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rl78.c (rl78_note_reg_set): fixed dead reg check for non-QImode registers

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2018-01-12  Sebastian Perta  <sebastian.perta@renesas.com>
	
	* config/rl78/rl78.c (rl78_note_reg_set): fixed dead reg check 
	for non-QImode registers

From-SVN: r256945
This commit is contained in:
Sebastian Perta 2018-01-22 13:53:48 +00:00 • committed by Sebastian Perta
parent 6b271a2ec4
commit 049b866d3c
2 changed files with 13 additions and 3 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2018-01-22 Sebastian Perta <sebastian.perta@renesas.com>
* config/rl78/rl78.c (rl78_note_reg_set): fixed dead reg check
for non-QImode registers
2018-01-22 Richard Biener <rguenther@suse.de>
PR tree-optimization/83963

11
gcc/config/rl78/rl78.c
View file

@ -3792,16 +3792,21 @@ static void
rl78_note_reg_set (char *dead, rtx d, rtx insn)
{
int r, i;
bool is_dead;
if (GET_CODE (d) == MEM)
rl78_note_reg_uses (dead, XEXP (d, 0), insn);
if (GET_CODE (d) != REG)
return;
/* Do not mark the reg unused unless all QImode parts of it are dead. */
r = REGNO (d);
if (dead [r])
add_reg_note (insn, REG_UNUSED, gen_rtx_REG (GET_MODE (d), r));
is_dead = true;
for (i = 0; i < GET_MODE_SIZE (GET_MODE (d)); i ++)
if (!dead [r + i])
is_dead = false;
if(is_dead)
add_reg_note (insn, REG_UNUSED, gen_rtx_REG (GET_MODE (d), r));
if (dump_file)
fprintf (dump_file, "note set reg %d size %d\n", r, GET_MODE_SIZE (GET_MODE (d)));
for (i = 0; i < GET_MODE_SIZE (GET_MODE (d)); i ++)