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| author | bstarynk <bstarynk@138bc75d-0d04-0410-961f-82ee72b054a4> | 2012-04-23 12:53:36 +0000 |
|---|---|---|
| committer | bstarynk <bstarynk@138bc75d-0d04-0410-961f-82ee72b054a4> | 2012-04-23 12:53:36 +0000 |
| commit | 65cbf05437b8a57ff08846beb19407c9e0dd2553 (patch) | |
| tree | 0b0bd391a56275bab5bf67e4094d9b7a24ade79c /gcc/tree-ssa-threadupdate.c | |
| parent | 381399a9fee786a047529a0f7de787de475ab97c (diff) | |
| download | gcc-65cbf05437b8a57ff08846beb19407c9e0dd2553.tar.gz | |
2012-04-23 Basile Starynkevitch <basile@starynkevitch.net>
MELT branch merged with trunk rev 186692 using svnmerge
[gcc/]
2012-04-23 Basile Starynkevitch <basile@starynkevitch.net>
{{improvements for merging with GCC 4.8 trunk svn rev 186692}}
* melt-run.proto.h (MELT_GCC_VERSION): Define, if unknown, in the
generated melt-run.h
* melt-runtime.c (melt_val2passflag): TODO_dump_func &
TODO_dump_cgraph don't exist in GCC 4.8.
* melt-build.tpl: Say flavor, not variant! Build first the
quicklybuilt application modules, to catch error in macro C
strings...
* melt-build.mk: Regenerate.
* melt/warmelt-base.melt (valdesc_strbuf): Check for MELT_GCC_VERSION also.
* melt/warmelt-genobj.melt (compilobj_nrep_citeration): Use
meltcit prefix in generated citerator names..
* melt/warmelt-outobj.melt (syntestgen_citerator): Use
meltcitstate prefix.
* melt/xtramelt-ana-base.melt (each_cgraph_fun_body)
(each_cgraph_fun_entryblock, each_cgraph_fun_call_flow_graph)
(each_bb_cfun, with_cfun_decl): Adapt to GCC 4.8, add
documentation.
(each_cgraph_decl): Only for GCC 4.6 & 4.7
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/melt-branch@186705 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/tree-ssa-threadupdate.c')
| -rw-r--r-- | gcc/tree-ssa-threadupdate.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/gcc/tree-ssa-threadupdate.c b/gcc/tree-ssa-threadupdate.c index 687eee0485a..018092a7a3a 100644 --- a/gcc/tree-ssa-threadupdate.c +++ b/gcc/tree-ssa-threadupdate.c @@ -661,6 +661,13 @@ thread_block (basic_block bb, bool noloop_only) /* We do not update dominance info. */ free_dominance_info (CDI_DOMINATORS); + /* We know we only thread through the loop header to loop exits. + Let the basic block duplication hook know we are not creating + a multiple entry loop. */ + if (noloop_only + && bb == bb->loop_father->header) + set_loop_copy (bb->loop_father, loop_outer (bb->loop_father)); + /* Now create duplicates of BB. Note that for a block with a high outgoing degree we can waste @@ -692,6 +699,10 @@ thread_block (basic_block bb, bool noloop_only) htab_delete (redirection_data); redirection_data = NULL; + if (noloop_only + && bb == bb->loop_father->header) + set_loop_copy (bb->loop_father, NULL); + /* Indicate to our caller whether or not any jumps were threaded. */ return local_info.jumps_threaded; } |