On Mon, Aug 23, 2021 at 1:09 PM Jakub Jelinek via Gcc-patches
wrote:
>
> On Mon, Aug 23, 2021 at 01:25:13AM +0100, Roger Sayle wrote:
> > This patch has been tested on x86_64-pc-linux-gnu with "make bootstrap"
> > and "make -k check" with no new failures. Ok for mainline?
> >
> >
> > 2021-08-23
On Mon, Aug 23, 2021 at 01:25:13AM +0100, Roger Sayle wrote:
> This patch has been tested on x86_64-pc-linux-gnu with "make bootstrap"
> and "make -k check" with no new failures. Ok for mainline?
>
>
> 2021-08-23 Roger Sayle
>
> gcc/ChangeLog
> * match.pd (shift transformations): Chang
On 8/22/2021 6:25 PM, Roger Sayle wrote:
This short patch teaches fold that it is "safe" to change the sign
of a left shift, to reduce the number of type conversions in gimple.
As an example:
unsigned int foo(unsigned int i) {
return (int)i << 8;
}
is currently optimized to:
unsigned int
