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| author | Jan Hubicka <jh@suse.cz> | 2010-09-03 12:15:54 +0200 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2010-09-03 10:15:54 +0000 |
| commit | 155c92a7a0a4ce7738d1d8851e572ea790f34ffb (patch) | |
| tree | 557b00c4e086e7d798393273321f3907a7d16cb4 /gcc/gimple-fold.c | |
| parent | cb1b497ec14f9e4c5ef5e15a8a0b2f454f5a1dfc (diff) | |
| download | gcc-155c92a7a0a4ce7738d1d8851e572ea790f34ffb.zip gcc-155c92a7a0a4ce7738d1d8851e572ea790f34ffb.tar.gz gcc-155c92a7a0a4ce7738d1d8851e572ea790f34ffb.tar.bz2 | |
cgraph.h (struct varpool_node): Add const_value_known.
* cgraph.h (struct varpool_node): Add const_value_known.
(varpool_decide_const_value_known): Declare.
* tree-ssa-ccp.c (fold_const_aggregate_ref): Update initializer folding.
* lto-cgraph.c (lto_output_varpool_node): Store const_value_known.
(input_varpool_node): Restore const_value_known.
* tree-ssa-loop-ivcanon (constant_after_peeling): Check varpool for
initializer folding.
* ipa.c (ipa_discover_readonly_nonaddressable_var,
function_and_variable_visibility): Compute const_value_known.
* gimple-fold.c (get_symbol_constant_value): Use varpool for initializer
folding.
* varpool.c (varpool_decide_const_value_known): New function.
From-SVN: r163808
Diffstat (limited to 'gcc/gimple-fold.c')
| -rw-r--r-- | gcc/gimple-fold.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/gcc/gimple-fold.c b/gcc/gimple-fold.c index 8a48316..033023a 100644 --- a/gcc/gimple-fold.c +++ b/gcc/gimple-fold.c @@ -38,9 +38,9 @@ along with GCC; see the file COPYING3. If not see tree get_symbol_constant_value (tree sym) { - if (TREE_STATIC (sym) - && (TREE_READONLY (sym) - || TREE_CODE (sym) == CONST_DECL)) + if ((TREE_STATIC (sym) || DECL_EXTERNAL (sym)) + && (TREE_CODE (sym) == CONST_DECL + || varpool_get_node (sym)->const_value_known)) { tree val = DECL_INITIAL (sym); if (val) @@ -65,8 +65,6 @@ get_symbol_constant_value (tree sym) have zero as the initializer if they may not be overridden at link or run time. */ if (!val - && !DECL_EXTERNAL (sym) - && targetm.binds_local_p (sym) && (INTEGRAL_TYPE_P (TREE_TYPE (sym)) || SCALAR_FLOAT_TYPE_P (TREE_TYPE (sym)))) return fold_convert (TREE_TYPE (sym), integer_zero_node); |