[LLVMbugs] [Bug 15289] New: -O3 -ffast-math -fplugin-arg-dragonegg-llvm-option=-vectorize -fplugin-arg-dragonegg-enable-gcc-optzns ICEs

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=15289

            Bug ID: 15289
           Summary: -O3 -ffast-math
                    -fplugin-arg-dragonegg-llvm-option=-vectorize
                    -fplugin-arg-dragonegg-enable-gcc-optzns ICEs
           Product: new-bugs
           Version: trunk
          Hardware: Macintosh
                OS: MacOS X
            Status: NEW
          Severity: normal
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: howarth at nitro.med.uc.edu
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

When compiling the tenso.f from xplor-nih with -O3 -ffast-math
-fplugin-arg-dragonegg-llvm-option=-vectorize
-fplugin-arg-dragonegg-enable-gcc-optzns the follows compiler ICE occurs...

% de-gfortran47 -c tenso.f -O3 -ffast-math
-fplugin-arg-dragonegg-llvm-option=-vectorize
-fplugin-arg-dragonegg-enable-gcc-optzns -fdefault-integer-8
-ffixed-line-length-120 -fno-second-underscore
Stack dump:
0.    Running pass 'CallGraph Pass Manager' on module 'tenso.f'.
1.    Running pass 'BasicBlock Pass Manager' on function '@cart_to_dc2y_'
2.    Running pass 'Basic-Block Vectorization' on basic block '%entry'
*** 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
PLUGIN_ALL_IPA_PASSES_END        | dragonegg
tenso.f:811:0: internal compiler error: Segmentation fault: 11
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

This ICE is not triggered at -O2 or with any of the flags enabled by -O3 added
to -O2. It requires -O3 explicitly. The attached de_vectorize_bug.tar.bz2
archive contains the files required to reproduce this failure.

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