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(choose_reload_regs): Don't inherit a reload if the 

previous reload wasn't at least as wide as the current reload.

From-SVN: r2864
This commit is contained in:
Tom Wood 1992-12-11 13:18:32 +00:00
parent d8cfa4ee64
commit db660765c7
1 changed files with 11 additions and 2 deletions
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13
gcc/reload1.c
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@ -4382,13 +4382,20 @@ choose_reload_regs (insn, avoid_return_reg)
if (inheritance)
{
register int regno = -1;
enum machine_mode mode;
if (reload_in[r] == 0)
;
else if (GET_CODE (reload_in[r]) == REG)
regno = REGNO (reload_in[r]);
{
regno = REGNO (reload_in[r]);
mode = GET_MODE (reload_in[r]);
}
else if (GET_CODE (reload_in_reg[r]) == REG)
regno = REGNO (reload_in_reg[r]);
{
regno = REGNO (reload_in_reg[r]);
mode = GET_MODE (reload_in_reg[r]);
}
#if 0
/* This won't work, since REGNO can be a pseudo reg number.
Also, it takes much more hair to keep track of all the things
@ -4403,6 +4410,8 @@ choose_reload_regs (insn, avoid_return_reg)
i = spill_reg_order[REGNO (reg_last_reload_reg[regno])];
if (reg_reloaded_contents[i] == regno
&& (GET_MODE_SIZE (GET_MODE (reg_last_reload_reg[regno]))
>= GET_MODE_SIZE (mode))
&& HARD_REGNO_MODE_OK (spill_regs[i], reload_mode[r])
&& TEST_HARD_REG_BIT (reg_class_contents[(int) reload_reg_class[r]],
spill_regs[i])