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(parent: 2df46b0) | patch
(can_combine_p): Don't reject SUBREG assignments here.
authorRichard Kenner <kenner@gcc.gnu.org>
Thu, 19 Aug 1993 20:20:37 +0000 (16:20 -0400)
committerRichard Kenner <kenner@gcc.gnu.org>
Thu, 19 Aug 1993 20:20:37 +0000 (16:20 -0400)
commit423012407eef5b91fa84417f05d4db3bc8a2db1a
tree25b202b697c8a81f3a05f3c20c180d382545bbf3tree
parent2df46b06a27b26a2b142fc28db58c57985bf0b6ecommit | diff
(can_combine_p): Don't reject SUBREG assignments here.

(subst): Instead, do it here, but also allow it in as a nested SUBREG since
the inner one will be eliminated.
(simplify_and_const_int): Convert (and (neg X) (const_int 1)) to a shift
when X is known to be either 0 or 1.

From-SVN: r5187
gcc/combine.c diff | blob | history