From 36958752554e6522753ccbebd80e12c0bb03d08d Mon Sep 17 00:00:00 2001 From: law Date: Wed, 24 Oct 2001 18:58:15 +0000 Subject: * ssa-ccp.c (ssa_ccp_substitute_constants): Don't do anything if the node was already a set to a constant. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@46468 138bc75d-0d04-0410-961f-82ee72b054a4 --- gcc/ssa-ccp.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'gcc/ssa-ccp.c') diff --git a/gcc/ssa-ccp.c b/gcc/ssa-ccp.c index 047b29d82b2..c2f1b78cae1 100644 --- a/gcc/ssa-ccp.c +++ b/gcc/ssa-ccp.c @@ -866,8 +866,13 @@ ssa_ccp_substitute_constants () /* Do not try to simplify PHI nodes down to a constant load. That will be done later as we translate out of SSA. Also, doing that here could violate the rule that all PHI nodes - are consecutive at the start of the basic block. */ - if (! PHI_NODE_P (def)) + are consecutive at the start of the basic block. + + Don't do anything to nodes that were already sets to + constants. */ + if (! PHI_NODE_P (def) + && ! ((GET_CODE (def) == INSN + && GET_CODE (SET_SRC (set)) == CONST_INT))) { if (rtl_dump_file) fprintf (rtl_dump_file, -- cgit v1.2.1