diff options
Diffstat (limited to 'gcc/rtlanal.c')
| -rw-r--r-- | gcc/rtlanal.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/gcc/rtlanal.c b/gcc/rtlanal.c index 237382f..be9374e 100644 --- a/gcc/rtlanal.c +++ b/gcc/rtlanal.c @@ -163,8 +163,10 @@ rtx_varies_p (x, for_alias) case LO_SUM: /* The operand 0 of a LO_SUM is considered constant - (in fact is it related specifically to operand 1). */ - return rtx_varies_p (XEXP (x, 1), for_alias); + (in fact it is related specifically to operand 1) + during alias analysis. */ + return (! for_alias && rtx_varies_p (XEXP (x, 0), for_alias)) + || rtx_varies_p (XEXP (x, 1), for_alias); case ASM_OPERANDS: if (MEM_VOLATILE_P (x)) |