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re PR target/68535 (arm.c: 5 * set but not used)

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2017-06-28  Michael Collison  <michael.collison@arm.com>

	PR target/68535
	* config/arm/arm.c (gen_ldm_seq): Remove last unnecessary
	set of base_reg
	(arm_gen_movmemqi): Removed unused variable 'i'.
	Convert 'for' loop into 'while' loop.
	(arm_expand_prologue): Remove last unnecessary set of insn.
	(thumb_pop): Remove unused variable 'pushed_words'.
	(thumb_exit): Remove last unnecessary set of regs_to_pop.

From-SVN: r249721
This commit is contained in:
Michael Collison 2017-06-28 07:07:49 +00:00 • committed by Michael Collison
parent 935b5226c3
commit da9c26dd26
2 changed files with 15 additions and 14 deletions
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11
gcc/ChangeLog
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@ -1,3 +1,14 @@
2017-06-28 Michael Collison <michael.collison@arm.com>
PR target/68535
* config/arm/arm.c (gen_ldm_seq): Remove last unnecessary
set of base_reg
(arm_gen_movmemqi): Removed unused variable 'i'.
Convert 'for' loop into 'while' loop.
(arm_expand_prologue): Remove last unnecessary set of insn.
(thumb_pop): Remove unused variable 'pushed_words'.
(thumb_exit): Remove last unnecessary set of regs_to_pop.
2017-06-28 Andreas Krebbel <krebbel@linux.vnet.ibm.com>
* config/s390/predicates.md: Use s390_rel_address_ok_p.

18
gcc/config/arm/arm.c
View file

@ -13614,10 +13614,7 @@ gen_ldm_seq (rtx *operands, int nops, bool sort_regs)
emit_insn (gen_addsi3 (newbase, base_reg_rtx, GEN_INT (offset)));
offset = 0;
if (!TARGET_THUMB1)
{
base_reg = regs[0];
base_reg_rtx = newbase;
}
base_reg_rtx = newbase;
}
for (i = 0; i < nops; i++)
@ -14141,7 +14138,6 @@ arm_gen_movmemqi (rtx *operands)
{
HOST_WIDE_INT in_words_to_go, out_words_to_go, last_bytes;
HOST_WIDE_INT srcoffset, dstoffset;
int i;
rtx src, dst, srcbase, dstbase;
rtx part_bytes_reg = NULL;
rtx mem;
@ -14171,7 +14167,7 @@ arm_gen_movmemqi (rtx *operands)
if (out_words_to_go != in_words_to_go && ((in_words_to_go - 1) & 3) != 0)
part_bytes_reg = gen_rtx_REG (SImode, (in_words_to_go - 1) & 3);
for (i = 0; in_words_to_go >= 2; i+=4)
while (in_words_to_go >= 2)
{
if (in_words_to_go > 4)
emit_insn (arm_gen_load_multiple (arm_regs_in_sequence, 4, src,
@ -21725,8 +21721,8 @@ arm_expand_prologue (void)
will prevent the scheduler from moving stores to the frame
before the stack adjustment. */
if (frame_pointer_needed)
insn = emit_insn (gen_stack_tie (stack_pointer_rtx,
hard_frame_pointer_rtx));
emit_insn (gen_stack_tie (stack_pointer_rtx,
hard_frame_pointer_rtx));
}
@ -23811,7 +23807,6 @@ thumb_pop (FILE *f, unsigned long mask)
{
int regno;
int lo_mask = mask & 0xFF;
int pushed_words = 0;
gcc_assert (mask);
@ -23834,8 +23829,6 @@ thumb_pop (FILE *f, unsigned long mask)
if ((lo_mask & ~1) != 0)
fprintf (f, ", ");
pushed_words++;
}
}
@ -24105,9 +24098,6 @@ thumb_exit (FILE *f, int reg_containing_return_addr)
move_to = number_of_first_bit_set (regs_to_pop);
asm_fprintf (f, "\tmov\t%r, %r\n", move_to, popped_into);
regs_to_pop &= ~(1 << move_to);
--pops_needed;
}