP (inner, 0), ZERO_EXTRACT,
0, speed);
else
/* CBZ/CBNZ. */
*cost += rtx_cost (inner, GET_CODE (op0), 0, speed);
return true;
}
}
else if (GET_CODE (op0) == LT
|| GET_CODE (op0) == GE)
{
rtx comparator = XEXP (op0, 1);
/* TBZ/TBNZ. */
if (comparator == const0_rtx)
return true;
}
}
}
else if (GET_MODE_CLASS (GET_MODE (XEXP (op0, 0))) == MODE_CC)
{
/* It's a conditional operation based on the status flags,
so it must be some flavor of CSEL. */
/* CSNEG, CSINV, and CSINC are handled for free as part of CSEL. */
if (GET_CODE (op1) == NEG
|| GET_CODE (op1) == NOT
|| (GET_CODE (op1) == PLUS && XEXP (op1, 1) == const1_rtx))
op1 = XEXP (op1, 0);
*cost += rtx_cost (op1, IF_THEN_ELSE, 1, speed);
*cost += rtx_cost (op2, IF_THEN_ELSE, 2, speed);
return true;
}
/* We don't know what this is, cost all operands. */
return false;
return aarch64_if_then_else_costs (XEXP (x, 0), XEXP (x, 1),
XEXP (x, 2), cost, speed);
case EQ:
case NE: