procyberian/gcc
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

re PR middle-end/15239 (suboptimal mult-by-const expansion cost limit)

Browse source 
PR middle-end/15239
	* expmed.c (expand_mult): Remove artificial restriction on the
	maximum cost of a synthetic multiplication sequence.

From-SVN: r83610
This commit is contained in:
Roger Sayle 2004-06-24 20:38:59 +00:00 • committed by Roger Sayle
parent 3db4a9b428
commit 7906648201
2 changed files with 6 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
gcc/ChangeLog
View file

@ -1,3 +1,9 @@
2004-06-24 Roger Sayle <roger@eyesopen.com>
PR middle-end/15239
* expmed.c (expand_mult): Remove artificial restriction on the
maximum cost of a synthetic multiplication sequence.
2004-06-24 Eric Christopher <echristo@redhat.com>
* combine.c (distribute_notes): Don't delete sets to

1
gcc/expmed.c
View file

@ -2664,7 +2664,6 @@ expand_mult (enum machine_mode mode, rtx op0, rtx op1, rtx target,
&& (unsignedp || !flag_trapv))
{
int mult_cost = rtx_cost (gen_rtx_MULT (mode, op0, op1), SET);
mult_cost = MIN (12 * add_cost[mode], mult_cost);
if (choose_mult_variant (mode, INTVAL (const_op1), &algorithm, &variant,
mult_cost))