gcc/ChangeLog.subreg

   1 2013-12-11   H.J. Lu  <hongjiu.lu@intel.com>
   2
   3         * combine.c (subst): Pass subreg byte to REG_CANNOT_CHANGE_MODE_P.
   4         (simplify_set): Likewise.
   5         * emit-rtl.c (validate_subreg): Likewise.
   6         * recog.c (register_operand): Likewise.
   7         * rtlanal.c (simplify_subreg_regno): Likewise.
   8         * hard-reg-set.h (REG_CANNOT_CHANGE_MODE_P): Add SUBREG_BYTE
   9         and pass it to CANNOT_CHANGE_MODE_CLASS.
  10         * regcprop.c (mode_change_ok): Pass unknown subreg byte to
  11         REG_CANNOT_CHANGE_MODE_P.
  12         * reginfo.c (record_subregs_of_mode): Pass unknown subreg byte
  13         to CANNOT_CHANGE_MODE_CLASS.
  14         * postreload.c (reload_cse_simplify_set): Pass subreg byte to
  15         CANNOT_CHANGE_MODE_CLASS.
  16         (reload_cse_simplify_operands): Likewise.
  17         * reload.c (push_reload): Likewise.
  18         * reload1.c (choose_reload_regs): Pass subreg byte to
  19         REG_CANNOT_CHANGE_MODE_P.
  20         (inherit_piecemeal_p): Pass unknown subreg byte to
  21         REG_CANNOT_CHANGE_MODE_P.
  22         * config/aarch64/aarch64.h (CANNOT_CHANGE_MODE_CLASS): Add
  23         and ignore subreg byte.
  24         * config/alpha/alpha.h (CANNOT_CHANGE_MODE_CLASS): Likewise.
  25         * config/arm/arm.h (CANNOT_CHANGE_MODE_CLASS): Likewise.
  26         * config/ia64/ia64.h (CANNOT_CHANGE_MODE_CLASS): Likewise.
  27         * config/m32c/m32c.h (CANNOT_CHANGE_MODE_CLASS): Likewise.
  28         * config/mep/mep.h (CANNOT_CHANGE_MODE_CLASS): Likewise.
  29         * config/mips/mips.h (CANNOT_CHANGE_MODE_CLASS): Likewise.
  30         * config/msp430/msp430.h (CANNOT_CHANGE_MODE_CLASS): Likewise.
  31         * config/pa/pa32-regs.h (CANNOT_CHANGE_MODE_CLASS): Likewise.
  32         * config/pa/pa64-regs.h (CANNOT_CHANGE_MODE_CLASS): Likewise.
  33         * config/pdp11/pdp11.h (CANNOT_CHANGE_MODE_CLASS): Likewise.
  34         * config/rs6000/rs6000.h (CANNOT_CHANGE_MODE_CLASS): Likewise.
  35         * config/s390/s390.h (CANNOT_CHANGE_MODE_CLASS): Likewise.
  36         * config/score/score.h (CANNOT_CHANGE_MODE_CLASS): Likewise.
  37         * config/sh/sh.h (CANNOT_CHANGE_MODE_CLASS): Likewise.
  38         * config/sparc/sparc.h (CANNOT_CHANGE_MODE_CLASS): Likewise.
  39         * config/spu/spu.h (CANNOT_CHANGE_MODE_CLASS): Likewise.
  40         * config/i386/i386-protos.h (ix86_cannot_change_mode_class): Add
  41         an unsigned int argument.
  42         * config/i386/i386.c (ix86_cannot_change_mode_class): Take subreg
  43         byte.  Return true only if subreg byte is non-zero.
  44         * config/i386/i386.h (CANNOT_CHANGE_MODE_CLASS): Add SUBREG_BYTE
  45         and pass it to ix86_cannot_change_mode_class.
  46         * doc/rtl.texi: Add subreg_byte to CANNOT_CHANGE_MODE_CLASS.
  47         * doc/tm.texi.in: Likewise.
  48         * doc/tm.texi: Regenerated.