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(find_reloads): Force reload for paradoxical SUBREG of MEM if 

BYTES_BIG_ENDIAN.

From-SVN: r7875
This commit is contained in:
Richard Kenner 1994-08-08 19:25:16 -04:00
parent 1d19ceaaea
commit beb5a9b86e
1 changed files with 4 additions and 1 deletions
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5
gcc/reload.c
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@ -2566,7 +2566,9 @@ find_reloads (insn, replace, ind_levels, live_known, reload_reg_p)
|| GET_CODE (operand) == PLUS
/* We must force a reload of paradoxical SUBREGs
of a MEM because the alignment of the inner value
may not be enough to do the outer reference.
may not be enough to do the outer reference. On
big-endian machines, it may also reference outside
the object.
On machines that extend byte operations and we have a
SUBREG where both the inner and outer modes are no wider
@ -2584,6 +2586,7 @@ find_reloads (insn, replace, ind_levels, live_known, reload_reg_p)
< BIGGEST_ALIGNMENT)
&& (GET_MODE_SIZE (operand_mode[i])
> GET_MODE_SIZE (GET_MODE (operand))))
|| (GET_CODE (operand) == MEM && BYTES_BIG_ENDIAN)
#ifdef LOAD_EXTEND_OP
|| (GET_MODE_SIZE (operand_mode[i]) <= UNITS_PER_WORD
&& (GET_MODE_SIZE (GET_MODE (operand))