2003-07-10 Kazu Hirata <kazu@cs.umass.edu>
PR c/11449
* fold-const.c (sign_bit_p): Return EXP if VAL is the sign bit
of HOST_WIDE_INT.
(fold_single_bit_test): If sign_bit_p() fails, assume that the
bit being tested is not a sign bit.
2003-07-04 Jeff Law <law@redhat.com>
PR c/11428
* expr.c (do_store_flag): Pass in the correct result type
when calling fold_single_bit_test.
* fold-const.c (fold_single_bit_test): Use result_type for the
result when folding a sign bit test.
2003-07-02 Jeff Law <law@redhat.com>
* expr.c (do_store_flag): Remove special case folding for
single bit tests. Instead call back into the commonized folder
routine.
* fold-const.c (fold_single_bit_test): New function, mostly
extracted from do_store_flag, with an additional case extracted
from fold.
(fold): Call fold_single_bit_test appropriately.
* tree.h (fold_single_bit_test): Prototype.
12448037ad