[LLVMdev] ARM issue: Trying to add an operand to a machine instr that is already done!
Karel Gardas
karel.gardas at centrum.cz
Mon Aug 29 14:33:16 PDT 2011
Hello,
I've compiled today's LLVM on ARM/Linux machine and attempted to use our
GHC/ARM port (which is using LLVM as a backend for generating machine
code) with it but I've failed in compiling GHC alone as LLVM fails on me
with following message:
llc:
/export/home/karel/vcs/llvm-ghc-arm/lib/CodeGen/MachineInstr.cpp:612:
void llvm::MachineInstr::addOperand(const llvm::MachineOperand&):
Assertion `(isImpReg || !OperandsComplete()) && "Trying to add an
operand to a machine instr that is already done!"' failed.
Stack dump:
0. Program arguments: llc -O3 -relocation-model=static
/tmp/ghc12607_0/ghc12607_0.bc -o /tmp/ghc12607_0/ghc12607_0.lm_s
-mattr=+v7,+vfp3
1. Running pass 'Function Pass Manager' on module
'/tmp/ghc12607_0/ghc12607_0.bc'.
2. Running pass 'ARM load / store optimization pass' on function
'@s51E_info'
Aborted
FYI: Stephen Blackheath enhanced LLVM to support custom GHC calling
convention on ARM and I've added support for floating point regs to his
patch. Current version is attached for your reference. I'm writing this
since GHC/ARM is working well with LLVM from 2011-07-12 with this patch
applied but it's not working with today's LLVM. I'm curious if this
failure is caused by our patch (or some omission in it) or if this is
issue in LLVM itself.
Thanks for any idea where to start looking to fix that!
Karel
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