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loop-invariant.c (move_loop_invariants): Fix a thinko in the previous checkin. 

* loop-invariant.c (move_loop_invariants): Fix a thinko in the
	previous checkin.

From-SVN: r106809
This commit is contained in:
Steven Bosscher 2005-11-12 00:09:48 +00:00 committed by Steven Bosscher
parent 6c14b137a9
commit b644b21144
2 changed files with 21 additions and 3 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2005-11-11 Steven Bosscher <stevenb@suse.de>
* loop-invariant.c (move_loop_invariants): Fix a thinko in the
previous checkin.
2005-11-11 Daniel Jacobowitz <dan@codesourcery.com>
* tree-ssa-dse.c (struct address_walk_data, memory_ssa_name_same)

19
gcc/loop-invariant.c
View File

@ -796,9 +796,22 @@ move_invariant_reg (struct loop *loop, unsigned invno, struct df *df)
reg = gen_reg_rtx (GET_MODE (SET_DEST (set)));
df_pattern_emit_after (df, gen_move_insn (SET_DEST (set), reg),
BLOCK_FOR_INSN (inv->insn), inv->insn);
df_pattern_emit_after (df, gen_move_insn (reg, SET_SRC (set)),
preheader, BB_END (preheader));
df_insn_delete (df, BLOCK_FOR_INSN (inv->insn), inv->insn);
/* If the SET_DEST of the invariant insn is a reg, we can just move
the insn out of the loop. Otherwise, we have to use gen_move_insn
to let emit_move_insn produce a valid instruction stream. */
if (REG_P (SET_DEST (set)))
{
SET_DEST (set) = reg;
reorder_insns (inv->insn, inv->insn, BB_END (preheader));
df_insn_modify (df, preheader, inv->insn);
}
else
{
df_pattern_emit_after (df, gen_move_insn (reg, SET_SRC (set)),
preheader, BB_END (preheader));
df_insn_delete (df, BLOCK_FOR_INSN (inv->insn), inv->insn);
}
/* Replace the uses we know to be dominated. It saves work for copy
propagation, and also it is necessary so that dependent invariants