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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/66739] [6 regression] FAIL: gcc.target/aarch64/subs.c scan-assembler subs\tw[0-9] Date: Mon, 06 Jul 2015 14:43:00 -0000 [thread overview] Message-ID: <bug-66739-4-u4NR3OCBIZ@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-66739-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66739 --- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> --- I am testing Index: gcc/match.pd =================================================================== --- gcc/match.pd (revision 225453) +++ gcc/match.pd (working copy) @@ -1336,8 +1353,9 @@ (define_operator_list CBRT BUILT_IN_CBRT attempts to synthetize ABS_EXPR. */ (for cmp (eq ne) (simplify - (cmp (minus @0 @1) integer_zerop) - (cmp @0 @1))) + (cmp (minus@2 @0 @1) integer_zerop) + (if (single_use (@2)) + (cmp @0 @1)))) /* Transform comparisons of the form X * C1 CMP 0 to X CMP 0 in the signed arithmetic case. That form is created by the compiler
next prev parent reply other threads:[~2015-07-06 14:43 UTC|newest] Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top 2015-07-02 12:35 [Bug tree-optimization/66739] New: " schwab@linux-m68k.org 2015-07-02 12:37 ` [Bug tree-optimization/66739] " schwab@linux-m68k.org 2015-07-02 12:42 ` rguenth at gcc dot gnu.org 2015-07-02 12:44 ` rguenth at gcc dot gnu.org 2015-07-05 12:34 ` schwab@linux-m68k.org 2015-07-06 14:15 ` schwab@linux-m68k.org 2015-07-06 14:39 ` rguenth at gcc dot gnu.org 2015-07-06 14:43 ` rguenth at gcc dot gnu.org [this message] 2015-07-07 7:47 ` rguenth at gcc dot gnu.org 2015-07-07 8:01 ` rguenth at gcc dot gnu.org
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