[LLVMdev] llvmc searches PATH for llc

[Joel E. Denny]

Hi,

Is it intended that llvmc should search PATH for llc?  For example, this 
means that llvmc 2.7 can invoke llc 2.8:

  % echo $PATH
  /home/jdenny/installs/llvm/2.8/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
  % /home/jdenny/installs/llvm/2.7/bin/llvmc test.ll
  llc: Unknown command line argument '-f'.  Try: 'llc -help'
  % strace -f /home/jdenny/installs/llvm/2.7/bin/llvmc test.ll |& grep exec | grep llc
  [pid 15282] execve("/home/jdenny/installs/llvm/2.8/bin/llc", ["llc", "-f", "-O2", "test.ll", "-o", "/tmp/llvm_z9Haur/test.s"], [/* 41 vars */]) = 0
  % PATH=/home/jdenny/installs/llvm/2.7/bin:$PATH  
  % /home/jdenny/installs/llvm/2.7/bin/llvmc test.ll
  % echo $?
  0
  % strace -f /home/jdenny/installs/llvm/2.7/bin/llvmc test.ll |& grep exec | grep llc
  [pid 15309] execve("/home/jdenny/installs/llvm/2.7/bin/llc", ["llc", "-f", "-O2", "test.ll", "-o", "/tmp/llvm_b2iJJw/test.s"], [/* 41 vars */]) = 0

It seems that llvmc should instead invoke the llc from the same LLVM 
installation.