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| author | bstarynk <bstarynk@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-05-20 08:22:38 +0000 |
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| committer | bstarynk <bstarynk@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-05-20 08:22:38 +0000 |
| commit | ccf4f3ae98386198926269817844b5bb67d3ebe4 (patch) | |
| tree | 15db9a73406c618d2f18f1e9696a3f9549e5ace6 /gcc/ddg.c | |
| parent | 79fb55a1f085a3c03a9168b97773ddd9a4ad054a (diff) | |
| download | gcc-ccf4f3ae98386198926269817844b5bb67d3ebe4.tar.gz | |
2011-05-20 Basile Starynkevitch <basile@starynkevitch.net>
MELT branch merged with trunk rev 173935 using svnmerge
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/melt-branch@173937 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/ddg.c')
| -rw-r--r-- | gcc/ddg.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/gcc/ddg.c b/gcc/ddg.c index 4543ba7d170..b8ae375f153 100644 --- a/gcc/ddg.c +++ b/gcc/ddg.c @@ -197,6 +197,11 @@ create_ddg_dep_from_intra_loop_link (ddg_ptr g, ddg_node_ptr src_node, } } + /* If a true dep edge enters the branch create an anti edge in the + opposite direction to prevent the creation of reg-moves. */ + if ((DEP_TYPE (link) == REG_DEP_TRUE) && JUMP_P (dest_node->insn)) + create_ddg_dep_no_link (g, dest_node, src_node, ANTI_DEP, REG_DEP, 1); + latency = dep_cost (link); e = create_ddg_edge (src_node, dest_node, t, dt, latency, distance); add_edge_to_ddg (g, e); |