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[patch] tree-ssa-propagate.c: Remove stmt_makes_single_load.
- From: kazu at codesourcery dot com (Kazu Hirata)
- To: gcc-patches at gcc dot gnu dot org
- Date: Thu, 16 Apr 2009 01:06:12 -0700 (PDT)
- Subject: [patch] tree-ssa-propagate.c: Remove stmt_makes_single_load.
Hi,
Attached is a patch to remove stmt_makes_single_load.
AFAICT, stmt_makes_single_load has been unused since Revision 139764.
Bootstrapped on x86_64-pc-linux-gnu. OK to apply?
Kazu Hirata
2009-04-16 Kazu Hirata <kazu@codesourcery.com>
* tree-ssa-propagate.c (stmt_makes_single_load): Remove.
* tree-ssa-propagate.h: Remove the prototype for
stmt_makes_single_load.
Index: gcc/tree-ssa-propagate.c
===================================================================
--- gcc/tree-ssa-propagate.c (revision 146080)
+++ gcc/tree-ssa-propagate.c (working copy)
@@ -828,36 +828,6 @@ ssa_propagate (ssa_prop_visit_stmt_fn vi
}
-/* Return true if STMT is of the form 'LHS = mem_ref', where 'mem_ref'
- is a non-volatile pointer dereference, a structure reference or a
- reference to a single _DECL. Ignore volatile memory references
- because they are not interesting for the optimizers. */
-
-bool
-stmt_makes_single_load (gimple stmt)
-{
- tree rhs;
-
- if (gimple_code (stmt) != GIMPLE_ASSIGN)
- return false;
-
- /* Only a GIMPLE_SINGLE_RHS assignment may have a
- declaration or reference as its RHS. */
- if (get_gimple_rhs_class (gimple_assign_rhs_code (stmt))
- != GIMPLE_SINGLE_RHS)
- return false;
-
- if (!gimple_vuse (stmt))
- return false;
-
- rhs = gimple_assign_rhs1 (stmt);
-
- return (!TREE_THIS_VOLATILE (rhs)
- && (DECL_P (rhs)
- || REFERENCE_CLASS_P (rhs)));
-}
-
-
/* Return true if STMT is of the form 'mem_ref = RHS', where 'mem_ref'
is a non-volatile pointer dereference, a structure reference or a
reference to a single _DECL. Ignore volatile memory references
Index: gcc/tree-ssa-propagate.h
===================================================================
--- gcc/tree-ssa-propagate.h (revision 146080)
+++ gcc/tree-ssa-propagate.h (working copy)
@@ -118,7 +118,6 @@ bool valid_gimple_rhs_p (tree);
bool valid_gimple_call_p (tree);
void move_ssa_defining_stmt_for_defs (gimple, gimple);
bool update_call_from_tree (gimple_stmt_iterator *, tree);
-bool stmt_makes_single_load (gimple);
bool stmt_makes_single_store (gimple);
bool substitute_and_fold (prop_value_t *, bool);