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ipa-cp: Make dumping of bit masks representing -1 nicer

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Dumps of the lattices representing bit-values and of propagation
results of bit-values can print a really long hexadecimal value when
the bit-value represents -1 (all bits set).  This patch simply detect
that situation and prints the string "-1" in that case, making the
dumps somewhat nicer.

gcc/ChangeLog:

2025-01-03  Martin Jambor  <mjambor@suse.cz>

	* ipa-cp.cc (ipcp_print_widest_int): New function.
	(ipcp_store_vr_results): Use it.
	(ipcp_bits_lattice::print): Likewise.  Fix formatting.
This commit is contained in:
Martin Jambor 2025-01-06 11:58:29 +01:00 • committed by Martin Jambor
parent 668cad04b1
commit 72b273152f
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GPG key ID: BF63C1BC3FA43540
1 changed files with 17 additions and 3 deletions
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20
gcc/ipa-cp.cc
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@ -307,6 +307,18 @@ ipcp_lattice<valtype>::print (FILE * f, bool dump_sources, bool dump_benefits)
fprintf (f, "\n");
}
/* If VALUE has all bits set to one, print "-1" to F, otherwise simply print it
hexadecimally to F. */
static void
ipcp_print_widest_int (FILE *f, const widest_int &value)
{
if (wi::eq_p (wi::bit_not (value), 0))
fprintf (f, "-1");
else
print_hex (value, f);
}
void
ipcp_bits_lattice::print (FILE *f)
{
@ -316,8 +328,10 @@ ipcp_bits_lattice::print (FILE *f)
fprintf (f, " Bits unusable (BOTTOM)\n");
else
{
fprintf (f, " Bits: value = "); print_hex (get_value (), f);
fprintf (f, ", mask = "); print_hex (get_mask (), f);
fprintf (f, " Bits: value = ");
ipcp_print_widest_int (f, get_value ());
fprintf (f, ", mask = ");
print_hex (get_mask (), f);
fprintf (f, "\n");
}
}
@ -6375,7 +6389,7 @@ ipcp_store_vr_results (void)
dumped_sth = true;
}
fprintf (dump_file, " param %i: value = ", i);
print_hex (bits->get_value (), dump_file);
ipcp_print_widest_int (dump_file, bits->get_value ());
fprintf (dump_file, ", mask = ");
print_hex (bits->get_mask (), dump_file);
fprintf (dump_file, "\n");