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riscv-gcc-1
Commit e71c0aa7 by Roger Sayle Committed by Roger Sayle
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expmed.c (choose_multiplier): Change interface to return the multiplier lowpart… 

expmed.c (choose_multiplier): Change interface to return the multiplier lowpart as an rtx instead of an...


	* expmed.c (choose_multiplier): Change interface to return the
	multiplier lowpart as an rtx instead of an unsigned HOST_WIDE_INT.
	(expand_divmod): Update calls to choose_multiplier.

From-SVN: r94220
parent b01150a2
Showing with 23 additions and 19 deletions
gcc/ChangeLog
2005-01-25 Roger Sayle <roger@eyesopen.com>
* expmed.c (choose_multiplier): Change interface to return the
multiplier lowpart as an rtx instead of an unsigned HOST_WIDE_INT.
(expand_divmod): Update calls to choose_multiplier.
2005-01-24 John David Anglin <dave.anglin@nrc-cnrc.gc.ca>
PR middle-end/19330
......
gcc/expmed.c
......@@ -2391,8 +2391,7 @@ static bool choose_mult_variant (enum machine_mode, HOST_WIDE_INT,
static rtx expand_mult_const (enum machine_mode, rtx, HOST_WIDE_INT, rtx,
const struct algorithm *, enum mult_variant);
static unsigned HOST_WIDE_INT choose_multiplier (unsigned HOST_WIDE_INT, int,
int, unsigned HOST_WIDE_INT *,
int *, int *);
int, rtx *, int *, int *);
static unsigned HOST_WIDE_INT invert_mod2n (unsigned HOST_WIDE_INT, int);
static rtx extract_high_half (enum machine_mode, rtx);
static rtx expand_mult_highpart (enum machine_mode, rtx, rtx, rtx, int, int);
......@@ -3118,8 +3117,7 @@ ceil_log2 (unsigned HOST_WIDE_INT x)
static
unsigned HOST_WIDE_INT
choose_multiplier (unsigned HOST_WIDE_INT d, int n, int precision,
unsigned HOST_WIDE_INT *multiplier_ptr,
int *post_shift_ptr, int *lgup_ptr)
rtx *multiplier_ptr, int *post_shift_ptr, int *lgup_ptr)
{
HOST_WIDE_INT mhigh_hi, mlow_hi;
unsigned HOST_WIDE_INT mhigh_lo, mlow_lo;
......@@ -3191,12 +3189,12 @@ choose_multiplier (unsigned HOST_WIDE_INT d, int n, int precision,
if (n < HOST_BITS_PER_WIDE_INT)
{
unsigned HOST_WIDE_INT mask = ((unsigned HOST_WIDE_INT) 1 << n) - 1;
*multiplier_ptr = mhigh_lo & mask;
*multiplier_ptr = GEN_INT (mhigh_lo & mask);
return mhigh_lo >= mask;
}
else
{
*multiplier_ptr = mhigh_lo;
*multiplier_ptr = GEN_INT (mhigh_lo);
return mhigh_hi;
}
}
......@@ -3855,9 +3853,10 @@ expand_divmod (int rem_flag, enum tree_code code, enum machine_mode mode,
{
if (unsignedp)
{
unsigned HOST_WIDE_INT mh, ml;
unsigned HOST_WIDE_INT mh;
int pre_shift, post_shift;
int dummy;
rtx ml;
unsigned HOST_WIDE_INT d = (INTVAL (op1)
& GET_MODE_MASK (compute_mode));
......@@ -3923,8 +3922,7 @@ expand_divmod (int rem_flag, enum tree_code code, enum machine_mode mode,
= (shift_cost[compute_mode][post_shift - 1]
+ shift_cost[compute_mode][1]
+ 2 * add_cost[compute_mode]);
t1 = gen_int_mode (ml, compute_mode);
