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| author | John Wehle <john@feith.com> | 2001-03-09 06:28:21 +0000 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 2001-03-08 23:28:21 -0700 |
| commit | e7d96a83089366d59415e5893a8878c7be65efe0 (patch) | |
| tree | e58d0b35b7101314a27ffafff223d1f068cc7c75 /gcc/rtlanal.c | |
| parent | 4ce693cd329cc4e6b7330403188c087b8abbf72c (diff) | |
| download | gcc-e7d96a83089366d59415e5893a8878c7be65efe0.zip gcc-e7d96a83089366d59415e5893a8878c7be65efe0.tar.gz gcc-e7d96a83089366d59415e5893a8878c7be65efe0.tar.bz2 | |
rtlanal.c (rtx_varies_p): Check operand 0 of a LO_SUM unless for_alias is set.
* rtlanal.c (rtx_varies_p): Check operand 0 of a
LO_SUM unless for_alias is set.
From-SVN: r40340
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)) |