Patch for scan_loop [Re: EGCS EXTREME optimization times...]

Jeffrey A Law law@hurl.cygnus.com
Sat Feb 13 21:46:00 GMT 1999


  In message < 99021321575600.00950@ns1102.munich.netsurf.de >you write:

  FAIL: gcc.c-torture/compile/980329-1.c,  -O2 -fomit-frame-pointer
  > -finline-functions -funroll-all-loops
  > 
  > I'm a little bit worried about that, cause this thread implied that this
  > patch should only improve compilation speed and not change the behaviour
  > of the compiler.
  > 
  > Thoughts?
Odd.  Debug it.

ie, first verify that it actually changed the code and that we're not getting
some spurious testing problem.

Then we'll start looking at the loop dumps to see what changed.

This is a prime opportunity to learn a little about debugging testcases, then
debugging the compiler.

jeff


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