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regmove.c (regmove_optimize): Add variable old_max_uid.

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* regmove.c (regmove_optimize): Add variable old_max_uid.
        At the end of the function, update basic_block_end.

From-SVN: r22724
This commit is contained in:
Bernd Schmidt 1998-10-01 13:00:52 -06:00 committed by Jeff Law
parent 6f82f64bf6
commit 961d411902
2 changed files with 21 additions and 2 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
Thu Oct 1 19:58:30 1998 Bernd Schmidt <crux@Pool.Informatik.RWTH-Aachen.DE>
* regmove.c (regmove_optimize): Add variable old_max_uid.
At the end of the function, update basic_block_end.
Thu Oct 1 17:58:25 1998 David S. Miller <davem@pierdol.cobaltmicro.com>
* dwarf2out.c (expand_builtin_dwarf_reg_size): Use

18
gcc/regmove.c
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@ -917,6 +917,7 @@ regmove_optimize (f, nregs, regmove_dump_file)
int nregs;
FILE *regmove_dump_file;
{
int old_max_uid = get_max_uid ();
rtx insn;
struct match match;
int pass;
@ -926,8 +927,8 @@ regmove_optimize (f, nregs, regmove_dump_file)
regno_src_regno = (int *)alloca (sizeof *regno_src_regno * nregs);
for (i = nregs; --i >= 0; ) regno_src_regno[i] = -1;
regmove_bb_head = (int *)alloca (sizeof (int) * (get_max_uid () + 1));
for (i = get_max_uid (); i >= 0; i--) regmove_bb_head[i] = -1;
regmove_bb_head = (int *)alloca (sizeof (int) * (old_max_uid + 1));
for (i = old_max_uid; i >= 0; i--) regmove_bb_head[i] = -1;
for (i = 0; i < n_basic_blocks; i++)
regmove_bb_head[INSN_UID (basic_block_head[i])] = i;
@ -1384,6 +1385,19 @@ regmove_optimize (f, nregs, regmove_dump_file)
}
}
#endif /* REGISTER_CONSTRAINTS */
/* In fixup_match_1, some insns may have been inserted after basic block
ends. Fix that here. */
for (i = 0; i < n_basic_blocks; i++)
{
rtx end = basic_block_end[i];
rtx new = end;
rtx next = NEXT_INSN (new);
while (next != 0 && INSN_UID (next) >= old_max_uid
&& (i == n_basic_blocks - 1 || basic_block_head[i + 1] != next))
new = next, next = NEXT_INSN (new);
basic_block_end[i] = new;
}
}
/* Returns the INSN_CODE for INSN if its pattern has matching constraints for