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| author | Eric Botcazou <ebotcazou@gcc.gnu.org> | 2011-03-21 12:11:06 +0000 |
|---|---|---|
| committer | Eric Botcazou <ebotcazou@gcc.gnu.org> | 2011-03-21 12:11:06 +0000 |
| commit | 646f94144c017251b6a4eff7bbf74da43201cea1 (patch) | |
| tree | f1ec6d9682d666e81c7acf43d8f1b277617396f6 /gcc/ada/gcc-interface/decl.c | |
| parent | eb97510932f53389907b8f0a20fdc37acdf62f1b (diff) | |
| download | gcc-646f94144c017251b6a4eff7bbf74da43201cea1.zip gcc-646f94144c017251b6a4eff7bbf74da43201cea1.tar.gz gcc-646f94144c017251b6a4eff7bbf74da43201cea1.tar.bz2 | |
decl.c (elaborate_expression_1): When optimization is disabled, use the variable for bounds of loop iteration scheme.
* gcc-interface/decl.c (elaborate_expression_1): When optimization is
disabled, use the variable for bounds of loop iteration scheme.
From-SVN: r171220
Diffstat (limited to 'gcc/ada/gcc-interface/decl.c')
| -rw-r--r-- | gcc/ada/gcc-interface/decl.c | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/gcc/ada/gcc-interface/decl.c b/gcc/ada/gcc-interface/decl.c index 696e49a..f254ac4 100644 --- a/gcc/ada/gcc-interface/decl.c +++ b/gcc/ada/gcc-interface/decl.c @@ -6004,7 +6004,7 @@ elaborate_expression_1 (tree gnu_expr, Entity_Id gnat_entity, tree gnu_name, bool definition, bool need_debug) { const bool expr_global_p = Is_Public (gnat_entity) || global_bindings_p (); - bool expr_variable_p; + bool expr_variable_p, use_variable; tree gnu_decl; /* In most cases, we won't see a naked FIELD_DECL because a discriminant @@ -6058,8 +6058,18 @@ elaborate_expression_1 (tree gnu_expr, Entity_Id gnat_entity, tree gnu_name, && (TREE_READONLY (inner) || DECL_READONLY_ONCE_ELAB (inner))); } - /* Now create the variable if we need it. */ - if (need_debug || (expr_variable_p && expr_global_p)) + /* We only need to use the variable if we are in a global context since GCC + can do the right thing in the local case. However, when not optimizing, + use it for bounds of loop iteration scheme to avoid code duplication. */ + use_variable = expr_variable_p + && (expr_global_p + || (!optimize + && Is_Itype (gnat_entity) + && Nkind (Associated_Node_For_Itype (gnat_entity)) + == N_Loop_Parameter_Specification)); + + /* Now create it, possibly only for debugging purposes. */ + if (use_variable || need_debug) gnu_decl = create_var_decl (create_concat_name (gnat_entity, IDENTIFIER_POINTER (gnu_name)), @@ -6067,9 +6077,7 @@ elaborate_expression_1 (tree gnu_expr, Entity_Id gnat_entity, tree gnu_name, !need_debug, Is_Public (gnat_entity), !definition, expr_global_p, NULL, gnat_entity); - /* We only need to use this variable if we are in global context since GCC - can do the right thing in the local case. */ - if (expr_global_p && expr_variable_p) + if (use_variable) return gnu_decl; return expr_variable_p ? gnat_save_expr (gnu_expr) : gnu_expr; |