On 05/03/2011 05:13 AM, Nick Clifton wrote:
> The problem I found here was that I did not know how to find all of
> the test-and-loop-back insns if the loop spanned multiple blocks.
> The revised patch includes a comment saying that loops spanning
> multiple blocks could be supported, but I would l
Hi Richard,
Thanks for the patch review. Sorry for not responding earlier, but
some other work got in the way.
I have attached a revised patch which addresses all of the points you
raised except one:
+ else if (loop->header != loop->latch
+ reason = "it is not a simp
> + /* If the comparison has not already been split out of the branch
> + then do so now. */
> + if (REGNO (cmp_reg) != CC_REG)
> +{
> + rtx cmp;
> +
> + cmp = emit_insn_before (gen_cmpsi (cmp_reg, XEXP (comparison, 1)),
> branch);
> +
> + DUMP ("Extracted comparison from
Hi Richard,
Thanks for the review. Attached is a revised patch which addresses
the issues that you raised:
+/* A special mode used to distinguish the Lcc branch instruction
+ from the Bcc branch instruction. */
+CC_MODE (CC_LCC);
Why not just use an unspec on the lcc insn.
I should
