gcc/

gcc/
	PR target/38052
	* config/mips/mips.c (machine_function): Update the comment
	above global_pointer.
	(mips_global_pointer): Use INVALID_REGNUM rather than 0 to indicate
	that a function doesn't need a global pointer.
	(mips_current_loadgp_style): Update accordingly.
	(mips_restore_gp): Likewise.
	(mips_output_cplocal): Likewise.
	(mips_expand_prologue): Likewise.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@141925 138bc75d-0d04-0410-961f-82ee72b054a4