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Switch most getReservedRegs() clients to the MRI equivalent.

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Using the cached bit vector in MRI avoids comstantly allocating and
recomputing the reserved register bit vector.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165983 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen
2012-10-15 21:57:41 +00:00
parent e4f273908b
commit fb9ebbf236
12 changed files with 28 additions and 52 deletions
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6
include/llvm/CodeGen/LiveVariables.h
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@@ -126,12 +126,6 @@ private:
/// building live intervals.
SparseBitVector<> PHIJoins;
/// 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 ReservedRegisters;
private: // Intermediate data structures
MachineFunction *MF;