[LLVMbugs] [Bug 9727] New: -O2 -ftree-vectorize -fplugin-arg-dragonegg-enable-gcc-optzns fails to compile utils.c

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Thu Apr 14 17:07:46 PDT 2011


           Summary: -O2 -ftree-vectorize
                    -fplugin-arg-dragonegg-enable-gcc-optzns fails to
                    compile utils.c
           Product: dragonegg
           Version: trunk
          Platform: Macintosh
        OS/Version: MacOS X
            Status: NEW
          Severity: normal
          Priority: P
         Component: New Bugs
        AssignedTo: baldrick at free.fr
        ReportedBy: howarth at nitro.med.uc.edu
                CC: llvmbugs at cs.uiuc.edu

Created an attachment (id=6475)
 --> (http://llvm.org/bugs/attachment.cgi?id=6475)
preprocessed source file for src/utils.c

The src/utils.c source file from Athena 4.0 fails to compile with -O2
-ftree-vectorize -fplugin-arg-dragonegg-enable-gcc-optzns under dragonegg trunk
svn at r129512 under x86_64-apple-darwin10. The failure appears as...

[MacPro:~/Downloads/athena4.0/src] howarth% de-gcc45 -O2 -ftree-vectorize
-fplugin-arg-dragonegg-enable-gcc-optzns --save-temps -c utils.c
vect_perm_even.146_131 = VEC_EXTRACTEVEN_EXPR <vect_var_.144_128,

Unhandled GIMPLE assignment!
UNREACHABLE executed at
*** WARNING *** there are active plugins, do not report this as a bug unless
you can reproduce it without enabling any plugins.
Event                            | Plugins
PLUGIN_FINISH_UNIT               | dragonegg
PLUGIN_FINISH                    | dragonegg
PLUGIN_START_UNIT                | dragonegg
utils.c: In function ‘ath_bswap’:
utils.c:72:6: internal compiler error: Illegal instruction
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

and is eliminated without -ftree-vectorize.

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