On 9/29/07, Peng Yu <pengyu.ut@xxxxxxxxx> wrote: > Are there any compiler options which generate more > information and help me to read the assembly code and compare it with > the source code? You can request dumps of the intermediate forms and transformations done during compilation. See -fdump-rtl-xxx and -fdump-tree-xxx in the GCC manual. To get an annotated assembly output with source code try the following flags: $ gcc -Wa,-ahlsdn -gstabs file.c