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lambda-code.c (remove_iv): New.

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* lambda-code.c (remove_iv): New.
	(lambda_loopnest_to_gcc_loopnest): Use remove_iv.


Co-Authored-By: Sebastian Pop <sebpop@gmail.com>

From-SVN: r125605
This commit is contained in:
Jan Sjodin 2007-06-10 21:00:59 +00:00 • committed by Sebastian Pop
parent 79f5e44262
commit 51c0074eed
2 changed files with 48 additions and 0 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2007-06-10 Jan Sjodin <jan.sjodin@amd.com>
Sebastian Pop <sebpop@gmail.com>
* lambda-code.c (remove_iv): New.
(lambda_loopnest_to_gcc_loopnest): Use remove_iv.
2007-06-10 Zdenek Dvorak <dvorakz@suse.cz>
* tree-data-ref.c (dr_analyze_alias): Handle case smt is NULL.

42
gcc/lambda-code.c
View file

@ -1616,6 +1616,45 @@ lle_to_gcc_expression (lambda_linear_expression lle,
return force_gimple_operand (fold (expr), stmts_to_insert, true, resvar);
}
/* Remove the induction variable defined at IV_STMT. */
static void
remove_iv (tree iv_stmt)
{
if (TREE_CODE (iv_stmt) == PHI_NODE)
{
int i;
for (i = 0; i < PHI_NUM_ARGS (iv_stmt); i++)
{
tree stmt;
imm_use_iterator imm_iter;
tree arg = PHI_ARG_DEF (iv_stmt, i);
bool used = false;
if (TREE_CODE (arg) != SSA_NAME)
continue;
FOR_EACH_IMM_USE_STMT (stmt, imm_iter, arg)
if (stmt != iv_stmt)
used = true;
if (!used)
remove_iv (SSA_NAME_DEF_STMT (arg));
}
remove_phi_node (iv_stmt, NULL_TREE, true);
}
else
{
block_stmt_iterator bsi = bsi_for_stmt (iv_stmt);
bsi_remove (&bsi, true);
release_defs (iv_stmt);
}
}
/* Transform a lambda loopnest NEW_LOOPNEST, which had TRANSFORM applied to
it, back into gcc code. This changes the
loops, their induction variables, and their bodies, so that they
@ -1797,6 +1836,9 @@ lambda_loopnest_to_gcc_loopnest (struct loop *old_loopnest,
propagate_value (use_p, newiv);
update_stmt (stmt);
}
/* Remove the now unused induction variable. */
remove_iv (oldiv_stmt);
}
VEC_free (tree, heap, new_ivs);
}