Re: [5/9] Create sensible dummy registers

[Jeff Law]

On 05/18/2015 12:21 PM, Richard Sandiford wrote:

Some pieces of code create a temporary REG or MEM and only fill it
in later when they're testing the cost of a particular rtx.  This patch
makes sure that even the dummy REG or MEM is valid, rather than force
the gen_* code to handle garbage values.


gcc/
        * caller-save.c (init_caller_save): Use word_mode and
        FIRST_PSEUDO_REGISTER when creating temporary rtxes.
        * expr.c (init_expr_target): Likewise.
        * ira.c (setup_prohibited_mode_move_regs): Likewise.
        * postreload.c (reload_cse_regs_1): Likewise.

OK.
jeff