Re: [PATCH][combine][RFC][2/2] PR rtl-optimization/68796: Perfer zero_extract comparison against zero rather than unsupported shorter modes

[Bernd Schmidt]

On 12/17/2015 05:10 PM, Kyrill Tkachov wrote:
Well, this patch still produces the QImode comparison if the target has
a QImode comparison
(the have_insn_for check in the simplify_comparison hunk).

Ok, I didn't look that closely because I had doubts about the approach. 
This kind of check also goes somewhat against the principles of just 
producing canonical forms of RTL.


Bernd