-ffast-math -O3 -fplugin-arg-dragonegg-enable-gcc-optzns ICEs on channel.f90

[llvmbot]

Bugzilla Link	10017
Resolution	DUPLICATE
Resolved on	Sep 07, 2011 02:05
Version	trunk
OS	MacOS X
Reporter	LLVM Bugzilla Contributor

Extended Description

The channel.f90 Polyhedron 2005 benchmark ICEs the FSF gcc 4.5.3 compiler with the dragon egg svn r132085 plugin with -ffast-math -O3 -fplugin-arg-dragonegg-enable-gcc-optzns...

[MacPro:pb05/lin/source] howarth% gdb /sw/lib/gcc4.5/libexec/gcc/x86_64-apple-darwin11.0.0/4.5.3/f951
...
(gdb) r channel.f90 -fPIC -quiet -dumpbase channel.f90 -mmacosx-version-min=10.7.0 -msse3 -mtune=generic -auxbase channel -O3 -version -fplugin=/sw/lib/gcc4.5/lib/dragonegg.so -ffast-math -fplugin-arg-dragonegg-enable-gcc-optzns -fintrinsic-modules-path /sw/lib/gcc4.5/lib/gcc/x86_64-apple-darwin11.0.0/4.5.3/finclude -o /var/folders/0k/n67sywk41kz5jjys5nv6mnpg++++fp/T//cccrvy4i.s
Starting program: /sw/lib/gcc4.5/libexec/gcc/x86_64-apple-darwin11.0.0/4.5.3/f951 channel.f90 -fPIC -quiet -dumpbase channel.f90 -mmacosx-version-min=10.7.0 -msse3 -mtune=generic -auxbase channel -O3 -version -fplugin=/sw/lib/gcc4.5/lib/dragonegg.so -ffast-math -fplugin-arg-dragonegg-enable-gcc-optzns -fintrinsic-modules-path /sw/lib/gcc4.5/lib/gcc/x86_64-apple-darwin11.0.0/4.5.3/finclude -o /var/folders/0k/n67sywk41kz5jjys5nv6mnpg++++fp/T//cccrvy4i.s
...

Versions of loaded plugins:
dragonegg: exported

Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_INVALID_ADDRESS at address: 0x0000000000000028
0x000000014297fa6e in llvm::DAGTypeLegalizer::ScalarizeVectorResult ()
(gdb) bt
#​0 0x000000014297fa6e in llvm::DAGTypeLegalizer::ScalarizeVectorResult ()
#​1 0x0000000142973c3f in llvm::DAGTypeLegalizer::run ()
#​2 0x00000001429780b2 in llvm::SelectionDAG::LegalizeTypes ()
#​3 0x0000000142a08744 in llvm::SelectionDAGISel::CodeGenAndEmitDAG ()
#​4 0x0000000142a08540 in llvm::SelectionDAGISel::SelectAllBasicBlocks ()
#​5 0x0000000142a07147 in llvm::SelectionDAGISel::runOnMachineFunction ()
#​6 0x0000000142abaf1e in llvm::MachineFunctionPass::runOnFunction ()
#​7 0x0000000142e07ed1 in llvm::FPPassManager::runOnFunction ()
#​8 0x0000000142e0785b in llvm::FunctionPassManagerImpl::run ()
#​9 0x0000000142e07715 in llvm::FunctionPassManager::run ()
#​10 0x0000000142804ccc in llvm_finish_unit ()
#​11 0x000000010056672d in invoke_plugin_callbacks (event=<value temporarily unavailable, due to optimizations>, gcc_data=0x0) at ../../gcc-4.5.3/gcc/plugin.c:510
#​12 0x0000000100612301 in toplev_main (argc=20, argv=0x7fff5fbfee60) at ../../gcc-4.5.3/gcc/toplev.c:1146
#​13 0x0000000100001594 in start ()
(gdb)

[llvmbot]

This is on x86_64 darwin at both -m32 and -m64 and appears on the command line as...

[MacPro:pb05/lin/source] howarth% de-gfortran45 -msse3 -ffast-math -O3 -fplugin-arg-dragonegg-enable-gcc-optzns channel.f90 -o channel
Stack dump:
0. Running pass 'X86 DAG->DAG Instruction Selection' on function '@list_'
*** 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
channel.f90:283:0: 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.

[llvmbot]

*** This bug has been marked as a duplicate of bug #2686 ***

[llvmbot]

At r139168 with the vector_select code present in llvm svn, the compilation failure for the channel.f90 test case is now converted to the failure...

[MacPro:pb05/lin/source] howarth% /sw/lib/gcc4.5/bin/gfortran -fplugin=/sw/lib/gcc4.5/lib/dragonegg.so -msse3 -ffast-math -O3 -fplugin-arg-dragonegg-enable-gcc-optzns channel.f90 -o channel
LLVM ERROR: Do not know how to scalarize the result of this operator!

[llvmbot]

mentioned in issue #2686