RE: [PATCH GCC]Improve IVOPT to handle outside and inside loop iv uses differently in GCC

iener; o...@ucw.cz > Subject: [PATCH GCC]Improve IVOPT to handle outside and inside loop iv > uses differently in GCC > > Hi, > GCC IVOPT has a problem that it doesn't differentiate between iv uses > outside of loop from inside ones. It computes cost for outside iv use just l

[PATCH GCC]Improve IVOPT to handle outside and inside loop iv uses differently in GCC

Hi, GCC IVOPT has a problem that it doesn't differentiate between iv uses outside of loop from inside ones. It computes cost for outside iv use just like inside ones, which is wrong because outside iv use should be computed along loop exit edge and the cost should be amortized against loop iterati