diff options
Diffstat (limited to 'gcc/config/mips/mips.c')
| -rw-r--r-- | gcc/config/mips/mips.c | 40 |
1 files changed, 22 insertions, 18 deletions
diff --git a/gcc/config/mips/mips.c b/gcc/config/mips/mips.c index e44eb49b943..4b4353c95ac 100644 --- a/gcc/config/mips/mips.c +++ b/gcc/config/mips/mips.c @@ -3387,10 +3387,11 @@ mips_immediate_operand_p (int code, HOST_WIDE_INT x) /* Return the cost of binary operation X, given that the instruction sequence for a word-sized or smaller operation has cost SINGLE_COST - and that the sequence of a double-word operation has cost DOUBLE_COST. */ + and that the sequence of a double-word operation has cost DOUBLE_COST. + If SPEED is true, optimize for speed otherwise optimize for size. */ static int -mips_binary_cost (rtx x, int single_cost, int double_cost) +mips_binary_cost (rtx x, int single_cost, int double_cost, bool speed) { int cost; @@ -3399,8 +3400,8 @@ mips_binary_cost (rtx x, int single_cost, int double_cost) else cost = single_cost; return (cost - + rtx_cost (XEXP (x, 0), SET, !optimize_size) - + rtx_cost (XEXP (x, 1), GET_CODE (x), !optimize_size)); + + rtx_cost (XEXP (x, 0), SET, speed) + + rtx_cost (XEXP (x, 1), GET_CODE (x), speed)); } /* Return the cost of floating-point multiplications of mode MODE. */ @@ -3470,8 +3471,7 @@ mips_zero_extend_cost (enum machine_mode mode, rtx op) /* Implement TARGET_RTX_COSTS. */ static bool -mips_rtx_costs (rtx x, int code, int outer_code, int *total, - bool speed) +mips_rtx_costs (rtx x, int code, int outer_code, int *total, bool speed) { enum machine_mode mode = GET_MODE (x); bool float_mode_p = FLOAT_MODE_P (mode); @@ -3527,8 +3527,7 @@ mips_rtx_costs (rtx x, int code, int outer_code, int *total, operand needs to be forced into a register, we will often be able to hoist the constant load out of the loop, so the load should not contribute to the cost. */ - if (!optimize_size - || mips_immediate_operand_p (outer_code, INTVAL (x))) + if (speed || mips_immediate_operand_p (outer_code, INTVAL (x))) { *total = 0; return true; @@ -3626,7 +3625,8 @@ mips_rtx_costs (rtx x, int code, int outer_code, int *total, case IOR: case XOR: /* Double-word operations use two single-word operations. */ - *total = mips_binary_cost (x, COSTS_N_INSNS (1), COSTS_N_INSNS (2)); + *total = mips_binary_cost (x, COSTS_N_INSNS (1), COSTS_N_INSNS (2), + speed); return true; case ASHIFT: @@ -3635,9 +3635,11 @@ mips_rtx_costs (rtx x, int code, int outer_code, int *total, case ROTATE: case ROTATERT: if (CONSTANT_P (XEXP (x, 1))) - *total = mips_binary_cost (x, COSTS_N_INSNS (1), COSTS_N_INSNS (4)); + *total = mips_binary_cost (x, COSTS_N_INSNS (1), COSTS_N_INSNS (4), + speed); else - *total = mips_binary_cost (x, COSTS_N_INSNS (1), COSTS_N_INSNS (12)); + *total = mips_binary_cost (x, COSTS_N_INSNS (1), COSTS_N_INSNS (12), + speed); return true; case ABS: @@ -3673,7 +3675,8 @@ mips_rtx_costs (rtx x, int code, int outer_code, int *total, *total = mips_cost->fp_add; return false; } - *total = mips_binary_cost (x, COSTS_N_INSNS (1), COSTS_N_INSNS (4)); + *total = mips_binary_cost (x, COSTS_N_INSNS (1), COSTS_N_INSNS (4), + speed); return true; case MINUS: @@ -3724,7 +3727,8 @@ mips_rtx_costs (rtx x, int code, int outer_code, int *total, an SLTU. The MIPS16 version then needs to move the result of the SLTU from $24 to a MIPS16 register. */ *total = mips_binary_cost (x, COSTS_N_INSNS (1), - COSTS_N_INSNS (TARGET_MIPS16 ? 5 : 4)); + COSTS_N_INSNS (TARGET_MIPS16 ? 5 : 4), + speed); return true; case NEG: @@ -3760,10 +3764,10 @@ mips_rtx_costs (rtx x, int code, int outer_code, int *total, else if (mode == DImode && !TARGET_64BIT) /* Synthesized from 2 mulsi3s, 1 mulsidi3 and two additions, where the mulsidi3 always includes an MFHI and an MFLO. */ - *total = (optimize_size - ? COSTS_N_INSNS (ISA_HAS_MUL3 ? 7 : 9) - : mips_cost->int_mult_si * 3 + 6); - else if (optimize_size) + *total = (speed + ? mips_cost->int_mult_si * 3 + 6 + : COSTS_N_INSNS (ISA_HAS_MUL3 ? 7 : 9)); + else if (!speed) *total = (ISA_HAS_MUL3 ? 1 : 2); else if (mode == DImode) *total = mips_cost->int_mult_di; @@ -3800,7 +3804,7 @@ mips_rtx_costs (rtx x, int code, int outer_code, int *total, case UDIV: case UMOD: - if (optimize_size) + if (!speed) { /* It is our responsibility to make division by a power of 2 as cheap as 2 register additions if we want the division |