diff options
| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-10-15 21:57:41 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-10-15 21:57:41 +0000 |
| commit | fb9ebbf236974beac31705eaeb9f50ab585af6ab (patch) | |
| tree | 7d01bb6c43ca1854b208c80f34b6158644eb78f9 /lib/CodeGen/RegisterScavenging.cpp | |
| parent | e4f273908bd37df5f0f6b2c575dcb2af99f6b85b (diff) | |
Switch most getReservedRegs() clients to the MRI equivalent.
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
Diffstat (limited to 'lib/CodeGen/RegisterScavenging.cpp')
| -rw-r--r-- | lib/CodeGen/RegisterScavenging.cpp | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/lib/CodeGen/RegisterScavenging.cpp b/lib/CodeGen/RegisterScavenging.cpp index d673794e1b..5ec6564ce3 100644 --- a/lib/CodeGen/RegisterScavenging.cpp +++ b/lib/CodeGen/RegisterScavenging.cpp @@ -92,9 +92,6 @@ void RegScavenger::enterBasicBlock(MachineBasicBlock *mbb) { KillRegs.resize(NumPhysRegs); DefRegs.resize(NumPhysRegs); - // Create reserved registers bitvector. - ReservedRegs = TRI->getReservedRegs(MF); - // Create callee-saved registers bitvector. CalleeSavedRegs.resize(NumPhysRegs); const uint16_t *CSRegs = TRI->getCalleeSavedRegs(&MF); @@ -225,9 +222,9 @@ void RegScavenger::getRegsUsed(BitVector &used, bool includeReserved) { used = RegsAvailable; used.flip(); if (includeReserved) - used |= ReservedRegs; + used |= MRI->getReservedRegs(); else - used.reset(ReservedRegs); + used.reset(MRI->getReservedRegs()); } unsigned RegScavenger::FindUnusedReg(const TargetRegisterClass *RC) const { |