[PATCH 5/9] S/390: Get rid of Y constraint in arithmetic right shift patterns.

The arithmetic shift patterns set also the condition code. This adds more substitution potential. Depending on whether the actual result or the CC output will be used 3 different variants of each of these patterns are needed. This multiplied with the PLUS and the AND operands from the earlier su

[PATCH 5/9] S/390: Get rid of Y constraint in arithmetic right shift patterns.

The arithmetic shift patterns set also the condition code. This adds more substitution potential. Depending on whether the actual result or the CC output will be used 3 different variants of each of these patterns are needed. This multiplied with the PLUS and the AND operands from the earlier su

Re: [PATCH 5/9] S/390: Get rid of Y constraint in arithmetic right shift patterns.

On 02/01/2016 02:35 PM, Ulrich Weigand wrote: > Andreas Krebbel wrote: > >> +; This is like the addr_style_op substitution above but with a CC clobber. >> +(define_subst "addr_style_op_cc_subst" > >> +; This is like the masked_op substitution but with a CC clobber. >> +(define_subst "masked_op_cc

Re: [PATCH 5/9] S/390: Get rid of Y constraint in arithmetic right shift patterns.

Andreas Krebbel wrote: > +; This is like the addr_style_op substitution above but with a CC clobber. > +(define_subst "addr_style_op_cc_subst" > +; This is like the masked_op substitution but with a CC clobber. > +(define_subst "masked_op_cc_subst" A bit unfortunate that these need to be duplica

[PATCH 5/9] S/390: Get rid of Y constraint in arithmetic right shift patterns.

The arithmetic shift patterns set also the condition code. This adds more substitution potential. Depending on whether the actual result or the CC output will be used 3 different variants of each of these patterns are needed. This multiplied with the PLUS and the AND operands from the earlier su