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(parent: be8fe47) | patch
(REVERSIBLE_CC_MODE): Add default definition.
authorRichard Kenner <kenner@gcc.gnu.org>
Sat, 12 Feb 1994 13:49:59 +0000 (08:49 -0500)
committerRichard Kenner <kenner@gcc.gnu.org>
Sat, 12 Feb 1994 13:49:59 +0000 (08:49 -0500)
commit9210df584cc37eb1d6da14dc5011be01d727cc5f
tree91a7510737929a2a35275eae80a9a9cfb6903e79tree
parentbe8fe4709597973e4a6b029aca7b3d966c05dbd1commit | diff
(REVERSIBLE_CC_MODE): Add default definition.

(reversible_comparison_p): REVERSIBLE_CC_MODE.

(subst): Always simplify true and false arms if if_then_else_cond succeeds.
(subst, case IF_THEN_ELSE): More canonicalizations; delete some redundant
tests.
(if_then_else_cond): Canonicalize (OP (mult COMP A) (mult REV_COMP B)).
(gen_binary): Simplify (REL_OP (compare X Y) 0) here.

From-SVN: r6540
gcc/combine.c diff | blob | history