https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98782
--- Comment #26 from hubicka at kam dot mff.cuni.cz --- > It's with LTO, I'll see if non-LTO has the same benefit. In terms of > code-size > it looks like it accounts for a 20% increase for binary size, but the hot > function shrinks approx 6x. But of course this increase covers the entire > binaries and there are other hot functions like GetVirtualPixelsFromNexus that > also shrink significantly when specialized. Thanks. I will check this. We mey need tweaking cost model to first specialize the functions that reduce more (by doing multiple passes with decreasing threshold) It is really nice to see some real improvmeents from ipa-cp. For years the pass did almost nothing on the benchmarks I tested (spec, Firefox, clang) but it has changed. I also see measurable speedups on clang binary with ipa-cp on.
