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| author | daney <daney@138bc75d-0d04-0410-961f-82ee72b054a4> | 2009-06-17 19:27:35 +0000 |
|---|---|---|
| committer | daney <daney@138bc75d-0d04-0410-961f-82ee72b054a4> | 2009-06-17 19:27:35 +0000 |
| commit | 326fb3fd5d032dbf896558a1718ca1a0f6a23523 (patch) | |
| tree | 0ee9c88e716310a821d02281dcf3c8aa315aa9b9 | |
| parent | 3461df79786575e42f992aac9c711c464b7ca1aa (diff) | |
| download | gcc-326fb3fd5d032dbf896558a1718ca1a0f6a23523.tar.gz | |
2009-06-17 David Daney <ddaney@caviumnetworks.com>
* jump.c (cleanup_barriers): Handle case of no insns before a
barrier.
2009-06-17 David Daney <ddaney@caviumnetworks.com>
* gcc.dg/builtin-unreachable-3.c: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@148624 138bc75d-0d04-0410-961f-82ee72b054a4
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/jump.c | 2 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/builtin-unreachable-3.c | 9 |
4 files changed, 20 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 1a5a9a637b6..9776a81048f 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2009-06-17 David Daney <ddaney@caviumnetworks.com> + + * jump.c (cleanup_barriers): Handle case of no insns before a + barrier. + 2009-06-17 David Edelsohn <edelsohn@gnu.org> * config/rs6000/dfp.md (nabsdd2_fpr): Correct mode. diff --git a/gcc/jump.c b/gcc/jump.c index 350de16f07c..7fe34f18661 100644 --- a/gcc/jump.c +++ b/gcc/jump.c @@ -113,6 +113,8 @@ cleanup_barriers (void) if (BARRIER_P (insn)) { prev = prev_nonnote_insn (insn); + if (!prev) + continue; if (BARRIER_P (prev)) delete_insn (insn); else if (prev != PREV_INSN (insn)) diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 873ec275d0e..5b7b369c907 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,5 +1,9 @@ 2009-06-17 David Daney <ddaney@caviumnetworks.com> + * gcc.dg/builtin-unreachable-3.c: New test. + +2009-06-17 David Daney <ddaney@caviumnetworks.com> + * gcc.target/i386/builtin-unreachable.c: New test. 2009-06-17 Ian Lance Taylor <iant@google.com> diff --git a/gcc/testsuite/gcc.dg/builtin-unreachable-3.c b/gcc/testsuite/gcc.dg/builtin-unreachable-3.c new file mode 100644 index 00000000000..6ad69261e1d --- /dev/null +++ b/gcc/testsuite/gcc.dg/builtin-unreachable-3.c @@ -0,0 +1,9 @@ +/* Check that a function containing only __builtin_unreachable() + doesn't ICE. */ +/* { dg-do compile } */ +/* { dg-options "-O2" } */ +const char * +f (void) +{ + __builtin_unreachable (); +} |