PR target/41456
* config/m32c/m32c.h (REG_CLASS_CONTENTS): Add R13.
(reg_class): Likewise.
(REG_CLASS_NAMES): Likewise.
* config/m32c/m32c.c (m32c_reg_class_from_constraint): Likewise.

* config/m32c/m32c.c (m32c_override_options): Disable -fivopts for
M32C.

From-SVN: r152144