From 83c66c1e7a8cb96d3d429fceb49b1025295b5667 Mon Sep 17 00:00:00 2001 From: Dan Nicolaescu Date: Wed, 24 Oct 2001 18:58:15 +0000 Subject: [PATCH] ssa-ccp.c (ssa_ccp_substitute_constants): Don't do anything if the node was already a set to a constant. * ssa-ccp.c (ssa_ccp_substitute_constants): Don't do anything if the node was already a set to a constant. From-SVN: r46468 --- gcc/ChangeLog | 5 +++++ gcc/ssa-ccp.c | 9 +++++++-- 2 files changed, 12 insertions(+), 2 deletions(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index f595b36349e..69d605d3323 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2001-10-24 Dan Nicolaescu + + * ssa-ccp.c (ssa_ccp_substitute_constants): Don't do anything if + the node was already a set to a constant. + Wed Oct 24 12:41:19 2001 Richard Kenner * emit-rtl.c (set_mem_attributes): Fix typo in last change. 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, -- 2.30.2