diff options
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/combine.c | 7 |
2 files changed, 10 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index fe7eec1..9592319 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +Mon Aug 2 16:27:42 1999 Jim Wilson <wilson@cygnus.com> + + * combine.c (force_to_mode, case LSHIFTRT): Add goto shiftrt. + (force_to_mode, case ASHIFTRT): Add shiftrt label. + Tue Aug 3 00:45:02 1999 J"orn Rennecke <amylaar@cygnus.co.uk> * loop.c (strength_reduce): When doing biv->giv conversion, update diff --git a/gcc/combine.c b/gcc/combine.c index c9736e5..c922c86 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -6574,7 +6574,8 @@ force_to_mode (x, mode, mask, reg, just_select) x = gen_binary (LSHIFTRT, GET_MODE (x), XEXP (x, 0), GEN_INT (GET_MODE_BITSIZE (GET_MODE (x)) - exact_log2 (mask + 1))); - break; + + goto shiftrt; case ASHIFTRT: /* If we are just looking for the sign bit, we don't need this shift at @@ -6639,7 +6640,9 @@ force_to_mode (x, mode, mask, reg, just_select) if (mask == 1) x = gen_binary (LSHIFTRT, GET_MODE (x), XEXP (x, 0), XEXP (x, 1)); - /* If this is a sign-extension operation that just affects bits + shiftrt: + + /* If this is a zero- or sign-extension operation that just affects bits we don't care about, remove it. Be sure the call above returned something that is still a shift. */ |