On Mon, 13 May 2019, Segher Boessenkool wrote: > On Sun, May 12, 2019 at 10:07:28PM -0500, Jiufu Guo wrote: > > To elimiate the instructions which moving result of CMP to GPR, I'm > > wondering maybe we could do a combine(or a peephole) after bbro to let > > the condition jump directly using the result of CMP. > > It will have to be a peephole. And peepholes are machine-specific. > > You will also not get any further optimisations in those blocks, that way; > not combine etc. > > It really should be done on gimple, not rtl.
Agreed.
