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Allow LiveVariables to track liveness of more registers.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34377 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2007-02-17 11:07:08 +00:00
parent eceada6728
commit 64ff3c349b
1 changed files with 5 additions and 4 deletions
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9
include/llvm/CodeGen/LiveVariables.h
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@ -36,6 +36,7 @@
namespace llvm {
class MRegisterInfo;
class BitVector;
class LiveVariables : public MachineFunctionPass {
public:
@ -108,11 +109,11 @@ private:
///
std::vector<VarInfo> VirtRegInfo;
/// AllocatablePhysicalRegisters - This vector keeps track of which registers
/// are actually register allocatable by the target machine. We can not track
/// liveness for values that are not in this set.
/// ReservedRegisters - This vector keeps track of which registers
/// are reserved register which are not allocatable by the target machine.
/// We can not track liveness for values that are in this set.
///
BitVector AllocatablePhysicalRegisters;
BitVector ReservedRegisters;
private: // Intermediate data structures
const MRegisterInfo *RegInfo;