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gcc: PR middle-end/30311 * caller-save.c (add_stored_regs): Only handle SUBREGs if inner REG is a hard register. Do not modify REG before calling subreg_nregs. * rtlanal.c (subreg_get_info): Don't assert size of XMODE is a multiple of the size of YMODE for certain lowpart cases. gcc/testsuite: * gcc.c-torture/compile/pr30311.c: New test. From-SVN: r120329
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