diff options
Diffstat (limited to 'llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp')
| -rw-r--r-- | llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp b/llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp index 01a3e78ea48c..0979debe9777 100644 --- a/llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp +++ b/llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp @@ -4197,6 +4197,35 @@ bool AMDGPULegalizerInfo::legalizeImplicitArgPtr(MachineInstr &MI, return true; } +bool AMDGPULegalizerInfo::getLDSKernelId(Register DstReg, + MachineRegisterInfo &MRI, + MachineIRBuilder &B) const { + Function &F = B.getMF().getFunction(); + Optional<uint32_t> KnownSize = + AMDGPUMachineFunction::getLDSKernelIdMetadata(F); + if (KnownSize.has_value()) + B.buildConstant(DstReg, KnownSize.value()); + return false; +} + +bool AMDGPULegalizerInfo::legalizeLDSKernelId(MachineInstr &MI, + MachineRegisterInfo &MRI, + MachineIRBuilder &B) const { + + const SIMachineFunctionInfo *MFI = B.getMF().getInfo<SIMachineFunctionInfo>(); + if (!MFI->isEntryFunction()) { + return legalizePreloadedArgIntrin(MI, MRI, B, + AMDGPUFunctionArgInfo::LDS_KERNEL_ID); + } + + Register DstReg = MI.getOperand(0).getReg(); + if (!getLDSKernelId(DstReg, MRI, B)) + return false; + + MI.eraseFromParent(); + return true; +} + bool AMDGPULegalizerInfo::legalizeIsAddrSpace(MachineInstr &MI, MachineRegisterInfo &MRI, MachineIRBuilder &B, @@ -5636,6 +5665,9 @@ bool AMDGPULegalizerInfo::legalizeIntrinsic(LegalizerHelper &Helper, case Intrinsic::amdgcn_workgroup_id_z: return legalizePreloadedArgIntrin(MI, MRI, B, AMDGPUFunctionArgInfo::WORKGROUP_ID_Z); + case Intrinsic::amdgcn_lds_kernel_id: + return legalizePreloadedArgIntrin(MI, MRI, B, + AMDGPUFunctionArgInfo::LDS_KERNEL_ID); case Intrinsic::amdgcn_dispatch_ptr: return legalizePreloadedArgIntrin(MI, MRI, B, AMDGPUFunctionArgInfo::DISPATCH_PTR); |