On Wed, Nov 20, 2013 at 12:59 PM, Steven Bosscher <stevenb....@gmail.com> wrote:
> Hello,
>
> With the attached patch, dead jump tables are deleted if a
> CLEANUP_EXPENSIVE is performed in cfglayout mode. This helps remove
> labels and merge basic blocks, and brings the CFG out of cfglayout
> mode more cleanly. It also fixes bugs in LABEL_NUSES updating, which
> was broken for cfglayout, and which was done in the wrong place for
> IRA.
>
> Bootstrapped&tested on powerpc64-unknown-linux-gnu. The patch needs
> patching for the EXIT_BLOCK_PTR/ENTRY_BLOCK_PTR changes but what's
> attached is what I tested. If the patch is OK, I'll make the necessary
> changes and re-test before committing.
>
> OK for trunk?
It breaks bootstrap on x86 with java enabled:
/export/gnu/import/git/gcc-test-intel64/src-trunk/libjava/classpath/gnu/xml/aelfred2/XmlParser.java:
In class 'gnu.xml.aelfred2.XmlParser':
/export/gnu/import/git/gcc-test-intel64/src-trunk/libjava/classpath/gnu/xml/aelfred2/XmlParser.java:
In method 'gnu.xml.aelfred2.XmlParser.parseXMLDecl(boolean)':
In file included from
/export/gnu/import/git/gcc-test-intel64/src-trunk/libjava/classpath/gnu/xml/aelfred2/XmlParser.java:5804:0,
from
/export/gnu/import/git/gcc-test-intel64/src-trunk/libjava/classpath/gnu/xml/aelfred2/SAXDriver.java:1509,
from
/export/gnu/import/git/gcc-test-intel64/src-trunk/libjava/classpath/gnu/xml/aelfred2/XmlParser.java:5793,
from
/export/gnu/import/git/gcc-test-intel64/src-trunk/libjava/classpath/gnu/xml/aelfred2/SAXDriver.java:1605,
from
/export/gnu/import/git/gcc-test-intel64/src-trunk/libjava/classpath/gnu/xml/aelfred2/XmlParser.java:5813,
from <built-in>:14:
/export/gnu/import/git/gcc-test-intel64/src-trunk/libjava/classpath/gnu/xml/aelfred2/XmlParser.java:844:0:
internal compiler error: in remove_insn, at emit-rtl.c:3981
return encodingName;
^
0x66b1f3 remove_insn(rtx_def*)
../../src-trunk/gcc/emit-rtl.c:3981
0x5cf31b delete_insn(rtx_def*)
../../src-trunk/gcc/cfgrtl.c:170
0xd5d7ae delete_dead_jump_tables_between
../../src-trunk/gcc/cfgcleanup.c:2971
0xd60511 delete_dead_jumptables()
../../src-trunk/gcc/cfgcleanup.c:2997
0xd617a2 cleanup_cfg(int)
../../src-trunk/gcc/cfgcleanup.c:3084
0xdbd15a rest_of_handle_if_conversion
../../src-trunk/gcc/ifcvt.c:4482
0xdbd15a execute
../../src-trunk/gcc/ifcvt.c:4516
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
make[8]: *** [gnu-xml-aelfred2.lo] Error 1
--
H.J.
