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tree-cfg.c (gimple_split_edge): Avoid reallocating target PHI nodes.

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2017-08-22  Richard Biener  <rguenther@suse.de>

	* tree-cfg.c (gimple_split_edge): Avoid reallocating target
	PHI nodes.

From-SVN: r251264
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Richard Biener 2017-08-22 09:04:28 +00:00 committed by Richard Biener
parent 1823c4f69b
commit 2df8ab3dba
2 changed files with 7 additions and 1 deletions
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gcc/ChangeLog
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@ -1,3 +1,8 @@
2017-08-22 Richard Biener <rguenther@suse.de>
* tree-cfg.c (gimple_split_edge): Avoid reallocating target
PHI nodes.
2017-08-22 Richard Biener <rguenther@suse.de>
* common.opt (feliminate-dwarf2-dups): Ignore.

3
gcc/tree-cfg.c
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@ -2844,10 +2844,11 @@ gimple_split_edge (edge edge_in)
new_bb = create_empty_bb (after_bb);
new_bb->frequency = EDGE_FREQUENCY (edge_in);
new_bb->count = edge_in->count;
new_edge = make_single_succ_edge (new_bb, dest, EDGE_FALLTHRU);
e = redirect_edge_and_branch (edge_in, new_bb);
gcc_assert (e == edge_in);
new_edge = make_single_succ_edge (new_bb, dest, EDGE_FALLTHRU);
reinstall_phi_args (new_edge, e);
return new_bb;