[LLVMdev] Re: Problems Cross Compiling for x86 and ia64

[Michael McCracken]

OK, I noticed a few problems with my previous email, so I will boil
the question down:

What I want to do is compile for x86 and ia64 from darwin.
I also want to load my own passes into opt and llc.

Should I be using llvmc at all here, or should I be doing something
like llvmgcc -> gccas -> opt -> llc ?

I've given up on the filetype=obj argument, so now the problem is that
llc is crashing when I use -march=ia64. I'd appreciate help tracking
this down. I've included the backtrace here.

Thanks,
-mike

(gdb) run -march=ia64 loopUnroll.bc -f
Starting program:
/Users/mike/Documents/hpcl/LLVM/obj-llvm-darcslocal/Debug/bin/llc
-march=ia64 loopUnroll.bc -f
Reading symbols for shared libraries . done

Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_PROTECTION_FAILURE at address: 0x00000018
0x00513d50 in llvm::MachineInstr::getParent (this=0x0) at
/Users/mike/Documents/hpcl/LLVM/obj-llvm-darcslocal/../llvm-darcslocal/llvm/include/llvm/Analysis/LoopInfo.h:433
Line number 433 out of range;
/Users/mike/Documents/hpcl/LLVM/obj-llvm-darcslocal/../llvm-darcslocal/llvm/include/llvm/Analysis/LoopInfo.h
has 336 lines.
(gdb) bt
#0  0x00513d50 in llvm::MachineInstr::getParent (this=0x0) at
/Users/mike/Documents/hpcl/LLVM/obj-llvm-darcslocal/../llvm-darcslocal/llvm/include/llvm/Analysis/LoopInfo.h:433
#1  0x001ca99c in (anonymous
namespace)::RA::assignRegOrStackSlotAtInterval (this=0x8b010f0,
cur=0x8b34114) at
/Users/mike/Documents/hpcl/LLVM/obj-llvm-darcslocal/../llvm-darcslocal/llvm/lib/CodeGen/RegAllocLinearScan.cpp:567
#2  0x001cca64 in (anonymous namespace)::RA::linearScan
(this=0x8b010f0) at
/Users/mike/Documents/hpcl/LLVM/obj-llvm-darcslocal/../llvm-darcslocal/llvm/lib/CodeGen/RegAllocLinearScan.cpp:276
#3  0x001cd328 in (anonymous namespace)::RA::runOnMachineFunction
(this=0x8b010f0, fn=@0x8b122c0) at
/Users/mike/Documents/hpcl/LLVM/obj-llvm-darcslocal/../llvm-darcslocal/llvm/lib/CodeGen/RegAllocLinearScan.cpp:214
#4  0x005632e0 in llvm::MachineFunctionPass::runOnFunction
(this=0x8b010f0, F=@0x8b05010) at
/Users/mike/Documents/hpcl/LLVM/obj-llvm-darcslocal/../llvm-darcslocal/llvm/include/llvm/CodeGen/MachineFunctionPass.h:38
#5  0x007c3390 in llvm::PassManagerTraits<llvm::Function>::runPass
(P=0x8b010f0, F=0x8b05010) at
/Users/mike/Documents/hpcl/LLVM/obj-llvm-darcslocal/../llvm-darcslocal/llvm/lib/VMCore/PassManagerT.h:706
#6  0x007e1fb0 in llvm::PassManagerT<llvm::Function>::runOnUnit
(this=0x8b12cb0, M=0x8b05010) at
/Users/mike/Documents/hpcl/LLVM/obj-llvm-darcslocal/../llvm-darcslocal/llvm/lib/VMCore/PassManagerT.h:256
#7  0x007c3624 in
llvm::PassManagerTraits<llvm::Function>::runOnFunction
(this=0x8b12cb0, F=@0x8b05010) at
/Users/mike/Documents/hpcl/LLVM/obj-llvm-darcslocal/../llvm-darcslocal/llvm/lib/VMCore/PassManagerT.h:810
#8  0x00283384 in llvm::FunctionPass::runOnModule (this=0x8b12cb0,
M=@0x8b02580) at
/Users/mike/Documents/hpcl/LLVM/obj-llvm-darcslocal/../llvm-darcslocal/llvm/lib/VMCore/Pass.cpp:252
#9  0x007c3494 in llvm::PassManagerTraits<llvm::Module>::runPass
(P=0x8b12cb0, M=0x8b02580) at
/Users/mike/Documents/hpcl/LLVM/obj-llvm-darcslocal/../llvm-darcslocal/llvm/lib/VMCore/PassManagerT.h:746
#10 0x007df4dc in llvm::PassManagerT<llvm::Module>::runOnUnit
(this=0x8b0d770, M=0x8b02580) at
/Users/mike/Documents/hpcl/LLVM/obj-llvm-darcslocal/../llvm-darcslocal/llvm/lib/VMCore/PassManagerT.h:256
#11 0x007c3564 in llvm::PassManagerTraits<llvm::Module>::runOnModule
(this=0x8b0d770, M=@0x8b02580) at
/Users/mike/Documents/hpcl/LLVM/obj-llvm-darcslocal/../llvm-darcslocal/llvm/lib/VMCore/PassManagerT.h:755
#12 0x00282128 in llvm::PassManager::run (this=0xbfffee94,
M=@0x8b02580) at
/Users/mike/Documents/hpcl/LLVM/obj-llvm-darcslocal/../llvm-darcslocal/llvm/lib/VMCore/Pass.cpp:88
#13 0x00003dc8 in main (argc=4, argv=0xbfffefc8) at
/Users/mike/Documents/hpcl/LLVM/obj-llvm-darcslocal/../llvm-darcslocal/llvm/tools/llc/llc.cpp:221
(gdb) 

