Hi Kelvin,

On Mon, Dec 12, 2016 at 05:40:05PM -0700, Kelvin Nilsen wrote:
> The patch has been bootstrapped and tested on
> powerpc64le-unknown-linux and powerpc-unknown-linux (big-endian, with
> both -m32 and -m64 target options) with no regressions.
> 
> Is this ok for the trunk?

Yes it is, much better, thanks!  Two comments below, please fix the testcase
one before commit if it is indeed a problem:

> +;; Though the instructions to which this expansion maps operate on
> +;; 64-bit registers, the current implementation only operates on
> +;; SI-mode operands as the high-order bits provide no information
> +;; that is not already available in the low-order bits.  To avoid the
> +;; costs of data widening operations, a future enhancement might add
> +;; support for DI-mode operands.

And operands[1] could be QImode.

> +(define_expand "cmprb"
> +  [(set (match_dup 3)
> +     (unspec:CC [(match_operand:SI 1 "gpc_reg_operand" "r")
> +                 (match_operand:SI 2 "gpc_reg_operand" "r")]
> +      UNSPEC_CMPRB))


> --- gcc/testsuite/gcc.target/powerpc/byte-in-set-1.c  (revision 0)
> +++ gcc/testsuite/gcc.target/powerpc/byte-in-set-1.c  (working copy)

Did you forget the scan-assembler here and in the next one, or do you only
want to test it does indeed compile?


Segher

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