subject:"cond_exec no\-ops in RTL optimisations"

Re: cond_exec no-ops in RTL optimisations

2013-03-27 Thread Eric Botcazou

> While working with some splitters I noticed that the RTL optimisation > passes do not optimise away a no-op wrapped in a cond_exec. > > So for example, if my splitter generates something like: > (cond_exec (lt:SI (reg:CC CC_REGNUM) (const_int 0)) >(set (match_dup 1) >

cond_exec no-ops in RTL optimisations

2013-03-26 Thread Kyrylo Tkachov

Hi everyone, While working with some splitters I noticed that the RTL optimisation passes do not optimise away a no-op wrapped in a cond_exec. So for example, if my splitter generates something like: (cond_exec (lt:SI (reg:CC CC_REGNUM) (const_int 0)) (set (match_dup 1)