Re: [PATCH 1/9] rs6000: Change how we model the carry bit

2014-09-21 Thread David Edelsohn
On Sat, Sep 20, 2014 at 2:23 PM, Segher Boessenkool wrote: > Make the carry bit non-allocatable (i.e., of class NO_REGS). It will > only ever be assigned to explicitly by machine patterns. Let it have > mode SI or DI (if compiling for 64-bit), even though it only ever > contains 0 or 1, so that

[PATCH 1/9] rs6000: Change how we model the carry bit

2014-09-20 Thread Segher Boessenkool
This series handles most of the "small" changes for handling the carry bit; it does not touch the "add" and scc patterns yet, and no pattern sets or uses the carry yet either (only clobbers). Tested as usual, no regressions. Are these okay to apply? Segher - - - Make the carry bit non-alloc