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[root@cerebro.laendle: INTEGRATE_THRESHOLD patch]
- To: egcs at cygnus dot com
- Subject: [root@cerebro.laendle: INTEGRATE_THRESHOLD patch]
- From: Marc Lehmann <pcg at goof dot com>
- Date: Tue, 3 Feb 1998 20:41:18 +0100
Sorry, the original mail never showed up on the egcs-list (at least not in
my copy ;), so I re-send it. sorry if it's a duplicate.
-----Forwarded message from Marc Lehmann <root@cerebro.laendle>-----
From: Marc Lehmann <root@cerebro.laendle>
To: egcs@cygnus.com
Subject: INTEGRATE_THRESHOLD patch
Here's the revised version, doing it in the architecture independent part.
Now we can argue about the 1 + 1.5 * nargs formula ;)
1998-02-02 Marc Lehmann <pcg@goof.com>
* integrate.c (INTEGRATE_THRESHOLD): Inline only small functions
when -Os is specified.
* toplev.c (main): Don't disable flag_inline_functions anymore when
-Os is in effect.
Index: egcs/gcc/integrate.c
===================================================================
RCS file: /home/cvsroot/egcs/gcc/integrate.c,v
retrieving revision 1.1.1.9
diff -u -p -u -p -r1.1.1.9 integrate.c
--- integrate.c 1998/01/23 21:43:57 1.1.1.9
+++ integrate.c 1998/02/02 04:01:29
@@ -52,8 +52,12 @@ extern tree poplevel ();
/* Default max number of insns a function can have and still be inline.
This is overridden on RISC machines. */
#ifndef INTEGRATE_THRESHOLD
+/* Inlining small functions might save more space then not inlining at
+ all. Assume 1 instruction for the call and 1.5 insns per argument. */
#define INTEGRATE_THRESHOLD(DECL) \
- (8 * (8 + list_length (DECL_ARGUMENTS (DECL))))
+ (optimize_size \
+ ? (1 + (3 * list_length (DECL_ARGUMENTS (DECL)) / 2)) \
+ : (8 * (8 + list_length (DECL_ARGUMENTS (DECL)))))
#endif
static rtx initialize_for_inline PROTO((tree, int, int, int, int));
Index: egcs/gcc/toplev.c
===================================================================
RCS file: /home/cvsroot/egcs/gcc/toplev.c,v
retrieving revision 1.1.1.13
diff -u -p -u -p -r1.1.1.13 toplev.c
--- toplev.c 1998/01/30 21:56:19 1.1.1.13
+++ toplev.c 1998/02/02 03:57:15
@@ -3797,12 +3797,6 @@ main (argc, argv, envp)
flag_inline_functions = 1;
}
- /* Disable code bloating optimizations if optimizing for size. */
- if (optimize_size)
- {
- flag_inline_functions = 0;
- }
-
/* Initialize target_flags before OPTIMIZATION_OPTIONS so the latter can
modify it. */
target_flags = 0;
-----End of forwarded message-----
---------------------------------------------------------------------
for a pentium-optimizing compiler, look at http://www.gcc.ml.org/
-----==- |
----==-- _ |
---==---(_)__ __ ____ __ Marc Lehmann +--
--==---/ / _ \/ // /\ \/ / pcg@goof.com |e|
-=====/_/_//_/\_,_/ /_/\_\ --+
The choice of a GNU generation |
|