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| author | David Daney <ddaney@caviumnetworks.com> | 2009-09-03 05:01:40 +0000 |
|---|---|---|
| committer | David Daney <daney@gcc.gnu.org> | 2009-09-03 05:01:40 +0000 |
| commit | 896aa4eae3cd9f463597e8717ac8722ff7050965 (patch) | |
| tree | bcd50e973902119516f03bdc0a265a1b5dc16135 /gcc/emit-rtl.c | |
| parent | 4537ec0c8652889bc6decbcf5647f889d2a14733 (diff) | |
| download | gcc-896aa4eae3cd9f463597e8717ac8722ff7050965.zip gcc-896aa4eae3cd9f463597e8717ac8722ff7050965.tar.gz gcc-896aa4eae3cd9f463597e8717ac8722ff7050965.tar.bz2 | |
cfgbuild.c (find_bb_boundaries): Split blocks containing a barrier.
2009-09-02 David Daney <ddaney@caviumnetworks.com>
* cfgbuild.c (find_bb_boundaries): Split blocks containing a
barrier.
* emit-rtl.c (prev_nonnote_insn_bb): New function.
* rtl.h (prev_nonnote_insn_bb): Declare it.
2009-09-02 David Daney <ddaney@caviumnetworks.com>
* gcc.c-torture/compile/builtin_unreachable-1.c: New testcase.
From-SVN: r151361
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 9096a62..65022fc 100644 --- a/gcc/emit-rtl.c +++ b/gcc/emit-rtl.c @@ -3082,6 +3082,25 @@ prev_nonnote_insn (rtx insn) return insn; } +/* Return the previous insn before INSN that is not a NOTE, but stop + the search before we enter another basic block. This routine does + not look inside SEQUENCEs. */ + +rtx +prev_nonnote_insn_bb (rtx insn) +{ + while (insn) + { + insn = PREV_INSN (insn); + if (insn == 0 || !NOTE_P (insn)) + break; + if (NOTE_INSN_BASIC_BLOCK_P (insn)) + return NULL_RTX; + } + + return insn; +} + /* Return the next insn after INSN that is not a DEBUG_INSN. This routine does not look inside SEQUENCEs. */ |