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expr.c (emit_group_store): Only create a new pseudo reg if the quantity it needs to hold isn't already a...

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* expr.c (emit_group_store): Only create a new pseudo reg if the
	quantity it needs to hold isn't already a suitable pseudo.

From-SVN: r112469
This commit is contained in:
Roger Sayle 2006-03-28 19:38:28 +00:00 committed by Roger Sayle
parent b6313dcf96
commit 5ac6066999
2 changed files with 14 additions and 3 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2006-03-28 Roger Sayle <roger@eyesopen.com>
* expr.c (emit_group_store): Only create a new pseudo reg if the
quantity it needs to hold isn't already a suitable pseudo.
2006-03-28 Jeff Law <law@redhat.com>
* timevar.def (TV_TREE_PHI_CPROP): New timevar.

12
gcc/expr.c
View File

@ -1890,8 +1890,13 @@ emit_group_store (rtx orig_dst, rtx src, tree type ATTRIBUTE_UNUSED, int ssize)
for (i = start; i < XVECLEN (src, 0); i++)
{
rtx reg = XEXP (XVECEXP (src, 0, i), 0);
tmps[i] = gen_reg_rtx (GET_MODE (reg));
emit_move_insn (tmps[i], reg);
if (!REG_P (reg) || REGNO (reg) < FIRST_PSEUDO_REGISTER)
{
tmps[i] = gen_reg_rtx (GET_MODE (reg));
emit_move_insn (tmps[i], reg);
}
else
tmps[i] = reg;
}
/* If we won't be storing directly into memory, protect the real destination
@ -1918,7 +1923,8 @@ emit_group_store (rtx orig_dst, rtx src, tree type ATTRIBUTE_UNUSED, int ssize)
}
else if (!MEM_P (dst) && GET_CODE (dst) != CONCAT)
{
dst = gen_reg_rtx (GET_MODE (orig_dst));
if (!REG_P (dst) || REGNO (dst) < FIRST_PSEUDO_REGISTER)
dst = gen_reg_rtx (GET_MODE (orig_dst));
/* Make life a bit easier for combine. */
emit_move_insn (dst, CONST0_RTX (GET_MODE (orig_dst)));
}