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| author | Bernd Schmidt <bernd.schmidt@analog.com> | 2006-09-15 12:35:43 +0000 |
|---|---|---|
| committer | Bernd Schmidt <bernds@gcc.gnu.org> | 2006-09-15 12:35:43 +0000 |
| commit | 11b904a1fc450d9d4d9c77441aa25d0fb8a5e51b (patch) | |
| tree | d8379f7b3521123e3720bfa6fc21522b1fbdfddd /gcc/cfgrtl.c | |
| parent | 61066abfcd5ee6e7bd580d27bde1be11992cf6f8 (diff) | |
| download | gcc-11b904a1fc450d9d4d9c77441aa25d0fb8a5e51b.zip gcc-11b904a1fc450d9d4d9c77441aa25d0fb8a5e51b.tar.gz gcc-11b904a1fc450d9d4d9c77441aa25d0fb8a5e51b.tar.bz2 | |
cfgrtl.c (emit_insn_at_entry): New function.
* cfgrtl.c (emit_insn_at_entry): New function.
* rtl.h (emit_insn_at_entry): Declare it.
* integrate.c (emit_initial_value_sets): Use it.
From-SVN: r116968
Diffstat (limited to 'gcc/cfgrtl.c')
| -rw-r--r-- | gcc/cfgrtl.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/gcc/cfgrtl.c b/gcc/cfgrtl.c index b07bb94..df281cb 100644 --- a/gcc/cfgrtl.c +++ b/gcc/cfgrtl.c @@ -453,6 +453,20 @@ entry_of_function (void) BB_HEAD (ENTRY_BLOCK_PTR->next_bb) : get_insns ()); } +/* Emit INSN at the entry point of the function, ensuring that it is only + executed once per function. */ +void +emit_insn_at_entry (rtx insn) +{ + edge_iterator ei = ei_start (ENTRY_BLOCK_PTR->succs); + edge e = ei_safe_edge (ei); + if (!(e->flags & EDGE_FALLTHRU)) + abort (); + + insert_insn_on_edge (insn, e); + commit_edge_insertions (); +} + /* Update insns block within BB. */ void |