diff options
| author | Graham Stott <grahams@redhat.com> | 2001-08-08 06:15:20 +0000 |
|---|---|---|
| committer | Graham Stott <grahams@gcc.gnu.org> | 2001-08-08 06:15:20 +0000 |
| commit | e61465ed1f203f2b68cade3078da004459e09f30 (patch) | |
| tree | c29bbb61d16cf94decf4ff4f7348415e4bd910bf /gcc/combine.c | |
| parent | 33590f13b26b9d79f41ba5c7dc9dea282daaa8bb (diff) | |
| download | gcc-e61465ed1f203f2b68cade3078da004459e09f30.zip gcc-e61465ed1f203f2b68cade3078da004459e09f30.tar.gz gcc-e61465ed1f203f2b68cade3078da004459e09f30.tar.bz2 | |
combine.c (combine_simplify_rtx): Update comment and remove erroneous test.
* combine.c (combine_simplify_rtx): Update comment and
remove erroneous test.
From-SVN: r44703
Diffstat (limited to 'gcc/combine.c')
| -rw-r--r-- | gcc/combine.c | 5 |
1 files changed, 2 insertions, 3 deletions
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); |