diff options
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/rtlanal.c | 4 |
2 files changed, 8 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 68c3d86de6c..78b0a8ac045 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2003-04-18 Roger Sayle <roger@eyesopen.com> + + * rtlanal.c (reg_overlap_mentioned_p): Handle ZERO_EXTRACT + and SIGN_EXTRACT. + 2003-04-18 Eric Botcazou <ebotcazou@libertysurf.fr> PR optimization/7675 diff --git a/gcc/rtlanal.c b/gcc/rtlanal.c index 3b024adc89d..80fff6310bf 100644 --- a/gcc/rtlanal.c +++ b/gcc/rtlanal.c @@ -1573,7 +1573,9 @@ reg_overlap_mentioned_p (x, in) unsigned int regno, endregno; /* Overly conservative. */ - if (GET_CODE (x) == STRICT_LOW_PART) + if (GET_CODE (x) == STRICT_LOW_PART + || GET_CODE (x) == ZERO_EXTRACT + || GET_CODE (x) == SIGN_EXTRACT) x = XEXP (x, 0); /* If either argument is a constant, then modifying X can not affect IN. */ |