This is the mail archive of the gcc-patches@gcc.gnu.org mailing list for the GCC project.

Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

Re: [PING][PATCH][REVISED] Fix PR middle-end/PR28690, modify swap_commutative_operands_p

+      if (REG_P (op))
+	return (REG_POINTER (op)) ? -1 : -3;
+      else
+	return (MEM_P (op) && MEM_POINTER (op)) ? -2 : -4;

2.

-       *addr = gen_rtx_PLUS (Pmode, *addr, base);
+       *addr = simplify_gen_binary (PLUS, Pmode, base, *addr);

3. REGNO sorting.

4. cosmetic change.

You can do that by yourself. But if you know your architecture, you also know that this is useless as neither of this changes can cause any pessimization per se, only interactions with unpredictable features of the architecture (scheduling, etc.).

Paolo

Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]