Re: [PATCH v2 2/2] LoongArch: When the code model is extreme, the symbol address is obtained through macro instructions regardless of the value of -mexplicit-relocs.

[chenglulu]

I found an issue bootstrapping GCC with -mcmodel=extreme in BOOT_CFLAGS:
we need a target hook to tell the generic code
UNSPEC_LA_PCREL_64_PART{1,2} are just a wrapper around symbols, or we'll
see millions lines of messages like
../../gcc/gcc/tree.h:4171:1: note: non-delegitimized UNSPEC
UNSPEC_LA_PCREL_64_PART1 (42) found in variable location

I build GCC with -mcmodel=extreme in BOOT_CFLAGS, but I haven't 
reproduced the problem you mentioned.

$../configure --host=loongarch64-linux-gnu 
--target=loongarch64-linux-gnu --build=loongarch64-linux-gnu \

        --with-arch=loongarch64 --with-abi=lp64d --enable-tls 
--enable-languages=c,c++,fortran,lto --enable-plugin \

        --disable-multilib --disable-host-shared --enable-bootstrap 
--enable-checking=release

    $ make BOOT_FLAGS="-mcmodel=extreme"

What did I do wrong?:-(