From: Jan Hubicka <jh@suse.cz>
Date: Sat, 21 Feb 2004 00:34:46 +0000 (+0100)
Subject: params.def (max-peeled-insns, [...]): Set to 400.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=701ad47e98c79fdeba475b499311d821d3dd3704;p=gcc.git

params.def (max-peeled-insns, [...]): Set to 400.


	* params.def (max-peeled-insns, max-completely-peeled-insns,
	max-once-peeled-insns): Set to 400.

From-SVN: r78201
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 9f0bf7baafb..6dd4649f26b 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2004-02-21  Jan Hubicka  <jh@suse.cz>
+
+	* params.def (max-peeled-insns, max-completely-peeled-insns,
+	max-once-peeled-insns): Set to 400.
+
 2004-02-20  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>
 
         PR c++/12007
diff --git a/gcc/params.def b/gcc/params.def
index 5642be4ad7b..3d5a6b70a2a 100644
--- a/gcc/params.def
+++ b/gcc/params.def
@@ -133,7 +133,12 @@ DEFPARAM(PARAM_MAX_GCSE_PASSES,
 	1)
 
 /* This parameter limits the number of insns in a loop that will be unrolled,
-   and by how much the loop is unrolled.  */
+   and by how much the loop is unrolled.
+   
+   This limit should be at most half of the peeling limits:  loop unroller
+   decides to not unroll loops that iterate fewer than 2*number of allowed
+   unrollings and thus we would have loops that are neither peeled or unrooled
+   otherwise.  */
 DEFPARAM(PARAM_MAX_UNROLLED_INSNS,
 	 "max-unrolled-insns",
 	 "The maximum number of instructions to consider to unroll in a loop",
@@ -153,7 +158,7 @@ DEFPARAM(PARAM_MAX_UNROLL_TIMES,
 DEFPARAM(PARAM_MAX_PEELED_INSNS,
 	"max-peeled-insns",
 	"The maximum number of insns of a peeled loop",
-	120)
+	400)
 /* The maximum number of peelings of a single loop.  */
 DEFPARAM(PARAM_MAX_PEEL_TIMES,
 	"max-peel-times",
@@ -163,7 +168,7 @@ DEFPARAM(PARAM_MAX_PEEL_TIMES,
 DEFPARAM(PARAM_MAX_COMPLETELY_PEELED_INSNS,
 	"max-completely-peeled-insns",
 	"The maximum number of insns of a completely peeled loop",
-	120)
+	400)
 /* The maximum number of peelings of a single loop that is peeled completely.  */
 DEFPARAM(PARAM_MAX_COMPLETELY_PEEL_TIMES,
 	"max-completely-peel-times",
@@ -173,7 +178,7 @@ DEFPARAM(PARAM_MAX_COMPLETELY_PEEL_TIMES,
 DEFPARAM(PARAM_MAX_ONCE_PEELED_INSNS,
 	"max-once-peeled-insns",
 	"The maximum number of insns of a peeled loop that rolls only once",
-	200)
+	400)
 
 /* The maximum number of insns of an unswitched loop.  */
 DEFPARAM(PARAM_MAX_UNSWITCH_INSNS,