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[MachineRegisterInfo] Document what is the expected metric for the size of generic registers 

llvm-svn: 265561
This commit is contained in:
Quentin Colombet 2016-04-06 16:51:04 +00:00
parent 97a67572d6
commit a1ca39d310
1 changed files with 2 additions and 2 deletions
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4
llvm/include/llvm/CodeGen/MachineRegisterInfo.h
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@ -600,11 +600,11 @@ public:
///
unsigned createVirtualRegister(const TargetRegisterClass *RegClass);
/// Get the size of \p VReg or 0 if VReg is not a generic
/// Get the size in bits of \p VReg or 0 if VReg is not a generic
/// (target independent) virtual register.
unsigned getSize(unsigned VReg) const;
/// Set the size of \p VReg to \p Size.
/// Set the size in bits of \p VReg to \p Size.
/// Although the size should be set at build time, mir infrastructure
/// is not yet able to do it.
void setSize(unsigned VReg, unsigned Size);