[Llvm-bgq-discuss] fatal error: error in backend: Cannot select: 0x10040606cd0: f64 = extract_vector_elt 0x10040604570, 0x100402cc320 [ORD=1322] [ID=22]

[Hal Finkel]

Erik,

I've fixed this in my local repository; so this will be fixed in the next patchset release.

The cause of this error was that I did not understand that the 'index' argument of LLVM's extract-vector-element operation could be non-constant. I've added an implementation for this 'general' case as sldi (left shift by 5) -> qvlpclsx
 -> qvfperm. The constant index case is still handled by qvesplati as it was before.

Thanks again,
Hal

----- Original Message -----
> Erik,
> 
> Thanks! I'll get this (and your previous bug) fixed soon.
> 
>  -Hal
> 
> ----- Original Message -----
> > I received the following error message from clang on Vesta that I
> > am
> > reporting here instead of on bugs.llvm.org:
> > 
> > Clang invocation:
> > 
> > /home/projects/llvm/bin/bgclang++11    -O0
> > -I/soft/compilers/ibmcmp-feb2013/xlmass/bg/7.3/include   -o
> > CMakeFiles/bench.dir/bench.cc.o -c
> > /home/eschnett/src/vecmathlib-qpx/bench.cc
> > 
> > Error message:
> > 
> > In file included from /home/eschnett/src/vecmathlib-qpx/bench.cc:5:
> > In file included from
> > /home/eschnett/src/vecmathlib-qpx/vecmathlib.h:76:
> > /home/eschnett/src/vecmathlib-qpx/vec_double_qpx.h:11:2: warning:
> > "TODO"
> >       [-W#warnings]
> > #warning "TODO"
> >  ^
> > /home/eschnett/src/vecmathlib-qpx/vec_double_qpx.h:441:2: warning:
> > "TODO"
> >       [-W#warnings]
> > #warning "TODO"
> >  ^
> > fatal error: error in backend: Cannot select: 0x100103bdc20: f64 =
> >       extract_vector_elt 0x10010719670, 0x10010734610 [ORD=1322]
> >       [ID=22]
> >   0x10010719670: v4f64,ch = load 0x10010734810, 0x10010353f60,
> > 0x10010749c00<LD32[%v]> [ORD=1320] [ID=21]
> >     0x10010353f60: i64,ch = load 0x10010734810, 0x100103be020,
> > 0x10010749c00<LD8[%this.addr]> [ORD=1318] [ID=19]
> >       0x100103be020: i64 = FrameIndex<0> [ORD=1316] [ID=6]
> >       0x10010749c00: i64 = undef [ORD=1316] [ID=7]
> >     0x10010749c00: i64 = undef [ORD=1316] [ID=7]
> >   0x10010734610: i64,ch = load 0x10010734810, 0x100107383f0,
> > 0x10010749c00<LD4[%n.addr], zext from i32> [ID=18]
> >     0x100107383f0: i64 = FrameIndex<1> [ORD=1317] [ID=8]
> >     0x10010749c00: i64 = undef [ORD=1316] [ID=7]
> > In function: _ZNK10vecmathlib7realvecIdLi4EEixEi
> > clang: error: clang frontend command failed with exit code 70 (use
> > -v
> > to
> > see invocation)
> > clang version 3.4 (login1.mcs.anl.gov:src/llvm-trunk/tools/clang
> > a56f5370124826a853d38050afa60fe85096870b)
> > (login1.mcs.anl.gov:src/llvm-trunk
> > 66fd9b1b79e04004afe6eca8a438d6430341aa00)
> > Target: powerpc64-bgq-linux
> > Thread model: posix
> > clang: note: diagnostic msg: PLEASE submit a bug report to
> > http://llvm.org/bugs/ and include the crash backtrace, preprocessed
> > source,
> > and associated run script.
> > clang: note: diagnostic msg:
> > ********************
> > 
> > PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
> > Preprocessed source(s) and associated run script(s) are located at:
> > clang: note: diagnostic msg: /tmp/bench-PYtUac.cpp
> > clang: note: diagnostic msg: /tmp/bench-PYtUac.sh
> > clang: note: diagnostic msg:
> > 
> > 
> > -erik
> > 
> > --
> > Erik Schnetter <schnetter at cct.lsu.edu>
> > http://www.perimeterinstitute.ca/personal/eschnetter/
> > 
> > _______________________________________________
> > llvm-bgq-discuss mailing list
> > llvm-bgq-discuss at lists.alcf.anl.gov
> > https://lists.alcf.anl.gov/mailman/listinfo/llvm-bgq-discuss
> > 
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