LoongArch: Add code generation support for call36 function calls.
When compiling with '-mcmodel=medium', the function call is made through
'pcaddu18i+jirl' if binutils supports call36, otherwise the
native implementation 'pcalau12i+jirl' is used.
gcc/ChangeLog:
* config.in: Regenerate.
* config/loongarch/loongarch-opts.h (HAVE_AS_SUPPORT_CALL36): Define macro.
* config/loongarch/loongarch.cc (loongarch_legitimize_call_address):
If binutils supports call36, the function call is not split over expand.
* config/loongarch/loongarch.md: Add call36 generation code.
* config/loongarch/predicates.md: Likewise.
* configure: Regenerate.
* configure.ac: Check whether binutils supports call36.
gcc/testsuite/ChangeLog:
* gcc.target/loongarch/func-call-medium-5.c: If the assembler supports call36,
the test is abandoned.
* gcc.target/loongarch/func-call-medium-6.c: Likewise.
* gcc.target/loongarch/func-call-medium-7.c: Likewise.
* gcc.target/loongarch/func-call-medium-8.c: Likewise.
* lib/target-supports.exp: Added a function to see if the assembler supports
the call36 relocation.
* gcc.target/loongarch/func-call-medium-call36-1.c: New test.
* gcc.target/loongarch/func-call-medium-call36.c: New test.