On 23/06/11 17:26, Richard Guenther wrote:
On Thu, Jun 23, 2011 at 4:40 PM, Andrew Stubbs<andrew.stu...@linaro.org> wrote:
There are many cases where the widening_mult pass does not recognise
widening multiply-and-accumulate cases simply because there is a type
conversion step between the multiply and add statements.
This patch should rectify that simply by looking beyond those conversions.
That's surely wrong for (int)(short)int_var. You have to constrain
the conversions
you look through properly.
To be clear, it only skips past NOP_EXPR. Is it not the case that what
you're describing would need a CONVERT_EXPR?
Andrew
