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Commit 13dffcb7 authored by Jakob Stoklund Olesen's avatar Jakob Stoklund Olesen
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Accept null PhysReg arguments to checkRegMaskInterference. 

Calling checkRegMaskInterference(VirtReg) checks if VirtReg crosses any
regmask operands, regardless of the registers they clobber.

llvm-svn: 158563
parent f14a6e5f
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