diff options
| author | daney <daney@138bc75d-0d04-0410-961f-82ee72b054a4> | 2009-07-25 20:25:18 +0000 |
|---|---|---|
| committer | daney <daney@138bc75d-0d04-0410-961f-82ee72b054a4> | 2009-07-25 20:25:18 +0000 |
| commit | c4d13c5c0535f2eba2ab5b5dee94666ff6dc7e60 (patch) | |
| tree | 697b3a3928c509ec1d15830956e5fd590de886f9 /gcc/emit-rtl.c | |
| parent | 616b875f3e877e13c8ed17204b2c208bd6769e31 (diff) | |
| download | gcc-c4d13c5c0535f2eba2ab5b5dee94666ff6dc7e60.tar.gz | |
2009-07-25 David Daney <ddaney@caviumnetworks.com>
PR rtl-optimization/40445
* emit-rtl.c (next_nonnote_insn_bb): New function.
* rtl.h (next_nonnote_insn_bb): Declare new function.
* cfgcleanup.c (try_optimize_cfg): Don't remove an empty block
with no successors that is the successor of the ENTRY_BLOCK.
Continue from the top after removing an empty fallthrough block.
* cfgrtl.c (get_last_bb_insn): Call next_nonnote_insn_bb instead
of next_nonnote_insn.
2009-07-25 David Daney <ddaney@caviumnetworks.com>
PR rtl-optimization/40445
* g++.dg/other/builtin-unreachable-1.C: New testcase.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@150090 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/emit-rtl.c')
| -rw-r--r-- | gcc/emit-rtl.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/gcc/emit-rtl.c b/gcc/emit-rtl.c index 5b42f4a8778..21d8434d457 100644 --- a/gcc/emit-rtl.c +++ b/gcc/emit-rtl.c @@ -2998,6 +2998,25 @@ next_nonnote_insn (rtx insn) return insn; } +/* Return the next insn after INSN that is not a NOTE, but stop the + search before we enter another basic block. This routine does not + look inside SEQUENCEs. */ + +rtx +next_nonnote_insn_bb (rtx insn) +{ + while (insn) + { + insn = NEXT_INSN (insn); + if (insn == 0 || !NOTE_P (insn)) + break; + if (NOTE_INSN_BASIC_BLOCK_P (insn)) + return NULL_RTX; + } + + return insn; +} + /* Return the previous insn before INSN that is not a NOTE. This routine does not look inside SEQUENCEs. */ |