was illegal for hardregs in CLASS_CANNOT_CHANGE_MODE. */
unsigned int mode_changed:1;
+ /* Nonzero if some references of this web, where in subreg context,
+ but the actual subreg is already stripped (i.e. we don't know the
+ outer mode of the actual reference). */
+ unsigned int subreg_stripped:1;
+
/* Nonzero, when this web stems from the last pass of the allocator,
and all info is still valid (i.e. it wasn't spilled). */
unsigned int old_web:1;
represent the possible resources which could be taken away be a value
in mode M. */
extern HARD_REG_SET hardregs_for_mode[NUM_MACHINE_MODES];
+/* The set of hardregs, for which _any_ mode change is invalid. */
+extern HARD_REG_SET invalid_mode_change_regs;
/* For 0 <= I <= 255, the number of bits set in I. Used to calculate
the number of set bits in a HARD_REG_SET. */
extern unsigned char byte2bitcount[256];