https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64851
Bug ID: 64851
Summary: [SH] Add atomic not
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: olegendo at gcc dot gnu.org
Target: sh*-*-*
Although the __atomic builtins cover only add,sub,or,xor,and,nand, an atomic
not operation can be implicitly done by
- xor (val, -1)
- nand (val, -1)
Combine is already trying to simplify such patterns into a not inside the
atomic patterns.
