On Thu, Nov 24, 2016 at 11:04:13AM +0100, Georg-Johann Lay wrote:
> >@@ -11287,7 +11287,8 @@ change_zero_ext (rtx pat)
> > else if (GET_CODE (x) == ZERO_EXTEND
> >&& SCALAR_INT_MODE_P (mode)
> >&& REG_P (XEXP (x, 0))
> >- && HARD_REGISTER_P (XEXP (x, 0)))
> >
On 24.11.2016 00:27, Segher Boessenkool wrote:
As reported in https://gcc.gnu.org/ml/gcc-patches/2016-11/msg02388.html .
Changing the mode of a hard register can lead to problems, or at least
it can make worse code if the result will need reloads.
Tested on avr-elf on the test in that email, an
As reported in https://gcc.gnu.org/ml/gcc-patches/2016-11/msg02388.html .
Changing the mode of a hard register can lead to problems, or at least
it can make worse code if the result will need reloads.
Tested on avr-elf on the test in that email, and bootstrapped and
regression checked on powerpc6
