diff options
| author | Jim Laskey <jlaskey@mac.com> | 2006-07-21 21:15:20 +0000 |
|---|---|---|
| committer | Jim Laskey <jlaskey@mac.com> | 2006-07-21 21:15:20 +0000 |
| commit | cd4317efcf334be10d9a98008a1445d6e12a7712 (patch) | |
| tree | 82f4e6381dbe6669926e797094654c0f430ed18c /lib/CodeGen/RegAllocSimple.cpp | |
| parent | 60f09928a0d22d5927ff0a40fe9163cf1ba1014a (diff) | |
Eliminate data relocations by using NULL instead of global empty list.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29250 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/RegAllocSimple.cpp')
| -rw-r--r-- | lib/CodeGen/RegAllocSimple.cpp | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/lib/CodeGen/RegAllocSimple.cpp b/lib/CodeGen/RegAllocSimple.cpp index 5d94f0af85..c6faead658 100644 --- a/lib/CodeGen/RegAllocSimple.cpp +++ b/lib/CodeGen/RegAllocSimple.cpp @@ -166,12 +166,16 @@ void RegAllocSimple::AllocateBasicBlock(MachineBasicBlock &MBB) { unsigned Opcode = MI->getOpcode(); const TargetInstrDescriptor &Desc = TM->getInstrInfo()->get(Opcode); const unsigned *Regs; - for (Regs = Desc.ImplicitUses; *Regs; ++Regs) - RegsUsed[*Regs] = true; + if (Desc.ImplicitUses) { + for (Regs = Desc.ImplicitUses; *Regs; ++Regs) + RegsUsed[*Regs] = true; + } - for (Regs = Desc.ImplicitDefs; *Regs; ++Regs) { - RegsUsed[*Regs] = true; - PhysRegsEverUsed[*Regs] = true; + if (Desc.ImplicitDefs) { + for (Regs = Desc.ImplicitDefs; *Regs; ++Regs) { + RegsUsed[*Regs] = true; + PhysRegsEverUsed[*Regs] = true; + } } // Loop over uses, move from memory into registers. |