"kernel coder" <[EMAIL PROTECTED]> writes: > Thanks for your explaination.I just figured out the > problem.actually a pattern named "bgtu" was generated by gcc and in > my backend ,i defined all branch patterns except bgtu.So when gcc > tried to match "bgtu" pattern ,it could not find it and generated > above mentioned error.Now i have defined that pattern and it is > compiling without any error.
It should not have gotten a segmentation fault in that case. Something odd is still happening. > It was by luck that i figured out that "bgtu" was missing.Would you > please tell me how can i figure out that gcc is trying to match which > pattern.Where in gcc code ,patterns are being matched to those in > backend files. Matching RTL against the patterns defined in the MD file is done in the function recog. This is a generated function and can be found in insn-recog.c in your build directory. Looking at the function is unlikely to be helpful, but looking at calls to recog (there are lots of them) may help. Ian
