[LLVMdev] How to prevent optimizations and preserve program variables during link?

[lucefe]

Hi,

I am using klee-gcc to compile 'findutils', but I don't know why the
variables are all replaced with temp variables(such as %10) and
instructions are reordered for optimizations, how can I generate the
bytecode and reserve the program variables. I used the next commands
without any optimization options:


   1.

   $ ../configure --disable-nls CFLAGS="-g"
   2.

   $ make CC=/home/guest/installed/klee/scripts/klee-gcc

*Moreover, I found the bytecode before linking had program variables, but
the generated target object had non. why?*
**
*For during the 'make' step, I encountered an error:
*
/home/guest/installed/klee/scripts/klee-gcc -Wdeclaration-after-statement
-Wall -g   -o find ftsfind.o ./libfindtools.a ../lib/libfind.a
../gnulib/lib/libgnulib.a  -lrt     -lm -lm
/usr/bin/ld.bfd.real: cannot find crt1.o: No such file or directory
/usr/bin/ld.bfd.real: cannot find crti.o: No such file or directory
ftsfind.o: file not recognized: File format not recognized
collect2: ld returned 1 exit status

*so I use the next command by hand instead:*
llvm-ld -o find ftsfind.o ./libfindtools.a ../lib/libfind.a
../gnulib/lib/libgnulib.a  -L /usr/lib32/ -lrt -lm -lm

*when '-disable-opt' was added, the same output was generated. *

llvm-ld -disable-opt -o find ftsfind.o ./libfindtools.a ../lib/libfind.a
../gnulib/lib/libgnulib.a  -L /usr/lib32/ -lrt -lm -lm

*Does some error in my llvm-ld command? And how can I prevent optimizations
and preserve program variables.
*
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