Hi, Jim
On Mon, Feb 22, 2016 at 12:53 PM, Jim Wilson wrote:
> On Mon, Feb 22, 2016 at 7:55 AM, David Edelsohn wrote:
>> If I remove extendqihi2 (extend:HI pattern) from the PowerPC port,
>> will that cause any problems for the GCC RTL type system or inhibit
>> optimizations? I see that Alpha a
On Mon, Feb 22, 2016 at 7:55 AM, David Edelsohn wrote:
> If I remove extendqihi2 (extend:HI pattern) from the PowerPC port,
> will that cause any problems for the GCC RTL type system or inhibit
> optimizations? I see that Alpha and SPARC define extendqihi2, but
> IA-64 and AArch64 do not, so the
On 02/22/2016 08:55 AM, David Edelsohn wrote:
csmith has uncovered a latent bug in the the PowerPC port for a
combiner pattern involving extendqihi2 (the alternative in the pattern
has never triggered for real code in over 10 years). Basic extendqihi2
works correctly (the instructions extend to e
