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[Bug rtl-optimization/78952] Combine does not convert 8-bit sign-extract to a zero-extract for QImode operations
- From: "segher at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Tue, 17 Jan 2017 18:39:26 +0000
- Subject: [Bug rtl-optimization/78952] Combine does not convert 8-bit sign-extract to a zero-extract for QImode operations
- Auto-submitted: auto-generated
- References: <bug-78952-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78952
--- Comment #3 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Note avr has an "any_extract" code_iterator for this. That of course
is a crutch but could be a workaround for you for now.