invoke.texi (-fipa-cp): Enabled by default at -O2/-Os/-O3

	* doc/invoke.texi (-fipa-cp): Enabled by default at -O2/-Os/-O3
	(-fipa-cp-clone): Enabled by default at -O3.
	* opts.c (decode_options): Enable ipa-cp at -O2, ipa-cp-clone at -O3;
	make ipa-cp-clone to imply ipa-cp; disable cloning at -Os.

From-SVN: r139762

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index c85ac793914274645718533ff34557e7df864460..3b80285fd912693be14167dc4d3dbdee6377e3e5 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2008-08-29  Jan Hubicka  <jh@suse.cz>
+
+       * doc/invoke.texi (-fipa-cp): Enabled by default at -O2/-Os/-O3
+       (-fipa-cp-clone): Enabled by default at -O3.
+       * opts.c (decode_options): Enable ipa-cp at -O2, ipa-cp-clone at -O3;
+       make ipa-cp-clone to imply ipa-cp; disable cloning at -Os.
+
 2008-08-29  Jan Hubicka  <jh@suse.cz>
 
        * tree.c (build_function_type_skip_args, build_function_decl_skip_args):

diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index e1e69699e20ceb33b6c094ecfa63d32cff7b8c68..e36bbb969bcca8a0807174293f41c2fe97b9af11 100644 (file)
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -5902,6 +5902,7 @@ This optimization analyzes the program to determine when values passed
 to functions are constants and then optimizes accordingly.  
 This optimization can substantially increase performance
 if the application has constants passed to functions.
+This flag is enabled by default at @option{-O2}, @option{-Os} and @option{-O3}.
 
 @item -fipa-cp-clone
 @opindex fipa-cp-clone
@@ -5911,6 +5912,7 @@ when externally visible function can be called with constant arguments.
 Because this optimization can create multiple copies of functions,
 it may significantly increase code size
 (see @option{--param ipcp-unit-growth=@var{value}}).
+This flag is enabled by default at @option{-O3}.
 
 @item -fipa-matrix-reorg
 @opindex fipa-matrix-reorg

diff --git a/gcc/opts.c b/gcc/opts.c
index 8c46dfa9cf734c989b4cfde28f0689285f89c26d..f64d74736b2a03a110ade593c7035df4ee93fb7b 100644 (file)
--- a/gcc/opts.c
+++ b/gcc/opts.c
@@ -955,7 +955,8 @@ decode_options (unsigned int argc, const char **argv)
   flag_tree_vrp = opt2;
   flag_tree_builtin_call_dce = opt2;
   flag_tree_pre = opt2;
-      flag_tree_switch_conversion = 1;
+  flag_tree_switch_conversion = 1;
+  flag_ipa_cp = opt2;
 
       /* Allow more virtual operators to increase alias precision.  */
 
@@ -973,6 +974,9 @@ decode_options (unsigned int argc, const char **argv)
   flag_unswitch_loops = opt3;
   flag_gcse_after_reload = opt3;
   flag_tree_vectorize = opt3;
+  flag_ipa_cp_clone = opt3;
+  if (flag_ipa_cp_clone)
+    flag_ipa_cp = 1;
 
   /* Allow even more virtual operators.  Max-aliased-vops was set above for
      -O2, so don't reset it unless we are at -O3.  */
@@ -1028,6 +1032,9 @@ decode_options (unsigned int argc, const char **argv)
 
       /* We want to crossjump as much as possible.  */
       set_param_value ("min-crossjump-insns", 1);
+
+      /* Do not perform clonning in ipcp.  */
+      flag_ipa_cp_clone = 0;
     }
   else
     set_param_value ("min-crossjump-insns", initial_min_crossjump_insns);