On 9/15/05, Michael McCracken <michael.mccracken at gmail.com> wrote:
> Hi, I'm having some problems cross-compiling from ppc (OS X) to x86
> object files and to ia64, at all. I'd appreciate some advice as to
> whether or not I'm actually supposed to be able to do this, and what's
> wrong if so.
> 
> Here's how I configured it:
> 
> ../llvm-darcslocal/llvm/configure --with-llvmgccdir=$LLVMGCCDIR
> --prefix=$HOME/Documents/hpcl/LLVM/install
> 
> The results work fine when building for ppc.
> 
> Here's what I tried:
> 
> LLVM/cfe-src/install/bin/gcc -o loopUnroll loopUnroll.c
> LLVM/obj-llvm-darcslocal/Debug/bin/llvmc -O3 -o loopUnroll-llvm loopUnroll.bc
> llvm-ld: warning: Cannot find library 'c'
> 
> LLVM/obj-llvm-darcslocal/Debug/bin/llc -march=x86 -f -filetype=obj -o
> loopUnroll-x86 loopUnroll.bc
> LLVM/obj-llvm-darcslocal/../llvm-darcslocal/llvm/lib/CodeGen/ELFWriter.cpp:63:
> failed assertion `0 && "unimp"'
> ^Cmake: *** [llvm-x86] Abort trap (core dumped)
> 
> -- note that without -filetype=obj I get no problems and an apparently
> fine x86 asm file.
> 
> LLVM/obj-llvm-darcslocal/Debug/bin//llc -march=ia64 -stats -f -o
> loopUnroll-ia64 loopUnroll.bc
> make: *** [llvm-ia64] Bus error (core dumped)
> 
> -- note that this has no -filetype option at all.
> 
> Any hints?
> 
> Thanks,
> -mike
> 
> --
> Michael McCracken
> UCSD CSE PhD Candidate
> research: http://www.cse.ucsd.edu/~mmccrack/
> misc: http://michael-mccracken.net/blog/
> 


-- 
Michael McCracken
UCSD CSE PhD Candidate
research: http://www.cse.ucsd.edu/~mmccrack/
misc: http://michael-mccracken.net/blog/