* regrename.c (find_oldest_value_reg): Ignore the value chain if
the original register was copied in a mode with a fewer number of
hard registers than the desired mode.
(copyprop_hardreg_forward_1): Likewise.
(debug_value_data): Fix loop test.
* toplev.c (parse_options_and_default_flags): Reenable
-fcprop-registers at -O1.
From-SVN: r48624
* regrename.c (build_def_use): Don't rename asm operands that
were originally hard registers.
(copyprop_hardreg_forward_1): Likewise.
(find_oldest_value_reg): Copy ORIGINAL_REGNO from source.
* varasm.c (make_decl_rtl): Use gen_rtx_raw_REG. Set ORIGINAL_REGNO.
* gcc.dg/asm-5.c: New.
From-SVN: r48435
* regrename.c (struct value_data): Add max_value_regs.
(init_value_data): Initialize it.
(kill_value): Kill values that overlap the dying register.
(set_value_regno): New.
(kill_set_value, kill_autoinc_value, copy_value): Use it.
(copyprop_hardreg_forward_1): Kill earlyclobber operands
before looking at inputs.
From-SVN: r48028
* reload.c (find_reloads): Mark new USE insns with QImode.
(find_reloads_toplev, find_reloads_address, subst_reg_equivs,
find_reloads_subreg_address): Likewise.
* regrename.c (note_sets, clear_dead_regs): Abort if pseudos are
encountered.
* reload1.c (reload_combine_note_use): Likewise, inside USEs and
CLOBBERs.
(reload): Make sure there are no USEs with mode other than
VOIDmode. At the end, remove those marked with QImode.
From-SVN: r45889
* regrename.c (regrename_optimize): Verify that all registers of
a multiple register mode are available.
(scan_rtx_address): Accept the mode of the address; all callers
changed.
From-SVN: r37109
* regrename.c (regno_first_use_in): Wrap prototype in PARAMS.
(regrename_optimize): Rename variables `def_uses' and
`ext_basic_blocks' to avoid conflicts with similarly named
typedefs in traditional C.
From-SVN: r32921
