Re: RFC: seeking insight on store_data_bypass_p (recog.c)

2017-04-24 Thread Jeff Law
On 04/14/2017 09:58 AM, Richard Sandiford wrote: .md files do have the option of using a single rtl instruction to represent a sequence of several machine instructions but: (a) they're then effectively asking the target-independent code to treat the sequence "as-if" it was a single indivis

Re: RFC: seeking insight on store_data_bypass_p (recog.c)

2017-04-14 Thread Richard Sandiford
Pat Haugen writes: > On 04/12/2017 06:33 PM, Kelvin Nilsen wrote: >> >> 1. As input arguments, out_insn represents an rtl expression that >> potentially "produces" a store to memory and in_insn represents an rtl >> expression that potentially "consumes" a value recently stored to memory. >> > Yo

Re: RFC: seeking insight on store_data_bypass_p (recog.c)

2017-04-13 Thread Pat Haugen
On 04/12/2017 06:33 PM, Kelvin Nilsen wrote: > > 1. As input arguments, out_insn represents an rtl expression that > potentially "produces" a store to memory and in_insn represents an rtl > expression that potentially "consumes" a value recently stored to memory. > You have this reversed, the cod