Re: A question about DOM

2005-02-28 Thread Jeffrey A Law
On Sun, 2005-02-27 at 18:16 -0500, Kazu Hirata wrote: > Hi, > > Consider the following code from > tree-ssa-dom.c:tree_ssa_dominator_optimize. > > /* Thread jumps, creating duplicate blocks as needed. */ > cfg_altered = thread_through_all_blocks (); > > /* Removal of statement

A question about DOM

2005-02-27 Thread Kazu Hirata
Hi, Consider the following code from tree-ssa-dom.c:tree_ssa_dominator_optimize. /* Thread jumps, creating duplicate blocks as needed. */ cfg_altered = thread_through_all_blocks (); /* Removal of statements may make some EH edges dead. Purge such edges from the CFG a