sh.c (shiftcosts): Return MAX_COST when the first operand is CONST_INT.
* config/sh/sh.c (shiftcosts): Return MAX_COST when the first operand is CONST_INT. Take COSTS_N_INSNS into account. (sh_rtx_costs): Don't apply COSTS_N_INSNS to the return value of shiftcosts. From-SVN: r184865
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@ -1,3 +1,10 @@
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2012-03-03 Kaz Kojima <kkojima@gcc.gnu.org>
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* config/sh/sh.c (shiftcosts): Return MAX_COST when the first
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operand is CONST_INT. Take COSTS_N_INSNS into account.
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(sh_rtx_costs): Don't apply COSTS_N_INSNS to the return value
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of shiftcosts.
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2012-03-02 Richard Henderson <rth@redhat.com>
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* optabs.c (expand_atomic_test_and_set): Honor
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@ -2828,22 +2828,26 @@ shiftcosts (rtx x)
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{
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int value;
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/* There is no pattern for constant first operand. */
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if (CONST_INT_P (XEXP (x, 0)))
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return MAX_COST;
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if (TARGET_SHMEDIA)
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return 1;
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return COSTS_N_INSNS (1);
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if (GET_MODE_SIZE (GET_MODE (x)) > UNITS_PER_WORD)
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{
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if (GET_MODE (x) == DImode
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&& CONST_INT_P (XEXP (x, 1))
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&& INTVAL (XEXP (x, 1)) == 1)
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return 2;
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return COSTS_N_INSNS (2);
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/* Everything else is invalid, because there is no pattern for it. */
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return MAX_COST;
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}
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/* If shift by a non constant, then this will be expensive. */
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if (!CONST_INT_P (XEXP (x, 1)))
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return SH_DYNAMIC_SHIFT_COST;
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return COSTS_N_INSNS (SH_DYNAMIC_SHIFT_COST);
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/* Otherwise, return the true cost in instructions. Cope with out of range
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shift counts more or less arbitrarily. */
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@ -2855,10 +2859,10 @@ shiftcosts (rtx x)
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/* If SH3, then we put the constant in a reg and use shad. */
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if (cost > 1 + SH_DYNAMIC_SHIFT_COST)
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cost = 1 + SH_DYNAMIC_SHIFT_COST;
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return cost;
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return COSTS_N_INSNS (cost);
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}
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else
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return shift_insns[value];
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return COSTS_N_INSNS (shift_insns[value]);
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}
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/* Return the cost of an AND/XOR/IOR operation. */
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@ -3091,7 +3095,7 @@ sh_rtx_costs (rtx x, int code, int outer_code, int opno ATTRIBUTE_UNUSED,
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case ASHIFT:
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case ASHIFTRT:
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case LSHIFTRT:
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*total = COSTS_N_INSNS (shiftcosts (x));
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*total = shiftcosts (x);
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return true;
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case DIV:
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