compute_flow_dominators

Jeffrey A Law law@cygnus.com
Tue Nov 30 23:59:00 GMT 1999


  In message < 14374.18510.273316.680469@ongaonga.elec.canterbury.ac.nz >you writ
e:
  > 
  > The new version of compute_flow_dominators dies if there is only a
  > single basic block.
  > 
  > The following patch seems to handle the problematical case.
  > 
  > Michael.
  > 
  > 
  > Mon Nov  8 16:56:00 1999  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>
  > 
  > 	* flow.c (compute_flow_dominators): Check for exit edge from entry
  >  	block.
Instead, I'm going to find a way to make this work without flow.c knowing that
block 0 & n_basic_blocks - 1 are special.  There actually is a "reasonable"
way to do this, which Andrew and I are using in a forthcoming lcm.c change.

jeff



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