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loop.c (check_dbra_loop): Use gen_int_mode instead of GEN_INT for start_value when...

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* loop.c (check_dbra_loop): Use gen_int_mode instead of GEN_INT
	for start_value when it is directly moved into reg, and factorize
	the retrieval of GET_MODE (reg).

From-SVN: r77803
This commit is contained in:
Eric Botcazou 2004-02-14 14:43:21 +00:00
parent 544142d816
commit 45f9877a51
4 changed files with 23 additions and 4 deletions
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6
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
2004-02-14 Olivier Hainque <hainque@act-europe.fr>
* loop.c (check_dbra_loop): Use gen_int_mode instead of GEN_INT
for start_value when it is directly moved into reg, and factorize
the retrieval of GET_MODE (reg).
2004-02-14 Richard Sandiford <rsandifo@redhat.com>
* config/mips/mips-protos.h (mips_load_got_page): Delete.

9
gcc/loop.c
View File

@ -8015,6 +8015,7 @@ check_dbra_loop (struct loop *loop, int insn_count)
struct loop_ivs *ivs = LOOP_IVS (loop);
struct iv_class *bl;
rtx reg;
enum machine_mode mode;
rtx jump_label;
rtx final_value;
rtx start_value;
@ -8435,6 +8436,7 @@ check_dbra_loop (struct loop *loop, int insn_count)
/* Save some info needed to produce the new insns. */
reg = bl->biv->dest_reg;
mode = GET_MODE (reg);
jump_label = condjump_label (PREV_INSN (loop_end));
new_add_val = GEN_INT (-INTVAL (bl->biv->add_val));
@ -8446,12 +8448,12 @@ check_dbra_loop (struct loop *loop, int insn_count)
if (initial_value == const0_rtx
&& GET_CODE (comparison_value) == CONST_INT)
{
start_value = GEN_INT (comparison_val - add_adjust);
start_value
= gen_int_mode (comparison_val - add_adjust, mode);
loop_insn_hoist (loop, gen_move_insn (reg, start_value));
}
else if (GET_CODE (initial_value) == CONST_INT)
{
enum machine_mode mode = GET_MODE (reg);
rtx offset = GEN_INT (-INTVAL (initial_value) - add_adjust);
rtx add_insn = gen_add3_insn (reg, comparison_value, offset);
@ -8467,7 +8469,6 @@ check_dbra_loop (struct loop *loop, int insn_count)
}
else if (! add_adjust)
{
enum machine_mode mode = GET_MODE (reg);
rtx sub_insn = gen_sub3_insn (reg, comparison_value,
initial_value);
@ -8525,7 +8526,7 @@ check_dbra_loop (struct loop *loop, int insn_count)
/* Add new compare/branch insn at end of loop. */
start_sequence ();
emit_cmp_and_jump_insns (reg, const0_rtx, cmp_code, NULL_RTX,
GET_MODE (reg), 0,
mode, 0,
XEXP (jump_label, 0));
tem = get_insns ();
end_sequence ();

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,7 @@
2004-02-14 Eric Botcazou <ebotcazou@act-europe.fr>
* gcc.c-torture/compile/20040214-1.c: New test.
2004-02-14 Kriang Lerdsuwanakij <lerdsuwa@users.sourceforge.net>
PR c++/13635
@ -20794,3 +20798,4 @@ rlsruhe.de>
* New file.

7
gcc/testsuite/gcc.c-torture/compile/20040214-1.c Normal file
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@ -0,0 +1,7 @@
void foo(void)
{
char c;
for (c = -75; c <= 75; c++)
;
}