diff options
Diffstat (limited to 'llvm/lib/Target/AMDGPU/SIFoldOperands.cpp')
| -rw-r--r-- | llvm/lib/Target/AMDGPU/SIFoldOperands.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/Target/AMDGPU/SIFoldOperands.cpp b/llvm/lib/Target/AMDGPU/SIFoldOperands.cpp index fed3778..82789bc 100644 --- a/llvm/lib/Target/AMDGPU/SIFoldOperands.cpp +++ b/llvm/lib/Target/AMDGPU/SIFoldOperands.cpp @@ -722,7 +722,8 @@ bool SIFoldOperandsImpl::updateOperand(FoldCandidate &Fold) const { return false; } - if (!MRI->constrainRegClass(New->getReg(), ConstrainRC)) { + if (New->getReg().isVirtual() && + !MRI->constrainRegClass(New->getReg(), ConstrainRC)) { LLVM_DEBUG(dbgs() << "Cannot constrain " << printReg(New->getReg(), TRI) << TRI->getRegClassName(ConstrainRC) << '\n'); return false; |