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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2010-05-11 20:30:28 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2010-05-11 20:30:28 +0000 |
| commit | 82b07dc4995d48065bd95affff4d8513a5cad4f2 (patch) | |
| tree | 6b6af716b38928b7be1e04fa7e0dceb3c1903251 /lib/CodeGen/MachineRegisterInfo.cpp | |
| parent | d42718080f1f140726220563d741261fd7f661c5 (diff) | |
Simplify the tracking of used physregs to a bulk bitor followed by a transitive
closure after allocating all blocks.
Add a few more test cases for -regalloc=fast.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103500 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/MachineRegisterInfo.cpp')
| -rw-r--r-- | lib/CodeGen/MachineRegisterInfo.cpp | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/lib/CodeGen/MachineRegisterInfo.cpp b/lib/CodeGen/MachineRegisterInfo.cpp index ef794d5ae3..4a150435ce 100644 --- a/lib/CodeGen/MachineRegisterInfo.cpp +++ b/lib/CodeGen/MachineRegisterInfo.cpp @@ -267,6 +267,15 @@ MachineRegisterInfo::EmitLiveInCopies(MachineBasicBlock *EntryMBB, EntryMBB->addLiveIn(I->first); } +void MachineRegisterInfo::closePhysRegsUsed(const TargetRegisterInfo &TRI) { + for (int i = UsedPhysRegs.find_first(); i >= 0; + i = UsedPhysRegs.find_next(i)) + for (const unsigned *SS = TRI.getSubRegisters(i); + unsigned SubReg = *SS; ++SS) + if (SubReg > i) + UsedPhysRegs.set(SubReg); +} + #ifndef NDEBUG void MachineRegisterInfo::dumpUses(unsigned Reg) const { for (use_iterator I = use_begin(Reg), E = use_end(); I != E; ++I) |