t1 = expand_mult_highpart (compute_mode, op0, t1,
t1 = expand_mult_highpart (compute_mode, op0, ml,
NULL_RTX, 1,
max_cost - extra_cost);
if (t1 == 0)
......@@ -3959,8 +3957,7 @@ expand_divmod (int rem_flag, enum tree_code code, enum machine_mode mode,
extra_cost
= (shift_cost[compute_mode][pre_shift]
+ shift_cost[compute_mode][post_shift]);
t2 = gen_int_mode (ml, compute_mode);
t2 = expand_mult_highpart (compute_mode, t1, t2,
t2 = expand_mult_highpart (compute_mode, t1, ml,
NULL_RTX, 1,
max_cost - extra_cost);
if (t2 == 0)
......@@ -3987,6 +3984,7 @@ expand_divmod (int rem_flag, enum tree_code code, enum machine_mode mode,
{
unsigned HOST_WIDE_INT ml;
int lgup, post_shift;
rtx mlr;
HOST_WIDE_INT d = INTVAL (op1);
unsigned HOST_WIDE_INT abs_d = d >= 0 ? d : -d;
......@@ -4069,7 +4067,8 @@ expand_divmod (int rem_flag, enum tree_code code, enum machine_mode mode,
else if (size <= HOST_BITS_PER_WIDE_INT)
{
choose_multiplier (abs_d, size, size - 1,
&ml, &post_shift, &lgup);
&mlr, &post_shift, &lgup);
ml = (unsigned HOST_WIDE_INT) INTVAL (mlr);
if (ml < (unsigned HOST_WIDE_INT) 1 << (size - 1))
{
rtx t1, t2, t3;
......@@ -4081,8 +4080,7 @@ expand_divmod (int rem_flag, enum tree_code code, enum machine_mode mode,
extra_cost = (shift_cost[compute_mode][post_shift]
+ shift_cost[compute_mode][size - 1]
+ add_cost[compute_mode]);
t1 = gen_int_mode (ml, compute_mode);
t1 = expand_mult_highpart (compute_mode, op0, t1,
t1 = expand_mult_highpart (compute_mode, op0, mlr,
NULL_RTX, 0,
max_cost - extra_cost);
if (t1 == 0)
......@@ -4115,11 +4113,11 @@ expand_divmod (int rem_flag, enum tree_code code, enum machine_mode mode,
goto fail1;
ml |= (~(unsigned HOST_WIDE_INT) 0) << (size - 1);
mlr = gen_int_mode (ml, compute_mode);
extra_cost = (shift_cost[compute_mode][post_shift]
+ shift_cost[compute_mode][size - 1]
+ 2 * add_cost[compute_mode]);
t1 = gen_int_mode (ml, compute_mode);
t1 = expand_mult_highpart (compute_mode, op0, t1,
t1 = expand_mult_highpart (compute_mode, op0, mlr,
NULL_RTX, 0,
max_cost - extra_cost);
if (t1 == 0)
......@@ -4169,9 +4167,10 @@ expand_divmod (int rem_flag, enum tree_code code, enum machine_mode mode,
/* We will come here only for signed operations. */
if (op1_is_constant && HOST_BITS_PER_WIDE_INT >= size)
{
unsigned HOST_WIDE_INT mh, ml;
unsigned HOST_WIDE_INT mh;
int pre_shift, lgup, post_shift;
HOST_WIDE_INT d = INTVAL (op1);
rtx ml;
if (d > 0)
{
......@@ -4213,8 +4212,7 @@ expand_divmod (int rem_flag, enum tree_code code, enum machine_mode mode,
extra_cost = (shift_cost[compute_mode][post_shift]
+ shift_cost[compute_mode][size - 1]
+ 2 * add_cost[compute_mode]);
t3 = gen_int_mode (ml, compute_mode);
t3 = expand_mult_highpart (compute_mode, t2, t3,
t3 = expand_mult_highpart (compute_mode, t2, ml,
NULL_RTX, 1,
max_cost - extra_cost);
if (t3 != 0)
......
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