Hi!
Several places in wi::mul_internal didn't handle high parameter
and would return the low bits instead of high bits.
Fixed thusly, bootstrapped/regtested on x86_64-linux and i686-linux, ok for
trunk?
2014-07-03 Jakub Jelinek ja...@redhat.com
PR tree-optimization/61682
*
Jakub Jelinek ja...@redhat.com writes:
@@ -1302,12 +1310,28 @@ wi::mul_internal (HOST_WIDE_INT *val, co
/* Handle multiplications by 1. */
if (op1 == 1)
{
+ if (high)
+ {
+ if (sgn == SIGNED wi::neg_p (op2))
+ val[0] = -1;
+ else
+ val[0]
On Jul 3, 2014, at 2:53 PM, Richard Sandiford rdsandif...@googlemail.com
wrote:
Jakub Jelinek ja...@redhat.com writes:
+ if (sgn == SIGNED wi::neg_p (op1))
I think the preferred way of writing this is wi::neg_p (op1, svn)
Yes.
