/* Predictive commoning.
- Copyright (C) 2005, 2007, 2008, 2009 Free Software Foundation, Inc.
+ Copyright (C) 2005, 2007, 2008, 2009, 2010
+ Free Software Foundation, Inc.
This file is part of GCC.
#include "tree-chrec.h"
#include "params.h"
#include "diagnostic.h"
+#include "tree-pretty-print.h"
+#include "gimple-pretty-print.h"
#include "tree-pass.h"
#include "tree-affine.h"
#include "tree-inline.h"
unsigned i;
dref a;
chain_p chain = NULL;
+ double_int last_ofs = double_int_zero;
/* Invariants are handled specially. */
if (comp->comp_step == RS_INVARIANT)
for (i = 0; VEC_iterate (dref, comp->refs, i, a); i++)
{
- if (!chain || !DR_IS_READ (a->ref))
+ if (!chain || !DR_IS_READ (a->ref)
+ || double_int_ucmp (uhwi_to_double_int (MAX_DISTANCE),
+ double_int_add (a->offset,
+ double_int_neg (last_ofs))) <= 0)
{
if (nontrivial_chain_p (chain))
- VEC_safe_push (chain_p, heap, *chains, chain);
+ {
+ add_looparound_copies (loop, chain);
+ VEC_safe_push (chain_p, heap, *chains, chain);
+ }
else
release_chain (chain);
chain = make_rooted_chain (a);
+ last_ofs = a->offset;
continue;
}
else if (!INDIRECT_REF_P (ref))
return unshare_expr (ref);
- if (TREE_CODE (ref) == INDIRECT_REF)
+ if (INDIRECT_REF_P (ref))
{
- ret = build1 (INDIRECT_REF, TREE_TYPE (ref), NULL_TREE);
+ /* Take care for INDIRECT_REF and MISALIGNED_INDIRECT_REF at
+ the same time. */
+ ret = copy_node (ref);
idx = TREE_OPERAND (ref, 0);
idx_p = &TREE_OPERAND (ret, 0);
}
predcom_tmp_var (tree ref, unsigned i, bitmap tmp_vars)
{
tree type = TREE_TYPE (ref);
- tree var = create_tmp_var (type, get_lsm_tmp_name (ref, i));
-
/* We never access the components of the temporary variable in predictive
commoning. */
- if (TREE_CODE (type) == COMPLEX_TYPE
- || TREE_CODE (type) == VECTOR_TYPE)
- DECL_GIMPLE_REG_P (var) = 1;
+ tree var = create_tmp_reg (type, get_lsm_tmp_name (ref, i));
add_referenced_var (var);
bitmap_set_bit (tmp_vars, DECL_UID (var));
{
gimple stmt, phi;
imm_use_iterator iter;
- edge e;
SSA_NAME_VAR (name) = var;
if (!phi)
return;
- if (gimple_bb (phi) == loop->header)
- e = loop_latch_edge (loop);
- else
- e = single_pred_edge (gimple_bb (stmt));
-
name = PHI_RESULT (phi);
SSA_NAME_VAR (name) = var;
}
/* Insert the new statement combining NAME1 and NAME2 before S1, and
combine it with the rhs of S1. */
- var = create_tmp_var (type, "predreastmp");
+ var = create_tmp_reg (type, "predreastmp");
add_referenced_var (var);
new_name = make_ssa_name (var, NULL);
new_stmt = gimple_build_assign_with_ops (code, new_name, name1, name2);
- var = create_tmp_var (type, "predreastmp");
+ var = create_tmp_reg (type, "predreastmp");
add_referenced_var (var);
tmp_name = make_ssa_name (var, NULL);
tree rslt_type = NULL_TREE;
if (ch1 == ch2)
- return false;
+ return NULL;
if (ch1->length != ch2->length)
return NULL;