gcc/

gcc/
	PR target/38598
	* config/mips/mips.md (extendsidi2): Add an "l" alternative.
	Update commentary.

gcc/testsuite/
	PR target/38598
	* gcc.target/mips/madd-7.c: Remove -mlong32.
	* gcc.target/mips/msub-7.c: Likewise.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@171572 138bc75d-0d04-0410-961f-82ee72b054a4