Jakob Stoklund Olesen 77180e0b40 Handle register mask operands in setPhysRegsDeadExcept(). ...

Calls that use register mask operands don't have implicit defs for
returned values.  The register mask operand handles the call clobber,
but it always behaves like a set of dead defs.

Add live implicit defs for any implicitly defined physregs that are
actually used.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149715 91177308-0d34-0410-b5e6-96231b3b80d8

2012-02-03 21:23:14 +00:00

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