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Add assert to isPhysicalRegister and isVirtualRegister to fail when
passed the special 'register' 0. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11842 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -141,12 +141,14 @@ public:
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/// isPhysicalRegister - Return true if the specified register number is in
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/// the physical register namespace.
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static bool isPhysicalRegister(unsigned Reg) {
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assert(Reg && "this is not a register!";
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return Reg < FirstVirtualRegister;
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}
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/// isVirtualRegister - Return true if the specified register number is in
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/// the virtual register namespace.
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static bool isVirtualRegister(unsigned Reg) {
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assert(Reg && "this is not a register!";
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return Reg >= FirstVirtualRegister;
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}
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