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mn10300: Emit retf instruction
authorRichard Henderson <rth@redhat.com>
Wed, 19 Jan 2011 18:50:52 +0000 (10:50 -0800)
committerRichard Henderson <rth@gcc.gnu.org>
Wed, 19 Jan 2011 18:50:52 +0000 (10:50 -0800)
commit37a185d79e630fd3ad5acd7ac5a29ac07a5be4d6
tree066424705d9da85f89031dc6070862c03f1f11cbtree | snapshot
parent040c57570147b0a05c29339dd778378b8cf15a56commit | diff
mn10300: Emit retf instruction

Now that we properly track the life of MDR, we can emit
the RETF instruction if MDR has not been modified.  This
insn is 3-4 cycles faster since the return address is
already loaded.

From-SVN: r169013
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