diff options
Diffstat (limited to 'gcc/tree-ssa-threadupdate.c')
| -rw-r--r-- | gcc/tree-ssa-threadupdate.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/gcc/tree-ssa-threadupdate.c b/gcc/tree-ssa-threadupdate.c index 3597021..54f87af 100644 --- a/gcc/tree-ssa-threadupdate.c +++ b/gcc/tree-ssa-threadupdate.c @@ -1,5 +1,6 @@ /* Thread edges through blocks and update the control flow and SSA graphs. - Copyright (C) 2004, 2005, 2006, 2007 Free Software Foundation, Inc. + Copyright (C) 2004, 2005, 2006, 2007, 2008 Free Software Foundation, + Inc. This file is part of GCC. @@ -71,7 +72,7 @@ along with GCC; see the file COPYING3. If not see 7. Put the duplicated resources in B and all the B' blocks into SSA form. Note that block duplication can be minimized by first collecting the - the set of unique destination blocks that the incoming edges should + set of unique destination blocks that the incoming edges should be threaded to. Block duplication can be further minimized by using B instead of creating B' for one destination if all edges into B are going to be threaded to a successor of B. @@ -1089,7 +1090,7 @@ thread_through_all_blocks (bool may_peel_loop_headers) threading opportunities discovered by a pass and update the CFG and SSA form all at once. - E is the edge we can thread, E2 is the new target edge. ie, we + E is the edge we can thread, E2 is the new target edge, i.e., we are effectively recording that E->dest can be changed to E2->dest after fixing the SSA graph. */ |