diff options
| author | Dimitry Andric <dim@FreeBSD.org> | 2019-10-23 17:51:42 +0000 |
|---|---|---|
| committer | Dimitry Andric <dim@FreeBSD.org> | 2019-10-23 17:51:42 +0000 |
| commit | 1d5ae1026e831016fc29fd927877c86af904481f (patch) | |
| tree | 2cdfd12620fcfa5d9e4a0389f85368e8e36f63f9 /lib/CodeGen/GlobalISel/CSEMIRBuilder.cpp | |
| parent | e6d1592492a3a379186bfb02bd0f4eda0669c0d5 (diff) | |
Notes
Diffstat (limited to 'lib/CodeGen/GlobalISel/CSEMIRBuilder.cpp')
| -rw-r--r-- | lib/CodeGen/GlobalISel/CSEMIRBuilder.cpp | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/lib/CodeGen/GlobalISel/CSEMIRBuilder.cpp b/lib/CodeGen/GlobalISel/CSEMIRBuilder.cpp index 461bc6038c2c..51a74793f029 100644 --- a/lib/CodeGen/GlobalISel/CSEMIRBuilder.cpp +++ b/lib/CodeGen/GlobalISel/CSEMIRBuilder.cpp @@ -162,6 +162,17 @@ MachineInstrBuilder CSEMIRBuilder::buildInstr(unsigned Opc, return buildConstant(DstOps[0], Cst->getSExtValue()); break; } + case TargetOpcode::G_SEXT_INREG: { + assert(DstOps.size() == 1 && "Invalid dst ops"); + assert(SrcOps.size() == 2 && "Invalid src ops"); + const DstOp &Dst = DstOps[0]; + const SrcOp &Src0 = SrcOps[0]; + const SrcOp &Src1 = SrcOps[1]; + if (auto MaybeCst = + ConstantFoldExtOp(Opc, Src0.getReg(), Src1.getImm(), *getMRI())) + return buildConstant(Dst, MaybeCst->getSExtValue()); + break; + } } bool CanCopy = checkCopyToDefsPossible(DstOps); if (!canPerformCSEForOpc(Opc)) |