Andrew Haley <[EMAIL PROTECTED]> writes: > Sergei Organov writes: > > Hi, > > > > Using gcc compiled from gcc-4_0-branch, in an attempt to see which > > particular optimization option makes my test case to be mis-optimized, I > > try to replace -O1 (which toggles on the problem) with corresponding set > > of -fxxx optimization options. > > In general you can't do this. You can turn some optimization passes > off, though.
Sigh :( > > > How one finds out what optimization pass misbehaves? > > Look at the dumps. If you use the gcc option -da you'll get a full > set of RTL dump files. I'm afraid that it's one of the tree optimization passes as const.cc.00.expand is already [mis]optimized the way I don't like. -- Sergei.
