diff options
Diffstat (limited to 'llvm/lib/CodeGen/RegisterScavenging.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/RegisterScavenging.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/RegisterScavenging.cpp b/llvm/lib/CodeGen/RegisterScavenging.cpp index b7836b4..2cd5233 100644 --- a/llvm/lib/CodeGen/RegisterScavenging.cpp +++ b/llvm/lib/CodeGen/RegisterScavenging.cpp @@ -400,11 +400,14 @@ unsigned RegScavenger::scavengeRegister(const TargetRegisterClass *RC, unsigned NeedAlign = RC->getAlignment(); unsigned SI = Scavenged.size(), Diff = UINT_MAX; + int FIB = MFI.getObjectIndexBegin(), FIE = MFI.getObjectIndexEnd(); for (unsigned I = 0; I < Scavenged.size(); ++I) { if (Scavenged[I].Reg != 0) continue; // Verify that this slot is valid for this register. int FI = Scavenged[I].FrameIndex; + if (FI < FIB || FI >= FIE) + continue; unsigned S = MFI.getObjectSize(FI); unsigned A = MFI.getObjectAlignment(FI); if (NeedSize > S || NeedAlign > A) @@ -425,7 +428,7 @@ unsigned RegScavenger::scavengeRegister(const TargetRegisterClass *RC, if (SI == Scavenged.size()) { // We need to scavenge a register but have no spill slot, the target // must know how to do it (if not, we'll assert below). - Scavenged.push_back(ScavengedInfo()); + Scavenged.push_back(ScavengedInfo(FIE)); } // Avoid infinite regress |