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| 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/RegAllocPBQP.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/RegAllocPBQP.cpp')
| -rw-r--r-- | lib/CodeGen/RegAllocPBQP.cpp | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/lib/CodeGen/RegAllocPBQP.cpp b/lib/CodeGen/RegAllocPBQP.cpp index 984aab2a7a..2722490477 100644 --- a/lib/CodeGen/RegAllocPBQP.cpp +++ b/lib/CodeGen/RegAllocPBQP.cpp @@ -208,8 +208,6 @@ std::auto_ptr<PBQPRAProblem> PBQPBuilder::build(MachineFunction *mf, mri->setPhysRegUsed(Reg); } - BitVector reservedRegs = tri->getReservedRegs(*mf); - // Iterate over vregs. for (RegSet::const_iterator vregItr = vregs.begin(), vregEnd = vregs.end(); vregItr != vregEnd; ++vregItr) { @@ -227,7 +225,7 @@ std::auto_ptr<PBQPRAProblem> PBQPBuilder::build(MachineFunction *mf, ArrayRef<uint16_t> rawOrder = trc->getRawAllocationOrder(*mf); for (unsigned i = 0; i != rawOrder.size(); ++i) { unsigned preg = rawOrder[i]; - if (reservedRegs.test(preg)) + if (mri->isReserved(preg)) continue; // vregLI crosses a regmask operand that clobbers preg. |