On 06/19/14 03:44, Zhenqiang Chen wrote:
ChangeLog:
2014-06-17 Zhenqiang Chen zhenqiang.c...@linaro.org
* cprop.c (try_replace_reg): Check cost for constants.
diff --git a/gcc/cprop.c b/gcc/cprop.c
index aef3ee8..c9cf02a 100644
--- a/gcc/cprop.c
+++ b/gcc/cprop.c
@@ -733,6 +733,14
On 17 June 2014 17:42, Zhenqiang Chen zhenqiang.c...@linaro.org wrote:
On 17 June 2014 16:15, Richard Biener richard.guent...@gmail.com wrote:
On Tue, Jun 17, 2014 at 4:11 AM, Zhenqiang Chen
zhenqiang.c...@linaro.org wrote:
Hi,
For some large constant, ports like ARM, need one more
On Tue, Jun 17, 2014 at 4:11 AM, Zhenqiang Chen
zhenqiang.c...@linaro.org wrote:
Hi,
For some large constant, ports like ARM, need one more instructions to
operate it. e.g
#define MASK 0xfe00ff
void maskdata (int * data, int len)
{
int i = len;
for (; i 0; i -= 2)
{
On 17 June 2014 16:15, Richard Biener richard.guent...@gmail.com wrote:
On Tue, Jun 17, 2014 at 4:11 AM, Zhenqiang Chen
zhenqiang.c...@linaro.org wrote:
Hi,
For some large constant, ports like ARM, need one more instructions to
operate it. e.g
#define MASK 0xfe00ff
void maskdata (int *
Hi,
For some large constant, ports like ARM, need one more instructions to
operate it. e.g
#define MASK 0xfe00ff
void maskdata (int * data, int len)
{
int i = len;
for (; i 0; i -= 2)
{
data[i] = MASK;
data[i + 1] = MASK;
}
}
Need two instructions for each AND
