Re: [RFC][PATCH, rs6000] Replace X-form addressing with D-form addressing in new pass for Power9

2018-11-16 Thread Segher Boessenkool
On Sat, Nov 10, 2018 at 11:36:28AM -0600, Kelvin Nilsen wrote: > This new pass scans existing rtl expressions and replaces them with rtl > expressions that favor selection of the D-form instructions in contexts for > which the D-form instructions are preferred. (Here would be a good place to

[RFC][PATCH, rs6000] Replace X-form addressing with D-form addressing in new pass for Power9

2018-11-10 Thread Kelvin Nilsen
New D-form instructions available on Power9 introduce new code generation options that result in more efficient execution. This new pass scans existing rtl expressions and replaces them with rtl expressions that favor selection of the D-form instructions in contexts for which the D-form