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[Bug target/53987] [SH] Unnecessary zero-extensions
- From: "olegendo at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 09 Sep 2015 12:15:29 +0000
- Subject: [Bug target/53987] [SH] Unnecessary zero-extensions
- Auto-submitted: auto-generated
- References: <bug-53987-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53987
--- Comment #13 from Oleg Endo <olegendo at gcc dot gnu.org> ---
attachment 36309 of PR 67506 is another example. It contains the following
code sequence:
mov.b @r2,r0 <<
extu.b r0,r0 <<
tst #128,r0
bt/s .L11
extu.w r0,r2 <<
mov r1,r2