load zero and three to do clearing. */
if (TARGET_ALTIVEC && align >= 128)
clear_step = 16;
- else if (TARGET_POWERPC64 && align >= 32)
+ else if (TARGET_POWERPC64 && (align >= 64 || !STRICT_ALIGNMENT))
clear_step = 8;
else if (TARGET_SPE && align >= 64)
clear_step = 8;
mode = V2SImode;
}
else if (bytes >= 8 && TARGET_POWERPC64
- /* 64-bit loads and stores require word-aligned
- displacements. */
- && (align >= 64 || (!STRICT_ALIGNMENT && align >= 32)))
+ && (align >= 64 || !STRICT_ALIGNMENT))
{
clear_bytes = 8;
mode = DImode;
+ if (offset == 0 && align < 64)
+ {
+ rtx addr;
+
+ /* If the address form is reg+offset with offset not a
+ multiple of four, reload into reg indirect form here
+ rather than waiting for reload. This way we get one
+ reload, not one per store. */
+ addr = XEXP (orig_dest, 0);
+ if ((GET_CODE (addr) == PLUS || GET_CODE (addr) == LO_SUM)
+ && GET_CODE (XEXP (addr, 1)) == CONST_INT
+ && (INTVAL (XEXP (addr, 1)) & 3) != 0)
+ {
+ addr = copy_addr_to_reg (addr);
+ orig_dest = replace_equiv_address (orig_dest, addr);
+ }
+ }
}
else if (bytes >= 4 && (align >= 32 || !STRICT_ALIGNMENT))
{ /* move 4 bytes */
gen_func.movmemsi = gen_movmemsi_4reg;
}
else if (bytes >= 8 && TARGET_POWERPC64
- /* 64-bit loads and stores require word-aligned
- displacements. */
- && (align >= 64 || (!STRICT_ALIGNMENT && align >= 32)))
+ && (align >= 64 || !STRICT_ALIGNMENT))
{
move_bytes = 8;
mode = DImode;
gen_func.mov = gen_movdi;
+ if (offset == 0 && align < 64)
+ {
+ rtx addr;
+
+ /* If the address form is reg+offset with offset not a
+ multiple of four, reload into reg indirect form here
+ rather than waiting for reload. This way we get one
+ reload, not one per load and/or store. */
+ addr = XEXP (orig_dest, 0);
+ if ((GET_CODE (addr) == PLUS || GET_CODE (addr) == LO_SUM)
+ && GET_CODE (XEXP (addr, 1)) == CONST_INT
+ && (INTVAL (XEXP (addr, 1)) & 3) != 0)
+ {
+ addr = copy_addr_to_reg (addr);
+ orig_dest = replace_equiv_address (orig_dest, addr);
+ }
+ addr = XEXP (orig_src, 0);
+ if ((GET_CODE (addr) == PLUS || GET_CODE (addr) == LO_SUM)
+ && GET_CODE (XEXP (addr, 1)) == CONST_INT
+ && (INTVAL (XEXP (addr, 1)) & 3) != 0)
+ {
+ addr = copy_addr_to_reg (addr);
+ orig_src = replace_equiv_address (orig_src, addr);
+ }
+ }
}
else if (TARGET_STRING && bytes > 4 && !TARGET_POWERPC64)
{ /* move up to 8 bytes at a time */