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s390: rearrange temp moves in s390_expand_cs_hqi

From: Richard Henderson <rth at redhat dot com>
To: Ulrich Weigand <uweigand at de dot ibm dot com>, GCC Patches <gcc-patches at gcc dot gnu dot org>
Date: Wed, 08 Aug 2012 11:32:48 -0700
Subject: s390: rearrange temp moves in s390_expand_cs_hqi

In the same vein as your CAS boolean output patch, if we rearrange the
copies here we can get the combined compare-and-branch insn for the z10.
I see that the z196 prefers not to use those, but the number of insns
in that case remains the same, merely in a different order.

Can you please test with --with-arch=z10?


r~



	* config/s390/s390.c (s390_expand_cs_hqi): Copy val to a temp before
	performing the compare for the restart loop.

Attachment: commit-7c855c6
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- Re: s390: rearrange temp moves in s390_expand_cs_hqi
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