From 9c8b7028ac956395a283ec6366ac87e468891d79 Mon Sep 17 00:00:00 2001 From: jakub Date: Wed, 19 Jan 2005 09:31:16 +0000 Subject: PR rtl-optimization/15139 * combine.c: Include params.h. (count_rtxs): New function. (record_value_for_reg): If replace_rtx would replace at least 2 occurrences of REG in VALUE and TEM is really large, replace REG with (clobber (const_int 0)) instead of TEM. * params.def (PARAM_MAX_LAST_VALUE_RTL): New. * params.h (MAX_LAST_VALUE_RTL): New. * Makefile.in (combine.o): Depend on $(PARAMS_H). * doc/invoke.texi (--param max-last-value-rtl=N): Document. * gcc.dg/20050111-2.c: New test. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@93892 138bc75d-0d04-0410-961f-82ee72b054a4 --- gcc/params.def | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'gcc/params.def') diff --git a/gcc/params.def b/gcc/params.def index 7ac263cdc24..3ef5893fd42 100644 --- a/gcc/params.def +++ b/gcc/params.def @@ -408,6 +408,11 @@ DEFPARAM(PARAM_MAX_SCHED_REGION_INSNS, "The maximum number of insns in a region to be considered for interblock scheduling", 100, 0, 0) +DEFPARAM(PARAM_MAX_LAST_VALUE_RTL, + "max-last-value-rtl", + "The maximum number of RTL nodes that can be recorded as combiner's last value", + 10000, 0, 0) + /* INTEGER_CST nodes are shared for values [{-1,0} .. N) for {signed,unsigned} integral types. This determines N. Experimentation shows 256 to be a good value. */ -- cgit v1.2.1