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xtensa: fix ICE on pr59037.c test 

xtensa gcc gets ICE on pr59037.c test because its xtensa_output_literal
function cannot handle integer literals of sizes other than 4 and 8,
whereas the test uses 16-byte int vector.
Split integer literal formatting into the recursive function
xtensa_output_integer_literal_parts capable of handling literals of any
power of 2 size not less than 4.

2016-11-02  Max Filippov  <jcmvbkbc@gmail.com>
gcc/
	* config/xtensa/xtensa.c (xtensa_output_integer_literal_parts):
	New function.
	(xtensa_output_literal): Use xtensa_output_integer_literal_parts
	to format MODE_INT and MODE_PARTIAL_INT literals.

From-SVN: r241800
This commit is contained in:
Max Filippov 2016-11-02 18:34:43 +00:00 committed by Max Filippov
parent 302fd2cc3f
commit 9ae4ef4cd3
2 changed files with 30 additions and 21 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2016-11-02 Max Filippov <jcmvbkbc@gmail.com>
* config/xtensa/xtensa.c (xtensa_output_integer_literal_parts):
New function.
(xtensa_output_literal): Use xtensa_output_integer_literal_parts
to format MODE_INT and MODE_PARTIAL_INT literals.
2016-11-02 Segher Boessenkool <segher@kernel.crashing.org>
PR target/78168

44
gcc/config/xtensa/xtensa.c
View File

@ -2535,13 +2535,32 @@ xtensa_output_addr_const_extra (FILE *fp, rtx x)
return false;
}
static void
xtensa_output_integer_literal_parts (FILE *file, rtx x, int size)
{
if (size > 4 && !(size & (size - 1)))
{
rtx first, second;
split_double (x, &first, &second);
xtensa_output_integer_literal_parts (file, first, size / 2);
fputs (", ", file);
xtensa_output_integer_literal_parts (file, second, size / 2);
}
else if (size == 4)
{
output_addr_const (file, x);
}
else
{
gcc_unreachable();
}
}
void
xtensa_output_literal (FILE *file, rtx x, machine_mode mode, int labelno)
{
long value_long[2];
int size;
rtx first, second;
fprintf (file, "\t.literal .LC%u, ", (unsigned) labelno);
@ -2580,25 +2599,8 @@ xtensa_output_literal (FILE *file, rtx x, machine_mode mode, int labelno)
case MODE_INT:
case MODE_PARTIAL_INT:
size = GET_MODE_SIZE (mode);
switch (size)
{
case 4:
output_addr_const (file, x);
fputs ("\n", file);
break;
case 8:
split_double (x, &first, &second);
output_addr_const (file, first);
fputs (", ", file);
output_addr_const (file, second);
fputs ("\n", file);
break;
default:
gcc_unreachable ();
}
xtensa_output_integer_literal_parts (file, x, GET_MODE_SIZE (mode));
fputs ("\n", file);
break;
default: