Am 10.03.2013 17:51, schrieb Ian Lance Taylor: > On 3/10/13, Jens Mehler <jens.mehler@xxxxxxxxxx> wrote: >> I have ported the GCC-4.5.3 for a 32-bit CPU. >> Building GCC works like charm, even assembling several tests I wrote >> myself works. >> After porting the Gnu-Binutils I took my first approach of building libgcc. >> Poorly it runs into an error. >> >> ../../../gcc-4.5.3/libgcc/../gcc/libgcc2.c: In function '__powidf2': >> ../../../gcc-4.5.3/libgcc/../gcc/libgcc2.c:1739:1: internal compiler >> error: in use_type, at var-tracking.c:4903 >> >> On var-tracking.c line 4903: >> gcc_assert (REGNO (loc) < FIRST_PSEUDO_REGISTER); >> loc is an RTX. >> >> Can someone please give me pointer where the problem might be. >> If additional information is I will provide them. > Well, there is something wrong with your port. It's pretty hard to > say what it is, though. The var tracking pass runs after the register > allocation pass, which means that at that point in the compilation > there should not be any pseudo-registers, only hard registers. > Somehow you have a pseudo-register left. I don't know how. > > Ian > That's what I suspected but never actually got any proof of that. >From what I gathered while working on that: Whenever I change my the mask for GENERAL_REGS in REG_CLASS_CONTENTS the error is in a different function is libgcc. Maybe I should really split out some regs and create another class for them, because right now all registers GCC can use are in the same class : GENERAL_REGS. I'll do that and see what happens. Thanks for the reply :) ~ Jens
