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riscv-gcc-1
Commit 9bb21998 by Bernd Schmidt
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Indentation fixes 

From-SVN: r28751
parent 3648099b
Showing with 58 additions and 58 deletions
gcc/unroll.c
......@@ -353,7 +353,7 @@ unroll_loop (loop_end, insn_count, loop_start, end_insert_before,
return;
}
else if (loop_info->n_iterations > 0
&& loop_info->n_iterations * insn_count < MAX_UNROLLED_INSNS)
&& loop_info->n_iterations * insn_count < MAX_UNROLLED_INSNS)
{
unroll_number = loop_info->n_iterations;
unroll_type = UNROLL_COMPLETELY;
......@@ -783,71 +783,71 @@ unroll_loop (loop_end, insn_count, loop_start, end_insert_before,
/* Mark all local registers, i.e. the ones which are referenced only
inside the loop. */
if (INSN_UID (copy_end) < max_uid_for_loop)
{
int copy_start_luid = INSN_LUID (copy_start);
int copy_end_luid = INSN_LUID (copy_end);
{
int copy_start_luid = INSN_LUID (copy_start);
int copy_end_luid = INSN_LUID (copy_end);
/* If a register is used in the jump insn, we must not duplicate it
since it will also be used outside the loop. */
if (GET_CODE (copy_end) == JUMP_INSN)
copy_end_luid--;
/* If a register is used in the jump insn, we must not duplicate it
since it will also be used outside the loop. */
if (GET_CODE (copy_end) == JUMP_INSN)
copy_end_luid--;
/* If we have a target that uses cc0, then we also must not duplicate
the insn that sets cc0 before the jump insn. */
/* If we have a target that uses cc0, then we also must not duplicate
the insn that sets cc0 before the jump insn. */
#ifdef HAVE_cc0
if (GET_CODE (copy_end) == JUMP_INSN)
copy_end_luid--;
if (GET_CODE (copy_end) == JUMP_INSN)
copy_end_luid--;
#endif
/* If copy_start points to the NOTE that starts the loop, then we must
use the next luid, because invariant pseudo-regs moved out of the loop
have their lifetimes modified to start here, but they are not safe
to duplicate. */
if (copy_start == loop_start)
copy_start_luid++;
/* If a pseudo's lifetime is entirely contained within this loop, then we
can use a different pseudo in each unrolled copy of the loop. This
results in better code. */
/* We must limit the generic test to max_reg_before_loop, because only
these pseudo registers have valid regno_first_uid info. */
for (j = FIRST_PSEUDO_REGISTER; j < max_reg_before_loop; ++j)
if (REGNO_FIRST_UID (j) > 0 && REGNO_FIRST_UID (j) <= max_uid_for_loop
&& uid_luid[REGNO_FIRST_UID (j)] >= copy_start_luid
&& REGNO_LAST_UID (j) > 0 && REGNO_LAST_UID (j) <= max_uid_for_loop
&& uid_luid[REGNO_LAST_UID (j)] <= copy_end_luid)
/* If copy_start points to the NOTE that starts the loop, then we must
use the next luid, because invariant pseudo-regs moved out of the loop
have their lifetimes modified to start here, but they are not safe
to duplicate. */
if (copy_start == loop_start)
copy_start_luid++;
/* If a pseudo's lifetime is entirely contained within this loop, then we
can use a different pseudo in each unrolled copy of the loop. This
results in better code. */
/* We must limit the generic test to max_reg_before_loop, because only
these pseudo registers have valid regno_first_uid info. */
for (j = FIRST_PSEUDO_REGISTER; j < max_reg_before_loop; ++j)
if (REGNO_FIRST_UID (j) > 0 && REGNO_FIRST_UID (j) <= max_uid_for_loop
&& uid_luid[REGNO_FIRST_UID (j)] >= copy_start_luid
&& REGNO_LAST_UID (j) > 0 && REGNO_LAST_UID (j) <= max_uid_for_loop
&& uid_luid[REGNO_LAST_UID (j)] <= copy_end_luid)
{
/* However, we must also check for loop-carried dependencies.
If the value the pseudo has at the end of iteration X is
used by iteration X+1, then we can not use a different pseudo
for each unrolled copy of the loop. */
/* A pseudo is safe if regno_first_uid is a set, and this
set dominates all instructions from regno_first_uid to
regno_last_uid. */
/* ??? This check is simplistic. We would get better code if
this check was more sophisticated. */
if (set_dominates_use (j, REGNO_FIRST_UID (j), REGNO_LAST_UID (j),
copy_start, copy_end))
local_regno[j] = 1;
if (loop_dump_stream)
{
if (local_regno[j])
fprintf (loop_dump_stream, "Marked reg %d as local\n", j);
else
fprintf (loop_dump_stream, "Did not mark reg %d as local\n",
j);
}
}
/* Givs that have been created from multiple biv increments always have
local registers. */
for (j = first_increment_giv; j <= last_increment_giv; j++)
{
/* However, we must also check for loop-carried dependencies.
If the value the pseudo has at the end of iteration X is
used by iteration X+1, then we can not use a different pseudo
for each unrolled copy of the loop. */
/* A pseudo is safe if regno_first_uid is a set, and this
set dominates all instructions from regno_first_uid to
regno_last_uid. */
/* ??? This check is simplistic. We would get better code if
this check was more sophisticated. */
if (set_dominates_use (j, REGNO_FIRST_UID (j), REGNO_LAST_UID (j),
copy_start, copy_end))
local_regno[j] = 1;
local_regno[j] = 1;
if (loop_dump_stream)
{
if (local_regno[j])
fprintf (loop_dump_stream, "Marked reg %d as local\n", j);
else
fprintf (loop_dump_stream, "Did not mark reg %d as local\n",
j);
}
fprintf (loop_dump_stream, "Marked reg %d as local\n", j);
}
/* Givs that have been created from multiple biv increments always have
local registers. */
for (j = first_increment_giv; j <= last_increment_giv; j++)
{
local_regno[j] = 1;
if (loop_dump_stream)
fprintf (loop_dump_stream, "Marked reg %d as local\n", j);
}
}
}
/* If this loop requires exit tests when unrolled, check to see if we
can precondition the loop so as to make the exit tests unnecessary.
......
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