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c-common.c (c_estimate_num_insns_1): Handle builtin_constant_p and builtin_expect specially.

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* c-common.c (c_estimate_num_insns_1): Handle builtin_constant_p and
	builtin_expect specially.
	* params.def (PARAM_MAX_INLINE_INSNS_AUTO): Set to 100.
	(PARAM_LARGE_FUNCTION_INSNS): Set to 3000.
	* invoke.texi (max-inline-insns-single): Set to 100.
	(large-function-insns): Set to 3000.

From-SVN: r76007
This commit is contained in:
Jan Hubicka 2004-01-17 01:03:14 +01:00 committed by Jan Hubicka
parent d440f6424f
commit 3b75d796ac
4 changed files with 31 additions and 5 deletions
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9
gcc/ChangeLog
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@ -1,3 +1,12 @@
2004-01-17 Jan Hubicka <jh@suse.cz>
* c-common.c (c_estimate_num_insns_1): Handle builtin_constant_p and
builtin_expect specially.
* params.def (PARAM_MAX_INLINE_INSNS_AUTO): Set to 100.
(PARAM_LARGE_FUNCTION_INSNS): Set to 3000.
* invoke.texi (max-inline-insns-single): Set to 100.
(large-function-insns): Set to 3000.
2004-01-16 Eric Christopher <echristo@redhat.com>
Chandrakala Chavva <cchavva@redhat.com>

19
gcc/c-common.c
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@ -5780,6 +5780,24 @@ c_estimate_num_insns_1 (tree *tp, int *walk_subtrees, void *data)
*count += ((size + MOVE_MAX_PIECES - 1) / MOVE_MAX_PIECES);
}
break;
case CALL_EXPR:
{
tree decl = get_callee_fndecl (x);
if (decl && DECL_BUILT_IN (decl))
switch (DECL_FUNCTION_CODE (decl))
{
case BUILT_IN_CONSTANT_P:
*walk_subtrees = 0;
return NULL_TREE;
case BUILT_IN_EXPECT:
return NULL_TREE;
default:
break;
}
*count += 10;
break;
}
/* Few special cases of expensive operations. This is usefull
to avoid inlining on functions having too many of these. */
case TRUNC_DIV_EXPR:
@ -5791,7 +5809,6 @@ c_estimate_num_insns_1 (tree *tp, int *walk_subtrees, void *data)
case FLOOR_MOD_EXPR:
case ROUND_MOD_EXPR:
case RDIV_EXPR:
case CALL_EXPR:
*count += 10;
break;
/* Various containers that will produce no code themselves. */

4
gcc/doc/invoke.texi
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@ -4715,7 +4715,7 @@ a lot of functions that would otherwise not be considered for inlining
by the compiler will be investigated. To those functions, a different
(more restrictive) limit compared to functions declared inline can
be applied.
The default value is 150.
The default value is 120.
@item large-function-insns
The limit specifying really large functions. For functions greater than this
@ -4723,7 +4723,7 @@ limit inlining is constrained by @option{--param large-function-growth}.
This parameter is useful primarily to avoid extreme compilation time caused by non-linear
algorithms used by the backend.
This parameter is ignored when @option{-funit-at-a-time} is not used.
The default value is 30000.
The default value is 3000.
@item large-function-growth
Specifies maximal growth of large functtion caused by inlining in percents.

4
gcc/params.def
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@ -63,7 +63,7 @@ DEFPARAM (PARAM_MAX_INLINE_INSNS_SINGLE,
DEFPARAM (PARAM_MAX_INLINE_INSNS_AUTO,
"max-inline-insns-auto",
"The maximum number of instructions when automatically inlining",
150)
120)
/* For languages that (still) use the RTL inliner, we can specify
limits for the RTL inliner separately.
@ -110,7 +110,7 @@ DEFPARAM(PARAM_MAX_PENDING_LIST_LENGTH,
DEFPARAM(PARAM_LARGE_FUNCTION_INSNS,
"large-function-insns",
"The size of function body to be considered large",
10000)
3000)
DEFPARAM(PARAM_LARGE_FUNCTION_GROWTH,
"large-function-growth",
"Maximal growth due to inlining of large function (in percent)",