diff options
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/combine.c | 5 |
2 files changed, 7 insertions, 3 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index b995be2..329aad7 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2001-08-08 Graham Stott <grahams@redhat.com> + + * combine.c (combine_simplify_rtx): Update comment and + remove erroneous test. + 2001-08-07 Neil Booth <neil@daikokuya.demon.co.uk> * cppinit.c (cpp_finish): Pop the final buffer without comment. diff --git a/gcc/combine.c b/gcc/combine.c index 62ab3aa..8123180 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -3856,13 +3856,12 @@ combine_simplify_rtx (x, op0_mode, last, in_dest) XEXP (XEXP (x, 0), 1)))) return reversed; - /* (ashiftrt foo C) where C is the number of bits in FOO minus 1 - is (lt foo (const_int 0)) if STORE_FLAG_VALUE is -1, so we can + /* (not (ashiftrt foo C)) where C is the number of bits in FOO minus 1 + is (ge foo (const_int 0)) if STORE_FLAG_VALUE is -1, so we can perform the above simplification. */ if (STORE_FLAG_VALUE == -1 && GET_CODE (XEXP (x, 0)) == ASHIFTRT - && XEXP (x, 1) == const1_rtx && GET_CODE (XEXP (XEXP (x, 0), 1)) == CONST_INT && INTVAL (XEXP (XEXP (x, 0), 1)) == GET_MODE_BITSIZE (mode) - 1) return gen_rtx_GE (mode, XEXP (XEXP (x, 0), 0), const0_rtx); |