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re PR bootstrap/36864 (Yet another bootstrap failure on i686-apple-darwin9) 

2008-07-19  Richard Guenther  <rguenther@suse.de>

	PR bootstrap/36864
	* tree-ssa-sccvn.h (get_constant_value_id): Declare.
	* tree-ssa-sccvn.c (get_constant_value_id): New function.
	* tree-ssa-pre.c (get_expr_value_id): For newly created
	constant value-ids make sure to add the expression to its
	expression-set.

From-SVN: r137991
This commit is contained in:
Richard Guenther 2008-07-19 20:02:29 +00:00 committed by Andreas Tobler
parent 52e07aa164
commit bb9e419935
4 changed files with 38 additions and 1 deletions
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9
gcc/ChangeLog
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@ -1,3 +1,12 @@
2008-07-19 Richard Guenther <rguenther@suse.de>
PR bootstrap/36864
* tree-ssa-sccvn.h (get_constant_value_id): Declare.
* tree-ssa-sccvn.c (get_constant_value_id): New function.
* tree-ssa-pre.c (get_expr_value_id): For newly created
constant value-ids make sure to add the expression to its
expression-set.
2008-07-19 Jakub Jelinek <jakub@redhat.com>
PR middle-end/36877

11
gcc/tree-ssa-pre.c
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@ -599,7 +599,16 @@ get_expr_value_id (pre_expr expr)
switch (expr->kind)
{
case CONSTANT:
return get_or_alloc_constant_value_id (PRE_EXPR_CONSTANT (expr));
{
unsigned int id;
id = get_constant_value_id (PRE_EXPR_CONSTANT (expr));
if (id == 0)
{
id = get_or_alloc_constant_value_id (PRE_EXPR_CONSTANT (expr));
add_to_value (id, expr);
}
return id;
}
case NAME:
return VN_INFO (PRE_EXPR_NAME (expr))->value_id;
case NARY:

18
gcc/tree-ssa-sccvn.c
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@ -248,6 +248,24 @@ vn_constant_hash (const void *p1)
return vc1->hashcode;
}
/* Lookup a value id for CONSTANT and return it. If it does not
exist returns 0. */
unsigned int
get_constant_value_id (tree constant)
{
void **slot;
struct vn_constant_s vc;
vc.hashcode = iterative_hash_expr (constant, 0);
vc.constant = constant;
slot = htab_find_slot_with_hash (constant_to_value_id, &vc,
vc.hashcode, NO_INSERT);
if (slot)
return ((vn_constant_t)*slot)->value_id;
return 0;
}
/* Lookup a value id for CONSTANT, and if it does not exist, create a
new one and return it. If it does exist, return it. */

1
gcc/tree-ssa-sccvn.h
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@ -163,6 +163,7 @@ hashval_t vn_reference_compute_hash (const vn_reference_t);
int vn_reference_eq (const void *, const void *);
unsigned int get_max_value_id (void);
unsigned int get_next_value_id (void);
unsigned int get_constant_value_id (tree);
unsigned int get_or_alloc_constant_value_id (tree);
bool value_id_constant_p (unsigned int);
VEC (tree, gc) *shared_vuses_from_stmt (tree);