On Wed, Mar 29, 2017 at 11:17:20AM +0100, Sudi Das wrote:
>
> Hi all
>
> During combine GCC tries to merge CMP (with zero) and AND into a TST.
> However, in cases where an ANDS operand is not compatible, this was being
> missed. Adding a define_split where this operand was moved to a register
> s
Hi all
During combine GCC tries to merge CMP (with zero) and AND into a TST. However,
in cases where an ANDS operand is not compatible, this was being missed. Adding
a define_split where this operand was moved to a register seems to help out.
For example for a test :
int
f (unsigned char *p)
